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Meat alternative
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A meat alternative or meat substitute (also called plant-based meat, mock meat, or alternative protein),[1] is a food product made from vegetarian or vegan ingredients, eaten as a replacement for meat. Meat alternatives typically aim to replicate qualities of whatever type of meat they replace, such as mouthfeel, flavor, and appearance.[2][3][4][5][6][7] Plant- and fungus-based substitutes are frequently made with soy (e.g. tofu, tempeh, and textured vegetable protein), but may also be made from wheat gluten as in seitan, pea protein as in the Beyond Burger, or mycoprotein as in Quorn.[8] Alternative protein foods can also be made by precision fermentation, where single cell organisms such as yeast produce specific proteins using a carbon source; or can be grown by culturing animal cells outside an animal, based on tissue engineering techniques.[9] The ingredients of meat alternative include 50–80% water, 10–25% textured vegetable proteins, 4–20% non-textured proteins, 0–15% fat and oil, 3-10% flavors/spices, 1–5% binding agents and 0–0.5% coloring agents.[10]
Meatless tissue engineering involves the cultivation of stem cells on natural or synthetic scaffolds to create meat-like products.[11] Scaffolds can be made from various materials, including plant-derived biomaterials, synthetic polymers, animal-based proteins, and self-assembling polypeptides.[12] It is these 3D scaffold-based methods provide a specialized structural environment for cellular growth.[13][14] Alternatively, scaffold-free methods promote cell aggregation, allowing cells to self-organize into tissue-like structures.[15]
Meat alternatives are typically consumed as a source of dietary protein by vegetarians, vegans, and people following religious and cultural dietary laws. However, global demand for sustainable diets has also increased their popularity among non-vegetarians and flexitarians seeking to reduce the environmental impact of animal agriculture.
Meat substitution has a long history. Tofu was invented in China as early as 200 BCE,[16] and in the Middle Ages, chopped nuts and grapes were used as a substitute for mincemeat during Lent.[17] Since the 2010s, startup companies such as Impossible Foods and Beyond Meat have popularized pre-made plant-based substitutes for ground beef, burger patties, and chicken nuggets as commercial products.
History
[edit]



Tofu, a meat alternative made from soybeans, was invented in China during the Han dynasty (206 BC–220 CE).[16] Drawings of tofu production have been discovered in a Han dynasty tomb.[16][18] Its use as a meat alternative is recorded in a document written by Tao Gu (simplified Chinese: 陶谷; traditional Chinese: 陶穀; pinyin: Táo Gǔ, 903–970). Tao describes how tofu was popularly known as "small mutton" (Chinese: 小宰羊; pinyin: xiǎo zǎiyáng), which shows that the Chinese valued tofu as an imitation meat.[16] Tofu was widely consumed during the Tang dynasty (618–907), and likely spread to Japan during the later Tang or early Song dynasty.[16]
In the third century CE, Athenaeus describes a preparation of mock anchovy in his work Deipnosophistae:[19]
He took a female turnip, shred it fine
Into the figure of the delicate fish;
Then did he pour on oil and savoury salt
With careful hand in due proportion.
On that he strew'd twelve grains of poppy seed,
Food which the Scythians love; then boil'd it all.
And when the turnip touch'd the royal lips,
Thus spake the king to the admiring guests:
"A cook is quite as useful as a poet,
And quite as wise, and these anchovies show it."
Wheat gluten has been documented in China since the sixth century.[20] The oldest reference to wheat gluten appears in the Qimin Yaoshu, a Chinese agricultural encyclopedia written by Jia Sixie (Chinese: 賈思勰; pinyin: Jiǎsīxié) in 535.[16] The encyclopedia mentions noodles prepared from wheat gluten called bo duo.[20] Wheat gluten was known as mian jin (Chinese: 麵筋; pinyin: Miànjīn) by the Song dynasty (960–1279).
Before the arrival of Buddhism, northern China was predominantly a meat-consuming culture. The vegetarian dietary laws of Buddhism led to development of meat substitutes as a replacement for the meat-based dishes that the Chinese were no longer able to consume as Buddhists. Meat alternatives such as tofu and wheat gluten are still associated with Buddhist cuisine in China and other parts of East Asia.[21] Meat alternatives were also popular in medieval Europe during Lent, which prohibited the consumption of warm-blooded animals, eggs, and dairy products. Chopped almonds and grapes were used as a substitute for mincemeat. Diced bread was made into imitation cracklings and greaves.[17]
John Harvey Kellogg developed meat replacements variously from nuts, grains, and soy, starting around 1877, to feed patients in his vegetarian Battle Creek Sanitarium.[22] Kellogg's Sanitas Nut Food Company sold his meat substitute Protose, made from peanuts and wheat gluten. It became Kellogg's most popular product as several thousand tons had been consumed by 1930.[22]
There was an increased interest in meat substitutes during the late 19th century and first half of the 20th century.[23] Prior to 1950, interest in plant-based meat substitutes came from vegetarians searching for alternatives to meat protein for ethical reasons, and regular meat-eaters who were confronted with food shortages during World War I and World War II.[23]
Lentils were used at the turn of the century. In 1897, Food, Home and Garden published a positive review of London's vegetarian restaurants, claiming, "For fivepence one could get a lentil cutlet, which was very appetizing, and looked like a meat croquette".[24]
Henrietta Latham Dwight authored a vegetarian cookbook, The Golden Age Cook-Book, in 1898 that included meat substitute recipes such as a "mock chicken" recipe made from breadcrumbs, eggs, lemon juice and walnuts and a "mock clam soup" made from marrowfat beans and cream.[25] Dietitian Sarah Tyson Rorer authored the cookbook Mrs. Rorer's Vegetable Cookery and Meat Substitutes in 1909.[25] The book includes a mock veal roast recipe made from lentils, breadcrumbs and peanuts.[25] In 1943, Kellogg made his first soy-based meat analog, called Soy Protose, which contained 32% soy.[22] In 1945, Mildred Lager commented that soybeans "are the best meat substitute from the vegetable kingdom, they will always be used to a great extent by the vegetarian in place of meat."[26]
In July 2016, Impossible Foods launched the Impossible Burger, a beef substitute which claims to offer appearance, taste and cooking properties similar to meat.[27] In April 2019, Burger King partnered with Impossible Foods to launch the plant-based Impossible Whopper, which was released nationwide later that year,[28] becoming one of the most successful product launches in Burger King's history.[29] By October 2019, restaurants, such as Carl's Jr., Hardee's, A&W, Dunkin' Donuts, and KFC were selling plant-based meat products.[30] Nestlé entered the plant-based burger market in 2019 with the introduction of the "Awesome Burger".[31] Kellogg's Morningstar Farms brand tested its Incogmeato line of plant-based protein products in early September 2019, with plans for a US-wide rollout in early 2020.[32]
Types
[edit]
Some vegetarian meat alternatives are based on centuries-old recipes for seitan (wheat gluten), rice, mushrooms, legumes, tempeh, yam flour or pressed-tofu, with flavoring added to make the finished product taste like chicken, beef, lamb, ham, sausage, seafood, etc. Other alternatives use modified defatted peanut flour, yuba and textured vegetable protein (TVP); yuba and TVP are both soy-based meat alternatives, the former made by layering the thin skin which forms on top of boiled soy milk,[33] and the latter being a dry bulk commodity derived from soy and soy protein concentrate. Some meat alternatives include mycoprotein, such as Quorn which usually uses egg white as a binder. Another type of single cell protein-based meat alternative (which does not use fungi however but rather bacteria[34]) is Calysta.
