World Library  
Flag as Inappropriate
Email this Article

In vitro meat

Article Id: WHEBN0000511626
Reproduction Date:

Title: In vitro meat  
Author: World Heritage Encyclopedia
Language: English
Subject: Meat, New Harvest, Tissue engineering, Exploratory engineering, 3D printing
Collection: Animal Rights, Emerging Technologies, Meat, Meat Substitutes, Sustainable Food System, Vegetarianism
Publisher: World Heritage Encyclopedia
Publication
Date:
 

In vitro meat

In vitro meat, also called victimless meat, cultured meat, tubesteak, cruelty-free meat, shmeat, and test-tube meat, is an animal-flesh product that has never been part of a living animal with exception of the fetal calf serum taken from a slaughtered cow. In the 21st century, several research projects have worked on in vitro meat in the laboratory.[1] The first in vitro beefburger, created by a Dutch team, was eaten at a demonstration for the press in London in August 2013.[2] There remain difficulties to be overcome before in vitro meat becomes commercially available.[3] Cultured meat is prohibitively expensive, but it is expected that the cost could be reduced to compete with that of conventionally obtained meat as technology improves.[4][5] In vitro meat is also a cultural issue. Some argue that it is less objectionable than traditionally obtained meat because it doesn't involve killing and reduces the risk of animal cruelty, while others disagree with eating meat that has not developed naturally.[6]

Contents

  • History 1
    • First public trial 1.1
  • Production 2
  • Research 3
    • Challenges 3.1
  • Differences from conventional meat 4
    • Health 4.1
    • Artificiality 4.2
    • Environmental 4.3
    • The role of genetic modification 4.4
    • Ethical considerations 4.5
    • Religious considerations 4.6
    • Economic 4.7
  • In fiction 5
  • In popular culture 6
  • See also 7
  • References 8
  • External links 9

History

We shall escape the absurdity of growing a whole chicken in order to eat the breast or wing, by growing these parts separately under a suitable medium.
— Winston Churchill, Fifty Years Hence, The Strand Magazine (December 1931)

The theoretical possibility of growing meat in an industrial setting has long captured the public imagination.

In vitro cultivation of muscular fibers was performed as early as 1971 by Russell Ross. Indeed the abstract was "Smooth muscle derived from the inner media and intima of immature guinea pig aorta were grown for up to 8 wk in cell culture. The cells maintained the morphology of smooth muscle at all phases of their growth in culture. After growing to confluency, they grew in multiple overlapping layers. By 4 wk in culture, microfibrils (110 A) appeared within the spaces between the layers of cells. Basement membrane-like material also appeared adjacent to the cells. Analysis of the microfibrils showed that they have an amino acid composition similar to that of the microfibrillar protein of the intact elastic fiber. These investigations coupled with the radioautographic observations of the ability of aortic smooth muscle to synthesize and secrete extracellular proteins demonstrate that this cell is a connective tissue synthetic cell."[7] For stem cells from animals, in vitro cultivation has been possible since the 1990s, including the production of small quantities of tissue which could, in principle be cooked and eaten. NASA has been conducting experiments since 2001, producing in vitro meat from turkey cells.[8][9] The first edible sample was produced by the NSR/Touro Applied BioScience Research Consortium in 2002: goldfish cells grown to resemble fish fillets.[1][4][10]

In 1998 Jon F. Vein of the United States filed for, and ultimately secured, a patent (US 6,835,390 B1) for the production of tissue engineered meat for human consumption, wherein muscle and fat cells would be grown in an integrated fashion to create food products such as beef, poultry and fish.

In 2001, dermatologist Wiete Westerhof from the University of Amsterdam, medical doctor Willem van Eelen, and businessman Willem van Kooten announced that they had filed for a worldwide patent on a process to produce in vitro meat.[11] In the process, a matrix of collagen is seeded with muscle cells, which are then bathed in a nutritious solution and induced to divide.[12] Scientists in Amsterdam study the culture medium, while the University of Utrecht studies the proliferation of muscle cells, and the Eindhoven University of Technology is researching bioreactors.[12]

In 2003, Oron Catts and Ionat Zurr of the Tissue Culture and Art Project and Harvard Medical School exhibited in Nantes a "steak" a few centimetres wide, grown from frog stem cells, which was cooked and eaten.[13]

The first peer-reviewed journal article published on the subject of laboratory-grown meat appeared in a 2005 issue of Tissue Engineering.[14]

