1, with different components: A2β- casein in A2 milk and A 1β- casein in common milk have 1 amino acids in the amino acid chain, which is different. A 1β- casein can produce β-casein -7 during human digestion, while A2 milk does not produce BCM-7.
2. Different milk sources: Whether milk contains A 1 or A2β- casein is related to the genes of dairy cows. Most cows produce A 1β- casein, and only pure A2 cows produce milk containing A2β- casein.
3. Applicable people: Ordinary milk is cheaper than A2 milk, which is more suitable for people who drink milk and has no adverse reactions.
A2 milk introduction
A2 milk refers to the type of β casein in animal milk, A2-β casein, which is mainly used for the classification of common milk. Because early cows all produced A2 milk, and the opposite A 1 milk was caused by gene mutation in the later artificial feeding process, A2 milk was considered to be more primitive. Only a few western cows widely used in dairy processing can produce A2 milk. To produce A2 milk, enterprises need to carry out professional genetic testing on dairy cows.
Pure A2 cows were screened out, and the milk produced by these cows was processed later. A2 milk is more precious because of rare cattle breeds and special selection process. Scientists believe that this genetic mutation occurred 5000- 10000 years ago, when cows were brought to Europe.
Refer to the above content: Baidu Encyclopedia -A2 Milk