Production and composition
[edit]
To produce meat alternatives with a meat-like texture, two approaches can be followed: bottom-up and top-down.[35] With bottom-up structuring, individual fibers are made separately and then assembled into larger products. An example of a meat alternative made using a bottom-up strategy is cultured meat. The top-down approach, on the other hand, induces a fibrous structure by deforming the material, resulting in fibrousness on a larger length scale. An example of a top-down technique is food extrusion.
Both bottom-up and top-down processing can be used alone or in combination to offer various benefits. As discussed later, different meat alternative products have varying nutritional values.[36] A notable advantage of the bottom-up approach is its ability to provide precise control over the composition and characteristics of the end product, allowing for optimized nutritional profiles. On the other hand, meat alternatives produced by top-down approaches may have limited malleability but are more scalable and can utilize available agricultural resources and infrastructure effectively.[37] According to a study by Wageningen University & Research titled "Structuring Processes for Meat Analogues," Techniques that follow the bottom-up strategy have the potential to resemble the structure of meat most closely.".[38] A cross-national survey conducted among meat-eaters with varying degrees of meat alternative consumption showed that those who consumed higher quantities of meat were more willing to switch to meat alternatives if they resembled authentic meat more accurately. Which can be accomplished through bottom-up approaches. The study concludes that sensory experience plays a crucial role in utilizing plant-based alternatives for heavy meat eaters.[39]
The types of ingredients that can be used to create meat substitutes is expanding, from companies like Plentify, which are using high-protein bacteria found in the human microbiome,[40] to companies like Meati Foods, that are cultivating the mycelium of fungi—in this case, Neurospora crassa—to form steaks, chicken breasts, or fish.[41][42]
Soy protein isolates or soybean flour and gluten are usually used as foundation for most meat substitutes that are available on the market. Soy protein isolate is a highly pure form of soy protein with a minimum protein content of 90%. The process of extracting the protein from the soybeans starts with the dehulling, or decortication, of the seeds. The seeds are then treated with solvents such as hexane to extract the oil from them. The oil-free soybean meal is then suspended in water and treated with alkali to dissolve the protein while leaving behind the carbohydrates. The alkaline solution is then treated with acidic substances to precipitate the protein, before being washed and dried. The removal of fats and carbohydrates results in a product that has a relatively neutral flavor.[43] Soy protein is also considered a "complete protein" as it contains all of the essential amino acids that are crucial for proper human growth and development.[44]
After the textured base material is obtained, a number of flavorings can be used to give a meaty flavor to the product. The recipe for a basic vegan chicken flavor is known since 1972, exploiting the Maillard reaction to produce aromas from simple chemicals.[45] Later understanding of the source of aroma in cooked meat also found lipid oxidation and thiamine breakdown to be important processes. By using more complex starting materials such as yeast extract (considered a natural flavoring in the EU), hydrolyzed vegetable protein, various fermented foods, and spices, these reactions are also replicated during cooking to produce richer and more convincing meat flavors.[46][47]
Commerce
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This graph was using the legacy Graph extension, which is no longer supported. It needs to be converted to the new Chart extension. |
Meat substitutes represent around 11% of the world's meat and substitutes market in 2020[update]. As shown in the graph, this market share is different from region to region.[48] From 2013 to 2021, the world average price of meat substitutes fell continuously, by an overall 33%. The only exception was a 0.3% increase in 2020, compared to 2019. The price will continue to decrease, according to projections by Statista (see average price graph).[49] Meat substitutes are often priced higher than comparable meat products, but the price can vary depending on product characteristics such as credence attributes or main ingredients.[51]
The motivation for seeking out meat substitutes varies among consumers.[52] The market for meat alternatives is highly dependent on "meat-reducers", who are primarily motivated by health consciousness and weight management. Consumers who identify as vegan, vegetarian or pescetarian are more likely to endorse concerns regarding animal welfare and environmentalism as primary motivators.[53][54] Additionally, some cultural beliefs and religions place prohibitions on consuming some or all animal products, including Hinduism, Judaism, Islam, Christianity, Jainism, and Buddhism.