In 2008, [15] The Dutch government has put US$4 million into experiments regarding in vitro meat.[8] The In Vitro Meat Consortium, a group formed by international researchers interested in the technology, held the first international conference on the production of in vitro meat, hosted by the Food Research Institute of Norway in April 2008, to discuss commercial possibilities.[1] Time magazine declared in vitro meat production to be one of the 50 breakthrough ideas of 2009.[16] In November 2009, scientists from the Netherlands announced they had managed to grow meat in the laboratory using the cells from a live pig.[17]

As of 2012, 30 laboratories from around the world have announced they're working on in vitro meat research.[18]

Shmeat is a nickname given to lab-created meat grown from a cell culture of animal tissue.[19][20] The etymology of this usage is the combination of “sheet” and “meat.”[21]

First public trial

On August 5, 2013, the world's first lab-grown burger was cooked and eaten at a news conference in London. Scientists from Maastricht University in the Netherlands, led by professor Mark Post, had taken stem cells from a cow and grown them into strips of muscle which they then combined to make a burger. The burger was cooked by chef Richard McGeown of Couch's Great House Restaurant, Polperro, Cornwall, and tasted by critics Hanni Ruetzler, a food researcher from the Future Food Studio and Josh Schonwald.[2] Ruetzler stated,

There is really a bite to it, there is quite some flavour with the browning. I know there is no fat in it so I didn't really know how juicy it would be, but there is quite some intense taste; it's close to meat, it's not that juicy, but the consistency is perfect. This is meat to me... It's really something to bite on and I think the look is quite similar.[22]

Ruetzler added that even in a blind trial she would have taken the product for meat rather than a soya copy.[22]

Tissue for the London demonstration was cultivated in May 2013, using about 20,000 thin strips of cultured muscle tissue. Funding of around €250,000 came from an anonymous donor later revealed to be Sergey Brin.[23] Post remarked that "there’s no reason why it can’t be cheaper...If we can reduce the global herd a millionfold, then I’m happy".[24] Still Post estimates it will probably take at least a decade before the process becomes commercially viable.[23]

