A2 milk and its importance in dairy production and global market
DOI:
https://doi.org/10.17205/SZIE.AWETH.2018.1.001Kulcsszavak:
A2 milk, BCM7, cattle breedsAbsztrakt
Hot topic in the dairy industry today is the growing popularity of A2 beta-casein milk among consumers and dairy farmers. Milk consists of water, lactose, fat, milk proteins, minerals and miscellaneous. The main milk proteins are caseins. The main types of caseins are alpha-casein, beta-casein, kappa-casein and moreover, the milk protein contains amino acids, peptides. The A1 and A2 beta casein variants are differ only in one amino acid because of a mutation in the 67th position. In preliminary research, A1 and A2 milk proteins have been shown to behave differently during the digestive process due to an amino acid variation. The A1 β-casein amino acid chain is susceptible to breakdown during normal enzymatic digestion, the peptide it breaks down to is a bioactive opioids; beta-casomorphins (BCM), one of peptides, BCM7 has been widely studied. A2 β-casein’s amino acid chain is not as likely to experience this breakdown into BCM7 (Clarke, 2014). This study is a short summary about the previous researches and basic information about A2 milk production. In Hungary, there is a farm with 200 dairy cattle and good genetic background. This dairy farm have started to select and test their animals for A2 milk production.
Hivatkozások
A2 Corporation (2004): A2 Corporation 2004 Annual Report
Adams, C. (2014). Lion relaunch a bid to slow A2 growth. The New Zealand Herald. Auckland. 7th June 2014.
Beavers, L., Van Doormaal, B. (2016): Beta casein, A2 milk and genetics. Canadian Dairy Network. https://www.cdn.ca/document.php?id=461
Béri, B. (2013): A koncentrált tej termelésének lehetősége és helyzete. Állattenyésztés és Takarmányozás, 62. 4. 374–383.
Bodnár, Á., Prágai, A., Kovács, A. (2012): A zebu (Bos indicus) és keresztezési lehetőségei: a santa gertrudis kialakulása és használata egyes helyi fajták javításában. Animal welfare, etológia és tartástechnológia, 8, 1, 118–126.
Cattell, M. B., Nelson, A. J. (2010): Beta-Casomorphin-7 and A1, A2 Milk – The devil’s in the details. Windsor Dairy, LLC, presentation
Clarke, A., Trivedi, M. (2014): Bovine Beta Casein Variants: Implications to Human Nutrition and Health. International Conference on Food Security and Nutrition. Singapore
EFSA (2009): Review of the potential health impact of β-casomorphins and related peptides". European Food Safety Authority report, EFSA Journal, 231. pp. 1–107. https://doi.org/10.2903/j.efsa.2009.231r
Givens, I., Aikman, P., Gibson, T., Brown, R. (2013): Proportions of A1, A2, B and C b-casein protein variants in retail milk in the UK. Food Chemistry, 139. 1–4. 549–552. https://doi.org/10.1016/j.foodchem.2013.01.115
Holló, I., Szabó, F. (2016): Szarvasmarhatenyésztés, pp. 73–79.
Kaminski, S., Cieslinska, A., Kostyra, E. (2007): Polymorphism of bovine beta casein and its potential effect on human health. Journal of Applied Genetics, 48. 3. 189–98. https://doi.org/10.1007/BF03195213
Kawasaki, E. (2014): Type 1 Diabetes and Autoimmunity. Clin Pediatr Endocrinol., 23. 4. 99–105. https://doi.org/10.1297/cpe.23.99
Laugesen, M., Elliott, R. (2003): Ischaemic heart disease, Type 1 diabetes, and cow milk A1 beta-casein. The New Zealand Medical Journal, 116. 1168:U295
Nguyen, D. D., Johnson, S. K., Busetti, F., Solah, V. A. (2015): Formation and degradation of Betacasomorphins in Dairy Processing. Critical Reviews in Food Science and Nutrition, 55. 1955–1967. https://doi.org/10.1080/10408398.2012.740102
Ooi, T. (2011): A2 deal has milk pouring into UK. The Australian, 16 November 2011. p. 41.
Our farmers (2014): a2 Milk Company. https://a2milk.co.uk/Our-Farmers/
Pal, S., Woodford, K., Kukuljan, S., Ho, S. (2015): Milk Intolerance, Beta-Casein and Lactose. Nutrients, 7. 9. 7285–7297. https://doi.org/10.3390/nu7095339
Versteeg, B. (2016): A2 milk popularity on the rise. Semex Genetics, USA. http://www.semexusa.com/i?page=a2-article
White, A. (2013). 'Allergy-free' milk firm reaches ₤1m sales. The Telegraph. London. 29 October 2013.
Woodford, K. (2007): A2 Milk, Farmer Decisions, and Risk Management. 16th International Farm Management Association. University College. Cork, Ireland
Woodford, K. (2011): Milk proteins and human health: A1 versus A2 Beta-casein. General Practitioners Conference, Sydney, 22 May 2011
Zoetis Genetics (2013): Identifying Milk Proteins in one Step with Clarifide ZoetisUS.com. 2013. Web Jan. 2016.
Internet:
Internet 1: https://thea2milkcompany.com/
Internet 2: Koncentrált Tejű Fajták Egyesülete: http://koncentraltteju.hu/main.htm
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Copyright (c) 2018 Bodnár Ákos, Hajzser Adél, Egerszegi István, Póti Péter, Kuchtík Jan, Pajor Ferenc
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