Vegan meats are consumed in restaurants, grocery stores, bakeries, vegan school meals, and in homes. The sector for plant-based meats grew by 37% in North America over 2017–18.[55] In 2018–19, sales of plant-based meats in the United States were $895 million,[56] with the global market for meat alternatives forecast to be $140 billion by 2029.[57] Seeking a healthy alternative to meat, curiosity, and trends toward veganism were drivers for the meat alternative market in 2019.[58] Sales of plant-based meats increased during the COVID-19 pandemic.[59] The book The End of Animal Farming by Jacy Reese Anthis argues that plant-based food and cultured meat will completely replace animal-based food by 2100.[60]
Impact
[edit]Environmental
[edit]Besides ethical and health motivations, developing better meat alternatives has the potential to reduce the environmental impact of meat production, an important concern given that the global demand for meat products is predicted to increase by 15 percent by 2031. Research on meats and no-meat substitutes suggests that no-meat products can offer substantial benefits over the production of beef, and to a lesser extent pork and chicken, in terms of greenhouse gas production, water and land use.[8] A 2022 report from the Boston Consulting Group found that investment in improving and scaling up the production of meat and dairy alternatives leads to big greenhouse gas reductions compared with other investments.[61]
According to The Good Food Institute, improving efficiency of the Western diet is crucial for achieving sustainability.[62] As the global population grows, the way land is used will be reconsidered. 33% of the habitable land on Earth is used to support animals. Of all the land used for agriculture, 77% is used on animal agriculture even though this sector only supplies 17% of the total food supply. Plant-based meat can use a potential 47–99% less land than conventional meat does, freeing up more opportunities for production. Of the total water used in global agriculture, 33% goes to animal agriculture while it could be used for drinking water or other growing purposes under a different strategy. Plant-based meat uses 72–99% less water than conventional meat production.[62]
Pollution is the next largest contribution to wasted water. Pesticides used in animal feed production as well as waste runoff into reservoirs can cause ecological damage and even human illness as well as taking water directly out of the usable supply. Animal agriculture is the main contributor to the food sector greenhouse gas emissions. Production of plant-based meat alternatives emits 30–90% less than conventional meat production.[63] While also contributing less to this total pollution, much of the land being used for animal feed could be used to mitigate the negative effects we've already had on the planet through carbon recycling, soil conservation, and renewable energy production.[62] In addition to the ecological harm caused by the current industry, excess antibiotics given to animals cause resistant microbes that may render some of the life-saving drugs used in human medicine useless. Plant-based meat requires no antibiotics and would greatly reduce microbe antibiotic resistance.[62]
A 2023 study published in Nature Communications found that replacing just half of the beef, chicken, dairy and pork products consumed by the global population with plant-based alternatives could reduce the amount of land used by agriculture by almost a third, bring deforestation for agriculture nearly to a halt, help restore biodiversity through rewilding the land and reduce GHG emissions from agriculture by 31% in 2050, paving a clearer path to achieving both climate and biodiversity goals.[64][65][66] The switch to plant-based protein is reported to deliver the biggest climate-heating emission cuts per investment dollar of all industrial sectors.[67]
Health
[edit]Meat alternatives have lower amounts of saturated fat, vitamin B12 and zinc than meat products but higher amounts of carbohydrates, dietary fibre, sodium, iron and calcium.[68][69] Meat alternatives are rated as ultra-processed foods under the Nova classification, but when the UK nutritional profiling system is used, not all products classified as ultra-processed are rated as unhealthy.[70]
In 2021, the American Heart Association stated that there is "limited evidence on the short- and long-term health effects" of plant-based meat alternatives.[71] The same year, the World Health Organization stated that there are "significant knowledge gaps in the nutritional composition" of meat alternatives and more research is needed to investigate their health impacts.[72]
A 2023 review concluded that replacing red and highly-processed meat with a variety of meat alternatives improved quality-adjusted life years, led to significant health system savings and reduced greenhouse gas emissions; replacement of meat with minimally-processed vegetarian alternatives, such as legumes had the greatest effect.[73] Another review found that meat alternatives are likely to be healthier than meat products and more environmentally friendly but are more expensive.[74]
A 2024 review found that plant-based meat alternatives have the potential to be healthier than animal source foods and have smaller environmental footprints.[75]
A comprehensive study published in the journal Proceedings of the National Academy of Sciences in 2024 shows that processed plant-based substitutes such as veggie burgers improve nutrition compared to animal products, but less than unprocessed plant-based foods; they offer significant health benefits over meat, but are not as nutritious and balanced as unprocessed alternatives.[76]
Criticism
[edit]Dietitians have claimed foods made by companies like Beyond Meat are not necessarily healthier than meat due to their highly processed nature and sodium content.[77][78] However, among ultra-processed foods, consumption of the "plant-based alternatives" subcategory is associated with decreased risks of cardiometabolic diseases.[79]
John Mackey, co-founder and CEO of Whole Foods, and Brian Niccol, CEO of Chipotle Mexican Grill, have criticized meat alternatives as ultra-processed foods. Chipotle has claimed it will not carry these products at their restaurants due to their highly processed nature. CNBC wrote in 2019 of Chipotle joining "the likes of Taco Bell ... and Arby's in committing to excluding meatless meats on its menu."[80] In response, Beyond Meat invited Niccol to visit its manufacturing site to see the production process.[80] Chipotle later developed its own "plant-based chorizo".[81][82] In September 2022, Taco Bell also began adding plant-based meat alternatives to its menu.[83]
Some consulting firms and analysts demand more transparency in terms of the environmental impact of plant-based meat.[84] Through a survey, analysts from Deloitte discovered that some consumers negatively linked meat alternatives to being "woke" and politically-left leaning.[85] These ideas emerged in response to Cracker Barrel's introduction of Impossible Sausages in their restaurants in August, 2022.[86] In 2021, 68% of consumers who purchased plant based meats believed it was healthier than animal meat. The number dropping to 60% in 2022, demonstrating a decline in consumers beliefs in the healthiness of these meats.[85]
Some states have instituted legislation stating that meat alternatives are not allowed to label themselves as "meat". In Louisiana, the so-called, "Truth in Labeling of Food Products Act" was challenged by Tofurky, complaining of free speech violations[87] and was successful on those grounds.[88]
Alternative meats companies Beyond Meat and Impossible Foods have attempted to appeal to meat eaters. University of Oregon marketing professor Steffen Jahn thinks that this has run afoul of human psychology, saying "the mimicking of real meat introduces that comparison of authenticity."[59] Jahn argues that marketing plant-based meats with traditional meats leads to an artificiality that many consumers do not love. Consumer psychologists split foods into categories of "virtue" and "vice" foods, which ultimately guide how products are marketed and sold. Virtue foods are those that less gratifying appealing in the short term, and typically healthier, whereas vice foods are the opposite, having more long term consequences.[89] Many ready-made meat alternatives combine these categories with their long list of ingredients. Consumers who are likely to want to be "virtuous" by avoiding damage to the environment or animals are also likely to want "virtuous" food in the form of simple ingredients.[59]
See also
[edit]- Vegetarian bacon
- Vegetarian hot dogs
- Vegetarian sausage
- Meat-free sausage roll
- Soy curls – Soy-based meat alternative
- Cultured meat – Animal flesh produced by culturing cells
- Egg substitutes – Food products which can be used to replace eggs in cooking and baking
- Insects as food – Use of insects as food for humans
- List of bacon substitutes
- List of meat substitutes
- List of vegetarian and vegan companies
- Leghemoglobin: alters flavor of certain meat alternatives to make them taste even more similar to meat ("simulates" animal blood in these meat alternatives but made from plant-based sources)
- Milk substitute – Alternative substance that resembles milk
- Single-cell protein, meat alternatives containing protein extract from pure or mixed cultures of algae, yeasts, fungi, or bacteria or made from air
- Timeline of cellular agriculture
References
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all types of meat-like products that approximate certain aesthetic qualities (primarily texture, flavor, and appearance) or chemical characteristics of a specific meat. (...) includes plant-based meat and vegetarian meat [which] contains non-vegan ingredients
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Further reading
[edit]- Yes, plant-based meat is better for the planet. Vox. 18 November 2021.