Production

The process of developing in vitro meat involves taking

  • In Vitro Meat Consortium
  • New Harvest
  • The Modern Agriculture Foundation

External links

  1. ^ a b c d e f g h
  2. ^ a b World's first lab-grown burger is eaten in London
  3. ^ Building a $325,000 Burger
  4. ^ a b c
  5. ^ a b c Preliminary Economics Study of Cultured Meat, eXmoor Pharma Concepts, 2008
  6. ^
  7. ^
  8. ^ a b c d e
  9. ^
  10. ^ Advance announcement of paper's publication in Acta Astronautica (not found there, but note Journal articles below).
  11. ^ WO9931222 A1 Application WO9931222, van Eelen, Willem Frederik; Willem Jan van Kooten & Wiete Westerhof, "Industrial scale production of meat from in vitro cell cultures", published 1999-06-24 
  12. ^ a b c
  13. ^
  14. ^
  15. ^ a b c
  16. ^
  17. ^
  18. ^ Lab-Grown Meat? $1 Million Reward Deadline Nears at FoodSafetyNews.com
  19. ^
  20. ^
  21. ^
  22. ^ a b What does a stem cell burger taste like?
  23. ^ a b A Lab-Grown Burger Gets a Taste Test
  24. ^
  25. ^ a b
  26. ^ a b
  27. ^ Artificial meat grown in a lab could become a reality THIS year at DailyMail.co.uk
  28. ^ http://www.new-harvest.org/wp-content/uploads/2013/07/MayAdamSG2013MSciComm.pdf
  29. ^ meat habitatIn vitro at Terreform
  30. ^ a b Edelman, P. D, D. C. McFarland, V. A. Mironov, and J. G. Matheny. 2005. In vitro-cultured meat production. Tissue Engineering 11(5–6): 659–662.
  31. ^ a b c d e
  32. ^ McFarland, D. C., Doumit, M. E., & Minshall, R. D. (1988). The turkey myogenic satellite cell: Optimization of in vitro proliferation and differentiation. Tissue and Cell, 20(6), 899–908.
  33. ^ Benjaminson, M. A., Gilchriest, J. A., & Lorenz, M. (2002). In vitro edible muscle protein production system (MPPS): Stage 1, fish. Acta Astronautica, 51(12), 879–889.
  34. ^ Dodson, M. V., & Mathison, B. A. (1988). Comparison of ovine and rat muscle-derived satellite cells: Response to insulin. Tissue and Cell, 20(6), 909–918.
  35. ^ Doumit, M. E., Cook, D. R., & Merkel, R. A. (1993). Fibroblast growth factor, epidermal growth factor, insulin-like growth factor and platelet-derived growth factor-BB stimulate proliferate of clonally derived porcine myogenic satellite cells. Journal of Cellular Physiology, 157(2), 326–332.
  36. ^ I. Datar, M. Betti, Possibilities for an in vitro meat production system, Innovative Food Science and Emerging Technologies 11 (2010) at 17.
  37. ^ http://www.theatlantic.com/health/archive/2013/08/is-lab-grown-meat-good-for-us/278778/
  38. ^ Azcona, J.O., Schang, M.J., Garcia, P.T., Gallinger, C., R. Ayerza (h), and Coates, W. (2008). "Omega-3 enriched broiler meat: The influence of dietary alpha-linolenic omega-3 fatty acid sources on growth, performance and meat fatty acid composition". Canadian Journal of Animal Science, Ottawa, Ontario, Canada, 88:257–269
  39. ^
  40. ^ MeatIn VitroA Practical Health Guide to from the Animal Liberation Front
  41. ^
  42. ^ Eating in Vitro: Magic Meatballs at Next Nature
  43. ^
  44. ^ A Farm on Every Floor, The New York Times, August 23, 2009
  45. ^ Case Study – Landfill Power Generation, H. Scott Matthews, Green Design Initiative, Carnegie Mellon University. http://gdi.ce.cmu.edu/gd/education/landfill-case.pdf Retrieved 07.02.09
  46. ^
  47. ^ Lab-grown meat would 'cut emissions and save energy', 21 June 2011
  48. ^
  49. ^
  50. ^
  51. ^ a b The Vertical Farm Project. 2009. "Agriculture for the 21st Century and Beyond."
  52. ^ a b
  53. ^
  54. ^
  55. ^ a b
  56. ^
  57. ^
  58. ^ Synthetic meat: how the world's costliest burger made it on to the plate
  59. ^ Could vegetarians eat a 'test tube' burger?
  60. ^ Can Vegetarians Eat In-Vitro Meat? The Debate Rages.
  61. ^ a b c meatIn vitro at Food Ethics Council
  62. ^ In Vitro Meat: Power, Authenticity and Vegetarianism
  63. ^ Is Vat-Grown Meat Kosher? We Asked A Rabbi
  64. ^
  65. ^
  66. ^
  67. ^
  68. ^ http://bitelabs.org/
  69. ^
  70. ^ http://motherboard.vice.com/read/the-guy-who-want-to-sell-you-salami-made-out-of-james-franco-are-100-serious
  71. ^
  72. ^

References

See also

In February, 2014, a biotech startup called BiteLabs ran a campaign to generate popular support for artisanal salami made with meat cultured in vitro from celebrity tissue samples.[68] The campaign became viral on Twitter, where users tweeted at celebrities asking them to donate muscle cells to the project.[69] Media reactions to BiteLabs variously identified the startup as a satire on startup culture,[70] celebrity culture,[71] or as a discussion prompt on bioethical concerns.[72] While BiteLabs claimed to be inspired by the success of Sergey Brin's burger, the company is seen as an example of Critical Design rather than an actual business venture.

Shmeat was a subject on an episode of the Colbert Report on 17 March 2009.[67]

In popular culture

In the ABC sitcom Better Off Ted (2009–2010), the episode "Heroes" features Phil (Jonathan Slavin) and Lem (Malcolm Barrett) trying to grow cowless beef.

The Starship Enterprise from the TV and movie franchise Star Trek apparently provides a synthetic meat or in vitro meat as a food source for the crew,[66] although crews from The Next Generation and later use replicators.

In film, artificial meat has featured prominently in Giulio Questi's 1968 drama La morte ha fatto l'uovo (Death Laid an Egg) and Claude Zidi's 1976 comedy L'aile ou la cuisse (The Wing or the Thigh). "Man-made" chickens also appear in David Lynch's 1977 surrealist horror, Eraserhead. Most recently, it was also featured prominently as the central theme of the movie Antiviral (2012).

In vitro meat has often featured in science fiction. The earliest mention may be in Two Planets (original German title: Auf Zwei Planeten) (1897) by Kurd Lasswitz, where "synthetic meat" is one of the varieties of synthetic food introduced on Earth by Martians. Other notable books mentioning artificial meat include The Space Merchants (1952) by Frederik Pohl and C.M. Kornbluth; The Restaurant at the End of the Universe (1980) by Douglas Adams; Neuromancer (1984) by William Gibson; Oryx and Crake (2003) by Margaret Atwood; Deadstock (2007) by Jeffrey Thomas; and the Ware Tetralogy by Rudy Rucker.