- Plant-based meat is a simple solution to climate woes – if more people would eat it. Associated Press. 1 December 2023.
Meat alternative
View on GrokipediaMeat alternatives are processed food products formulated to mimic the sensory attributes—such as taste, texture, and appearance—of meat derived from animals, primarily through the use of plant-sourced proteins including soy, peas, wheat gluten, and legumes, often combined with fats, binders, flavor enhancers, and colorants to achieve organoleptic similarity.[1] These substitutes encompass a range of formats from ground meat analogs to whole cuts, with historical precedents in ancient Asian innovations like tofu and tempeh dating back over a millennium, though contemporary Western developments accelerated in the mid-20th century with textured vegetable proteins and escalated in the 2010s via extrusion technologies enabling closer replication of fibrous muscle structure.[2] Despite marketed for environmental sustainability—evidenced by meta-analyses showing plant-based variants typically emitting 50% fewer greenhouse gases than beef equivalents—and health advantages like reduced saturated fat and cholesterol, nutritional comparisons reveal shortcomings including inferior protein digestibility, elevated sodium content, and reliance on additives, with metabolomic profiles differing substantially from grass-fed meat despite comparable labeling.[3][4][5] Market growth, which surged post-2019 with companies like Beyond Meat achieving high valuations, has decelerated sharply, with U.S. retail sales dropping 7.5% year-over-year through mid-2025 amid consumer reports of suboptimal taste and texture, pricing premiums, and doubts over long-term viability, while global projections anticipate modest annual expansion to $11.34 billion by year's end.[6][7] Emerging categories like mycelium-based and cultivated cell meats promise further innovation but face scalability barriers and higher production costs, underscoring that while technological feats have broadened accessibility, causal factors such as entrenched dietary preferences and incomplete substitution for meat's nutritional completeness limit widespread displacement of livestock products.[8][9]
History
Pre-20th century origins
The development of meat alternatives in pre-20th century Asia stemmed primarily from religious imperatives within Buddhism, which prohibited the consumption of animal flesh to avoid harm to sentient beings and promote compassion. Chinese Buddhist monks innovated plant-based substitutes to replicate the texture and nutritional role of meat, using available staples like soybeans and wheat. This first-principles approach addressed protein scarcity in vegetarian diets through empirical trial, fermenting or coagulating plant proteins into firm, versatile forms suitable for cooking.[10][11] Tofu, a coagulated soy milk product, represents one of the earliest documented meat substitutes, with traditions attributing its invention to the Han Dynasty around 206 BCE–9 CE, though the first textual reference appears in 965 AD in the Chinese document Ch'ing I Lu. Produced by curdling soy milk with a coagulant like nigari, tofu provided a neutral, absorbent base that could be seasoned to mimic various meats, fulfilling dietary needs during monastic vegetarianism. Similarly, wheat gluten, known as miàn jīn, emerged in China by the 6th century AD, created by washing dough to isolate elastic protein strands, which were then flavored and shaped into meat-like preparations for Buddhist cuisine.[12][13][14] In Indonesia, tempeh arose as a fermented soybean cake, likely originating in Central Java before 1800, possibly as early as the 16th century, through natural Rhizopus mold fermentation that bound beans into a solid, nutritious patty. While not exclusively tied to Buddhism, tempeh served as a practical protein source in resource-limited tropical environments, offering a chewy texture akin to meat without reliance on animal husbandry. These innovations persisted through manual processes, driven by necessity rather than industrialization.[15] European precedents were less focused on textural mimicry and more on caloric substitution during religious fasts like Lent, where warm-blooded meats were forbidden from the Middle Ages onward. Communities relied on legumes, nuts, and grains—such as pea porridges or almond pastes—but lacked the protein isolation techniques of Asia, often supplementing with permitted fish or dairy amid scarcity from famines or sieges.[16]20th century advancements
In the mid-1960s, the British company Rank Hovis McDougall (RHM) initiated research into fungal protein production to address anticipated global protein shortages, selecting the fungus Fusarium venenatum strain A3/5 for its rapid growth and high protein yield via continuous fermentation processes.[17][18] This mycoprotein precursor demonstrated efficient conversion of carbohydrates into biomass with a protein content exceeding 45% on a dry basis, offering a scalable alternative to animal-derived proteins through controlled aerobic cultivation.[19] The approach emphasized food science principles, such as optimizing shear and temperature in fermenters to mimic meat's fibrous texture, independent of later ideological drivers.[20] Parallel advancements occurred in soy-based textured vegetable protein (TVP), invented via extrusion by Archer Daniels Midland in the 1960s, which applied high shear and heat to defatted soy flour to create fibrous, rehydratable structures nutritionally comparable to ground meat, with protein levels around 50%.[21] This technology enabled low-cost production for applications including space food evaluation by NASA, where TVP's stability and compactness were tested for long-duration missions, and famine relief efforts.[22] Extrusion parameters, such as temperatures of 140–180°C and moisture contents of 20–30%, were refined to enhance digestibility and reduce anti-nutritional factors like trypsin inhibitors in soy, facilitating broader adoption in fortified foods.[23] By the 1970s, early extruded plant proteins, predominantly soy isolates, underwent field trials in developing nations to assess nutritional equivalence to animal proteins, with studies showing protein efficiency ratios approaching 2.0–2.5 when supplemented with limiting amino acids like methionine.[24] These efforts, often supported by international agencies, prioritized causal factors like improved protein structuring for better bioavailability over palatability alone, though challenges in sensory acceptance persisted due to beany flavors from residual lipoxygenase activity.[25] Such developments underscored extrusion's role in industrial scalability, yielding products with meat-like water-holding capacities exceeding 300% upon rehydration.[26]Modern commercialization (2000s–2010s)
In the 2000s and 2010s, meat alternatives transitioned from marginal products to investor-driven ventures focused on engineering sensory replication of animal meat through protein extrusion, flavor compounds, and structural analogs, supported by rising patent activity in plant-based formulations. Beyond Meat, founded in 2009 by Ethan Brown, pioneered pea protein-based patties designed to mimic beef's chewiness and juiciness, launching the Beyond Burger in May 2016 as its first major retail product.[27] The company's approach emphasized simple plant ingredients to achieve meat-like cooking behavior, drawing early funding from investors including Bill Gates to scale production.[28] Impossible Foods, established in July 2011 by biochemist Patrick O. Brown, advanced this trend with the Impossible Burger, debuted in July 2016 at select restaurants, incorporating genetically engineered soy leghemoglobin to produce heme that enables a bleeding effect, sizzle, and umami akin to cooked beef.[29] [30] The U.S. Food and Drug Administration granted a no-objection letter in July 2018 for the ingredient's safety in ground beef analogs, followed by full approval as a color additive in July 2019 after petition review, clearing hurdles for uncooked retail sales.[31] [32] Venture capital inflows accelerated commercialization, with U.S. plant-based meat startups securing approximately $2.7 billion from 2010 to early 2020, much of it concentrated in the late 2010s to fund facilities and distribution.[33] Partnerships with fast-food giants exemplified scaling; McDonald's tested a plant-based burger using Beyond Meat patties in 28 Canadian locations starting September 30, 2019, marking a push into high-volume channels.[34] Marketing evolved from niche appeals to vegetarians and health seekers toward mainstream narratives of sustainability, highlighting reduced land and water use compared to livestock, which broadened consumer adoption beyond ethical or dietary niches.[35] This reframing, evident in product launches and investor pitches, aligned with growing public concern over meat production's environmental footprint, facilitating shelf space in major grocers like Walmart and Kroger by the decade's end.[36]Recent developments (2020s)
In the United States, retail sales of plant-based meat alternatives peaked around 2019–2020 before entering a sustained decline amid cooling consumer demand and economic pressures. Dollar sales fell 7.5% to $1.13 billion for the 52 weeks ending April 20, 2025, while unit sales dropped 10%, per SPINS market tracking data.[6] This followed earlier contractions, with 2024 seeing a 7% dollar sales decrease and 11% unit sales drop for plant-based meat and seafood categories.[37] Such trends reflected broader category challenges, including price sensitivity and competition from conventional proteins, contrasting with pre-2020 growth narratives from industry advocates.[38] Manufacturers responded by emphasizing hybrid formulations that blend plant-based components with animal-derived meat to enhance appeal and affordability. These products, which combine varying ratios of plant proteins with conventional meat for improved texture and nutrition, saw rising adoption; the global hybrid meat market valued $2.5 billion in recent estimates, with a projected 10% compound annual growth rate through the mid-2030s.[39] Examples include blends displacing portions of meat with plant ingredients to optimize flavor and cost, as explored by firms like Impossible Foods.[40] This pivot aimed to address pure plant-based limitations without fully abandoning animal proteins. Cultured meat advanced regulatorily but faced persistent scalability hurdles. The US Food and Drug Administration issued "no questions" letters for chicken cell lines from Upside Foods in November 2022 and Good Meat in March 2023, affirming safety data; the USDA followed with production and labeling approvals in June 2023, enabling limited restaurant sales in select states.[41] [42] Despite these milestones, high production costs—estimated at $63 per kilogram in 2025 analyses—continued to limit commercial viability, far exceeding conventional meat prices due to bioreactor expenses and media requirements.[43] Innovations like cost reductions to €7 per kilogram at scale by firms such as Gourmey offered promise but did not yet resolve economic barriers for mass-market entry.[44]Types
Plant-based alternatives
Plant-based meat alternatives are formulated from proteins derived from plants such as soy, peas, wheat, and rice to replicate the appearance, texture, flavor, and mouthfeel of animal-derived meat, without incorporating animal cells or employing cellular cultivation methods.[45] These products dominate the meat substitute category, with the global plant-based meat market valued at USD 7.17 billion in 2023, far outpacing other emerging types like cultivated meat, which remain in early pilot stages with negligible commercial sales.[46] Soy protein, often in the form of soy protein concentrate or textured vegetable protein, has historically been a primary ingredient due to its functional properties and availability; for instance, the Impossible Burger relies on soy protein as its main protein source.[47][48] Pea protein isolate has gained prominence in recent formulations for its neutral flavor and high protein content, serving as the core protein in Beyond Meat's burger patties alongside rice and lentil proteins.[49] Wheat gluten, known for its elasticity, is commonly blended with other proteins to enhance binding and chewiness in products like seitan-based analogs.[50] To mimic the fibrous texture of muscle meat, plant proteins are processed using techniques such as high-moisture extrusion, which applies shear and heat to align protein molecules into anisotropic, string-like structures.[51] This method, distinct from dry extrusion used for rehydratable chunks, enables the production of juicy, shreddable mimics suitable for burgers, sausages, and pulled pork alternatives.[52] Common commercial examples include pea- and soy-based patties, ground crumbles, and links, which together account for the bulk of plant-based offerings on the market.[53]Fermentation-derived proteins
Fermentation-derived proteins encompass microbial processes that produce protein-rich biomass or targeted molecules for use in meat alternatives, distinct from direct plant extraction or animal cell cultivation. Biomass fermentation involves cultivating fungi or bacteria in large-scale bioreactors to generate whole-cell protein matrices, yielding products with inherent fibrous textures that mimic meat's structure.[54] A prominent example is mycoprotein, derived from the fungus Fusarium venenatum through continuous submerged fermentation using glucose or starch feedstocks, followed by harvesting, heat treatment to kill cells, and mechanical processing to align hyphal filaments for texture.[55][56] Commercialized by Quorn Foods since the 1980s, mycoprotein contains approximately 45-50% protein by dry weight, along with chitin for mouthfeel and beta-glucans for potential health benefits, and is incorporated into products like patties and nuggets.[57] Precision fermentation, by contrast, employs genetically engineered microorganisms—such as yeast or bacteria—to biosynthesize specific animal-like proteins, enabling precise replication of functional attributes like flavor or binding.[58] For instance, soy leghemoglobin (heme), produced via engineered Pichia pastoris yeast, imparts a meaty "bleeding" effect and umami taste in plant-hybrid burgers, as utilized by Impossible Foods since 2016.