In fiction

In a March 2015 interview with Australia's ABC, Mark Post said that the marginal cost of his team's original €250,000 burger was now €8.00. He estimates that technological advancements would allow the product to be cost-competitive to traditionally sourced beef in approximately ten years.[65]

The production of in vitro meat is currently very expensive – in 2008 it was about US$1 million for a piece of beef weighing 250 grams (0.55 lb)[1] – and it would take considerable investment to switch to large scale production. However, the In Vitro Meat Consortium has estimated that with improvements to current technology there could be considerable reductions in the cost of in vitro meat. They estimate that it could be produced for €3500/tonne (US$5037/tonne),[5] which is about twice the cost of unsubsidized conventional European chicken production.[4][5]

Economic

Jews disagree whether in vitro meat is kosher (food that may be consumed, according to Jewish dietary laws).[63] Some Muslim scholars have stated that in vitro meat would be allowed by Islamic law if the original cells and growth medium were halal.[64]

Religious considerations

In vitro meat needs technically sophisticated production methods making it harder for communities to produce food self-sufficiently and potentially increasing dependence on global food corporations.[62]

Independent inquiries may be set up by certain governments to create a degree of standards for in vitro meat.[61] Laws and regulations on the proper creation of in vitro meat products would have to be modernized to adapt to this newer food product.[61] Some societies may decide to block the creation of in vitro meat for the "good of the people" – making its legality in certain countries a questionable matter.[61]

The Australian bioethicist [15][25][31] Reactions of vegetarians to in vitro meat vary,[59] some feel the in vitro meat presented to the public in August 2013 was not vegetarian as fetal calf serum was used in the growth medium.[60]

Ethical considerations

To avoid the use of any animal products, the use of photosynthetic algae and cyanobacteria has been proposed to produce the main ingredients for the culture media, as opposed to the very commonly used fetal bovine or horse serum.[56] Some researchers suggest that the ability of algae and cyanobacteria to produce ingredients for culture media can be improved with certain technologies, most likely not excluding genetic engineering.[57]

More research is being done on in-vitro meat, and although the production of in-vitro meat does not require techniques of genetic engineering, there is discussion among researchers about utilizing such techniques to improve the quality and sustainability of in-vitro meat. Fortifying in-vitro meat with nutrients such as beneficial fatty acids is one improvement that can be facilitated through genetic modification. The same improvement can be made without genetic modification, by manipulating the conditions of the culture medium.[55] Genetic modification may also play a role in the proliferation of muscle cells. The introduction of myogenic regulatory factors, growth factors, or other gene products into muscle cells may increase production past the capacity of conventional meat.[55]

[54] Techniques of

The role of genetic modification

One skeptic is Margaret Mellon of the [15] However, it has been indicated that both vertical farming in urban areas and the activity of in vitro meat facilities will cause very little harm to the species of wildlife that live around the facilities.[52] Many natural resources will be spared from depletion due to the conservation efforts made by both vertical farming and in vitro meat, making them ideal technologies for an overpopulated world.[53] Conventional farming, on the other hand, kills ten wildlife animals per hectare each year.[52] Converting 4 hectares (10 acres) of farmland from its man-made condition back into either pristine wilderness or grasslands would save approximately 40 animals while converting 1 hectare (2 acres) of that same farmland back into the state it was in prior to settlement by human beings would save approximately 80 animals.

A study by researchers at Oxford and the University of Amsterdam found that in vitro meat was "potentially ... much more efficient and environmentally-friendly", generating only 4% greenhouse gas emissions, reducing the energy needs of meat generation by up to 45%, and requiring only 2% of the land that the global meat/livestock industry does.[46][47] The patent holder Willem van Eelen,[12] the journalist Brendan I. Koerner,[48] and Hanna Tuomisto, a PhD student from Oxford University all believe it has less environmental impact.[49] This is in contrast to cattle farming, "responsible for 18% of greenhouse gases"[50] and causing more damage to the environment than the combined effects of the world's transportation system. Vertical farming may completely eliminate the need to create extra farmland in rural areas along with in vitro meat.[51] Their combined role may create a sustainable solution for a cleaner environment.[51]