[59] Other applications include casein or whey mimics for dairy analogs adaptable to meat formulations, and emerging proteins like collagen or myoglobin analogs to enhance gelation and marbling in alt-meats.[60][61] These processes occur in controlled fermenters at scales up to thousands of liters, with downstream purification via centrifugation and filtration, though they demand significant energy for aeration, temperature control, and sterility.[58] While fermentation-derived proteins constitute a growing but minor segment of the alternative protein market—estimated at under 5% of commercial meat substitutes as of 2023 due to scaling hurdles—their modularity supports hybrid applications, blending with plant bases for improved sensory profiles.[62] Scalability relies on bioreactor advancements, yet high capital costs and feedstock dependencies limit widespread adoption compared to plant extrusion methods.[54] Regulatory approvals, such as FDA clearance for heme in 2019, have facilitated market entry, though allergenicity from fungal sources and novel protein safety remain under scrutiny in peer-reviewed assessments.[60][57]Cultured or cell-based meat
Cultured meat, also termed cell-based or cultivated meat, is produced by extracting stem cells—typically muscle satellite cells—from a living animal via a small biopsy and expanding them in vitro to form muscle, fat, and connective tissues that replicate the composition of conventional meat.[63] These cells proliferate in bioreactors, large vessels providing a sterile, temperature-controlled environment with nutrient media containing amino acids, vitamins, sugars, and growth factors to sustain division and differentiation without the animal host.[64] Unlike plant-based substitutes, this method yields tissue with identical cellular and molecular profiles to animal-derived meat, including myofibrils and animal-specific proteins like myoglobin, ensuring biological equivalence in structure and function.[65] Scaffolding techniques enhance structural fidelity by offering a three-dimensional matrix for cell attachment and organization, mimicking the extracellular framework of natural muscle where fibers align to produce texture and chewiness.[66] Edible scaffolds, often derived from collagen or plant polysaccharides, support multilayered tissue growth up to several millimeters thick, addressing limitations of two-dimensional cultures that fail to replicate meat's hierarchical architecture.[67] Cell differentiation into mature meat components occurs under controlled conditions, such as mechanical tension or biochemical signals, yielding products genetically and biochemically indistinguishable from slaughtered meat.[68] The first U.S. regulatory milestone came on November 16, 2022, when the FDA completed its pre-market consultation for Upside Foods' cell-cultivated chicken, confirming safety in cell sourcing, media, and final product.[69] This was followed by USDA approval on June 21, 2023, enabling limited commercial sales of chicken produced from animal stem cells.[70] As it derives directly from animal cells harboring the source organism's DNA and proteome, cultured meat does not qualify as vegan, distinguishing it from non-animal proxies despite shared goals of reducing livestock reliance.[71] Projections indicate the global cultured meat market could expand to $6.9 billion by 2030 from $246.9 million in 2022, contingent on bioreactor scaling and media cost reductions to approach parity with conventional meat pricing.[72] Achieving broader adoption requires overcoming proliferation yields currently limited to grams per liter in pilot systems, though advances in perfusion bioreactors show potential for kilogram-scale outputs.[73]Other emerging types
Insect-based alternatives, such as cricket (Acheta domesticus) flour incorporated into patties, offer high protein content and have been tested as partial meat replacers, with up to 10% substitution in beef patties yielding viable texture and reduced cooking loss.[74] [75] These products leverage insects' nutritional density, including essential amino acids and micronutrients like zinc and iron, but empirical sensory trials show limited viability for direct human consumption due to off-flavors and visual aversion.[76] While sustainability analyses highlight lower resource demands compared to livestock—requiring 10 times less feed for equivalent protein—insect proteins exhibit less than 1% market penetration globally, constrained by regulatory hurdles and cultural resistance in major markets.[77] [78] Algal proteins derived from microalgae, such as Chlorella or Spirulina, are emerging for meat analogs owing to their complete amino acid profiles and rapid biomass growth, enabling up to 50% protein yields under controlled cultivation.[79] Studies position them as sustainable options with 90% lower land use than soy, though processing challenges like bitter tastes and fibrous textures necessitate blending with binders for analog formation.[80] Human acceptability remains niche, with pilot integrations into burgers showing nutritional enhancements but insufficient sensory appeal for broad substitution, mirroring low adoption rates akin to insects.[81] 3D-printed hybrids merge these sources—e.g., insect or algal matrices with plant scaffolds—to engineer fibrous structures mimicking muscle, as demonstrated in extrusion-based prototypes achieving 80% shape fidelity post-printing.[82] Viability trials confirm potential for customized nutrition delivery, with algal-ink prints retaining bioactive compounds better than traditional molding.[83] Despite academic emphasis on scalability for sustainability—projecting 75% greenhouse gas reductions versus beef—consumer panels report persistent "yuck factor" barriers, limiting these to speculative rather than commercial scales with negligible current market share.[78] [84]Production and composition
Key ingredients and sourcing
Soy protein isolates and concentrates, derived from defatted soybeans, serve as primary protein sources in many meat alternatives due to their high solubility and emulsification properties. These are predominantly sourced from monoculture soybean farms in Brazil and Argentina, which together account for over 80% of global exports; Brazil's production reached 169 million metric tons in the 2024/25 season, with significant expansion linked to deforestation of over 794,000 hectares in supply chain-associated areas from 2020 to recent years.[85][86] Pea protein isolates, favored for allergen-free profiles and neutral flavor, originate mainly from field peas grown in Canada, the United States, and Europe, where the plant-based sector's demand is projected to consume up to 34% of global pea production by 2030, heightening reliance on yield stability amid variable weather patterns.[87] Wheat gluten, extracted from wheat flour via wet milling, provides elastic texture and is sourced from major grain belts in the U.S., EU, and Australia, often as a complementary binder in soy-pea blends.