Research has shown that environmental impacts of cultured meat are significantly lower than normally slaughtered beef.[43] For every hectare that is used for vertical farming and/or in vitro meat manufacturing, anywhere between 10 and 20 hectares of land may be converted from conventional agriculture usage back into its natural state.[44] Vertical farms (in addition to in vitro meat facilities) could exploit biogas which is generally composed of 65% methane along with other gasses. This biogas could then be burned to generate electricity for the greenhouse or a series of bioreactors.[45]

Environmental

If in vitro meat turns out to be different in appearance, taste, smell, texture, or other factors, it may not be commercially competitive with conventionally produced meat. The lack of fat and bone may also be a disadvantage, for these parts make appreciable culinary contributions. However, the lack of bones and/or fat may make many traditional meats like Buffalo wings more palatable to small children.[41] Colorful in vitro meatball products specially tailored to their dietary needs could allow children to get accustomed to eating in vitro meat.[42]

Although in vitro meat consists of natural meat cells, consumers may find such a high-tech approach to food production distasteful. In vitro meat has been disparagingly described as 'Frankenmeat', reflecting a sentiment that it is unnatural and therefore wrong.[40]

Artificiality

Due to the strictly controlled and predictable environments of both in vitro meat farming and vertical farming, it is predicted that there will be reduced exposure to dangerous chemicals like pesticides and fungicides, severe injuries, and wildlife.[39]

Researchers have suggested that omega-3 fatty acids could be added to in vitro meat as a health bonus.[8] In a similar way, the omega-3 fatty acid content of conventional meat can also be increased by altering what the animals are fed.[38] An issue of Time magazine has suggested that the in vitro process may also decrease exposure of the meat to bacteria and disease.[1]

Large scale production of in vitro meat may or may not require artificial growth hormones to be added to the culture for meat production.[30][37]

Health

Differences from conventional meat

  • Proliferation of muscle cells: Although it is not very difficult to make stem cells divide, for meat production it is necessary that they divide at a quick pace, producing the solid meat.[31] This requirement has some overlap with the medical branch of tissue engineering.
  • Culture medium: Proliferating cells need a food source to grow and develop. The growth medium should be a well-balanced mixture of ingredients and growth factors. Scientists have already identified possible growth media for turkey,[32] fish,[33] sheep[34] and pig[35] muscle cells. Depending on the motives of the researchers, the growth medium has additional requirements.
    • Commercial: The growth medium should be inexpensive to produce. A plant-based medium may be less expensive than fetal bovine serum.[31]
    • Animal welfare: The growth medium should be devoid of animal sources (except for the initial "mining" of the original stem cells).[31]
    • Non-Allergenic: While plant based growth media are "more realistic," will be cheaper, and reduce possibility of infectious agents, there is also the possibility that plant-based growth media may cause allergic reactions to some consumers.[36]
  • Bioreactors: Nutrients and oxygen need to be delivered close to each growing cell, on the scale of millimeters. In animals this job is handled by blood vessels. A bioreactor should emulate this function in an efficient manner. The usual approach is to create a sponge-like matrix in which the cells can grow and perfuse it with the growth medium.

[8][1] There are several obstacles to overcome if it has any chance of succeeding; at the moment, the most notable ones are scale and cost.[31][8] meat is an outgrowth of the field of biotechnology known as in vitro The science for

Challenges

Research

The price of in vitro meat at retail outlets like grocery stores and supermarkets may decrease prices to levels that middle-class consumers consider to be "inexpensive" due to technological advancements.[26]

In vitro meat production requires a preservative, such as sodium benzoate, to protect the growing meat from yeast and fungus. Collagen powder, xanthan gum, mannitol and cochineal could be used in different ways during the process.[29]

Alternatively, meat could be grown into "real" muscle. However, this would require something akin to a circulatory system, in order to deliver nutrients and oxygen close to the growing cells, as well as to remove the waste products. Other cell types, such as adipocytes, would also need to be grown, and chemical messengers should provide clues to the growing tissue about the structure. Muscle tissue would also need to be physically stretched or "exercised" in order to properly develop.[1]

In vitro meat may be produced as strips of muscle fibre, which grow through the fusion of precursor cells – either embryonic stem cells, adult stem cells, or specialised satellite cells found in muscle tissue.[28] This type of meat can be cultured in a bioreactor.

[27] meat production could deliver up to 50,000 tons of meat from ten pork muscle cells.in vitro It has been claimed that, conditions being ideal, two months of [26][25]

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.