[48] Lipids for fat mimicry, essential for juiciness and marbling effects, commonly include coconut oil, palm oil, and soybean oil, selected for their saturation levels that yield semi-solid states at room temperature. Coconut oil, prevalent in products like burgers, is harvested from tropical plantations in Indonesia and the Philippines, while palm oil draws from Southeast Asian estates prone to habitat conversion pressures.[50][48] Binders such as methylcellulose, a chemically modified cellulose ether from wood pulp or cotton linters, enable gelation and moisture retention during extrusion; it is industrially produced via alkali treatment and etherification processes.[50] Flavor additives, including yeast extracts from autolyzed Saccharomyces cerevisiae, are manufactured through industrial fermentation and hydrolysis to deliver umami via glutamates and nucleotides, masking beany off-notes from legume proteins.[88] These ingredients predominantly derive from large-scale agricultural monocultures, rendering supply chains susceptible to disruptions from droughts, pests, and geopolitical factors, as evidenced by soy yield volatility in South America during recent La Niña events.[89] For fermentation-derived alternatives, proteins like precision-fermented heme rely on microbial cultures fed glucose from corn or sugarcane, tying back to similar crop dependencies.[90] Cultured meat production sources animal stem cells initially from biopsies but scales via nutrient media with plant-derived amino acids and sugars, amplifying agricultural inputs.[91]Manufacturing processes
High-moisture extrusion (HME) represents the dominant engineering technique for fabricating fibrous textures in plant-based meat alternatives, enabling the alignment of plant proteins into anisotropic structures that mimic muscle fibers. In this process, a hydrated protein matrix—typically comprising soy, pea, or wheat isolates with moisture levels exceeding 50%—is processed through a twin-screw extruder under controlled conditions of high temperature (140–180°C), pressure (up to 10 MPa), and shear rates (200–1000 s⁻¹), followed by rapid cooling to induce protein denaturation and fiber formation.[92][93] This thermomechanical treatment disrupts protein aggregates, promotes cross-linking via disulfide bonds and hydrogen interactions, and yields products with directional tensile strength comparable to animal meat, as patented in early food science applications for textured vegetable proteins.[94][95] To replicate juiciness and marbling, emulsification techniques are integrated, wherein lipid phases (e.g., plant oils or structured fats) are stabilized within the protein matrix using high-shear mixing or co-extrusion, preventing phase separation during cooking and enhancing moisture retention through interfacial tension control.[96] These methods, often rooted in patents for fat analogs, involve homogenizers operating at 10,000–20,000 rpm to form stable emulsions with droplet sizes below 10 μm, improving sensory attributes like succulence without compromising shelf-stability via added stabilizers such as methylcellulose.[97] Shelf-life extension further relies on post-extrusion steps like pasteurization (at 72–85°C for 15–30 seconds) and packaging under modified atmospheres to inhibit microbial growth, achieving refrigerated stability of 7–21 days.[98] Commercial scaling transitions these lab-scale processes to continuous production lines, as exemplified by Beyond Meat's expansion to a 90,000-square-foot facility in Columbia, Missouri, by 2019, where multiple extrusion units produce woven protein fibers at rates exceeding 10 tons per day through automated dough preparation, extrusion, and cutting.[99][100] Energy demands in extrusion dominate manufacturing, with specific consumption of 200–400 kWh per ton due to heating elements, screw drives, and cooling systems—levels akin to extruded snacks or cereals but elevated relative to raw meat handling, which avoids such intensive structuring.[96][101]Nutritional profile
Plant-based meat alternatives generally provide 15–25 grams of protein per standard serving (e.g., a 113-gram patty), approaching the protein density of lean beef (around 22 grams per similar serving) but often with incomplete amino acid profiles reliant on combinations of pea, soy, or wheat proteins.[102] [53] These products derive protein from plant sources, which can exhibit lower digestibility compared to animal proteins due to factors like anti-nutritional compounds such as trypsin inhibitors.[103] They typically contain 2–5 grams of dietary fiber per serving from ingredients like legumes and vegetables, a nutrient absent in unprocessed animal meats, alongside lower saturated fat (often under 5 grams per serving) but higher carbohydrates and added sugars in some formulations. Sodium levels are commonly elevated for flavor and texture, averaging 400–500 milligrams per serving—substantially higher than in unseasoned beef (around 70 milligrams).[104] [105] Micronutrient profiles show total iron content often comparable to or exceeding beef (e.g., 20–25% daily value per serving in fortified products), yet bioavailability is reduced because plant-based iron is predominantly non-heme, with absorption hindered by phytates and oxalates, unlike the highly absorbable heme iron in meat. Zinc follows a similar pattern: higher total amounts in many alternatives (e.g., from legumes) but lower fractional absorption (estimated 15–25% vs. 30–40% from meat) due to similar inhibitors.[106] [107] [4] Vitamin B12, absent in plant-derived foods without fortification, is added to many commercial meat alternatives (e.g., 100–250% daily value per serving via cyanocobalamin), but absorption rates decline with dose—approximately 50% for low microgram amounts but dropping to under 1% for milligram levels—potentially limiting efficacy compared to natural B12 in animal products.[108] [109] Untargeted metabolomics analysis of a popular plant-based burger versus grass-fed ground beef, despite aligned Nutrition Facts panels for macros, identified a 90% difference in metabolite abundances, encompassing amino acids, lipids, and bioactive compounds with implications for nuanced nutritional value.[4]Health effects
Claimed benefits and supporting evidence
Proponents of meat alternatives claim they offer health advantages over animal-derived meat primarily due to reduced saturated fat content and absence of dietary cholesterol, which may contribute to improved lipid profiles when substituted in diets.[110] Plant-based meat alternatives (PBMAs) typically contain lower levels of saturated fats—often sourced from coconut or palm oils in processed forms—compared to beef or pork, potentially mitigating elevations in low-density lipoprotein (LDL) cholesterol associated with high animal fat intake.[111] A randomized crossover trial, the SWAP-MEAT study involving 36 healthy adults, found that replacing animal meats with PBMAs for eight weeks led to a statistically significant reduction in LDL cholesterol by approximately 10 mg/dL, alongside decreases in trimethylamine N-oxide (TMAO) and body weight, though these changes were modest and reversed upon returning to animal meat consumption.[112] [113] Systematic reviews and meta-analyses of short-term substitution trials support potential cardiovascular benefits, including lowered total cholesterol (by 6%) and LDL cholesterol (by 12%) in adults without preexisting cardiovascular disease when PBMAs replace meat for up to eight weeks.[114] [115] These effects are attributed to fiber content in PBMAs, which binds bile acids and promotes cholesterol excretion, a mechanism absent in animal meats.[116] However, such reviews aggregate data from small-scale interventions (often n<50) with limited duration, precluding assessment of long-term outcomes like actual cardiovascular event rates, and many studies rely on self-reported adherence or industry-funded products, introducing potential confounding.[117] No large-scale, long-term randomized controlled trials demonstrate sustained reductions in cardiovascular disease incidence specifically from PBMAs. Claims of anti-inflammatory effects stem from plant-derived components like polyphenols and fiber in unprocessed alternatives, which broader plant-based diet research links to reduced C-reactive protein levels.[118] Yet, evidence specific to processed meat alternatives is sparse and inconclusive; one analysis of substitution trials found no differential impact on inflammatory biomarkers compared to animal meats, suggesting any benefits may derive from overall dietary shifts rather than PBMAs uniquely.[117] [119] These findings underscore that while substitution can yield surrogate marker improvements in controlled settings, causal links to clinical health outcomes remain tentative without robust, extended-duration data.Risks, deficiencies, and counter-evidence
Many plant-based meat alternatives are classified as ultra-processed foods due to extensive formulation with isolates, additives, and emulsifiers, which observational studies link to elevated risks of obesity, cardiometabolic diseases, and all-cause mortality.[120] [121] A 2025 review indicated that while such products may yield marginally better short-term cardiometabolic outcomes than unprocessed animal meats, they remain inferior to minimally processed whole plant foods in preserving health benefits like reduced inflammation and sustained nutrient density.[122] These alternatives often contain elevated sodium levels, frequently exceeding 1 g per 100 g serving, comparable to or higher than processed meats, contributing to hypertension risk through mechanisms like fluid retention and vascular stiffness.[123] [124] Products such as certain burger patties have been noted for sodium contents up to 2 g per 100 g in cold-cut varieties, potentially exacerbating blood pressure elevation in sodium-sensitive populations despite any fiber additions.[123] [111] Nutritionally, plant-based meat substitutes typically provide lower bioavailable levels of calcium, potassium, vitamin B12, iron, and zinc compared to animal-derived meats or fortified whole foods, with protein quality diminished by anti-nutritional factors like phytates in legume bases.[111] [125] Diets relying on these products show deficiencies in these micronutrients, particularly B12, which requires supplementation to avoid neurological risks, as plant sources inherently lack it.[126] [127] Long-term health impacts remain understudied, with most trials limited to 8 weeks or less, revealing short-term LDL-cholesterol reductions but no data on chronic outcomes like cancer incidence or sustained metabolic shifts.[128] [129] A 2024 systematic review highlighted that substituting meats with these alternatives does not replicate the mortality risk reductions seen with unprocessed plant foods, underscoring potential overreliance on processing to mimic texture at the expense of holistic dietary quality.[111] Countering claims of broad superiority, intervention studies demonstrate that plant-based meat alternatives fail to outperform whole plant foods in cardiometabolic markers, with processing potentially negating fiber benefits through reduced digestibility and microbiome diversity alterations.[122] [121] While some microbiome analyses report increased butyrate production from occasional use, habitual consumption may disrupt bacterial profiles less favorably than unprocessed plants, lacking the prebiotic synergies of intact fibers.[130]Environmental assessments
Lifecycle analysis metrics
Lifecycle analysis (LCA) metrics for meat alternatives quantify environmental impacts across stages from raw material extraction to processing and distribution, often using cradle-to-gate boundaries. Key indicators include greenhouse gas (GHG) emissions, measured in kg CO₂ equivalents (CO₂e) per kg of product; land use in square meters (m²) per kg; freshwater consumption in liters per kg; and eutrophication potential in grams of phosphate equivalents (PO₄e) per kg, reflecting nutrient pollution from fertilizers and runoff. These metrics derive from peer-reviewed LCAs, which emphasize empirical data from supply chains, though results vary with ingredient sourcing, such as soy or pea protein origins, and manufacturing energy intensity.[131][3] For plant-based meat analogues, GHG emissions typically range from 0.5 to 2.4 kg CO₂e per kg product, with a median of 1.7 kg CO₂e/kg across reviewed studies up to 2021; averages for processed variants hover around 2.2 kg CO₂e/kg.[131][3] Cultivation of protein-rich ingredients like soy accounts for a substantial portion, while extrusion and other processing steps add 20-50% more emissions due to energy use.[131] Land use averages 1.6-3.7 m² per kg for processed products, driven by crop yields; isolates from peas or soy can elevate this to 5-35 m²/kg if low-yield sourcing prevails.[3] Freshwater use varies widely, from 450 L/kg in soy-based alternatives to over 1,000 L/kg in irrigated or imported ingredient scenarios.[132][3]| Metric | Typical Range/Average for Plant-Based Analogues | Key Influencing Factors |
|---|---|---|
| GHG Emissions (kg CO₂e/kg) | 0.5–2.4 (median 1.7); avg. ~2.2 processed | Ingredient cultivation, processing energy |
| Land Use (m²/kg) | 1.6–3.7; up to 35 for isolates | Crop yields, sourcing region |
| Freshwater Use (L/kg) | 450–2,000+ | Irrigation, supply chain distance |
| Eutrophication (g PO₄e/kg) | ~12 (soy-based examples) | Fertilizer application in soy/legume farming |
Direct comparisons to animal-derived meat
Plant-based meat alternatives typically demonstrate lower greenhouse gas (GHG) emissions in lifecycle assessments compared to most animal-derived meats, though margins vary by animal type and production system. A 2024 comparative lifecycle analysis of U.S. production systems found average GHG emissions for plant-based meats at 0.75–0.98 kg CO₂e per kg, contrasted with 27.2 kg CO₂e/kg for beef, 7.2 kg CO₂e/kg for pork, and 4.6 kg CO₂e/kg for chicken, yielding overall reductions of 89%, with 91% versus beef, 88% versus pork, and 71% versus chicken.[135] A review of multiple studies reported median PBMA emissions at 1.7 kg CO₂e/kg (range: 0.5–2.4 kg), generally below pork (4–11 kg CO₂e/kg) and chicken (2–6 kg CO₂e/kg) medians but with potential overlap at the lower ends for poultry.[131][136]| Metric | Plant-Based Meat (kg CO₂e/kg) | Beef (kg CO₂e/kg) | Pork (kg CO₂e/kg) | Chicken (kg CO₂e/kg) |
|---|---|---|---|---|
| GHG Emissions | 0.75–0.98 (avg.)[135] | 27.2[135] | 7.2[135] | 4.6[135] |
| Median/Review | 1.7 (median)[131] | 9–120[136] | 4–11[136] | 2–6[136] |