Vitamin B12 is a vitamin that requires the help of intestinal secretions to be absorbed and is involved in the production of red blood cells in the bone marrow, which prevents damage to nerves in the brain.

Vitamin B12

Vitamin B12, also known as cobalamin or cyanocobalamin, is the latest of the B vitamins to be discovered to date. It can be destroyed to a certain extent when exposed to heat, but the loss of short-term high-temperature sterilization is small, and the loss of ordinary cooking process is about 30%.

Vitamin B12 is a polycyclic compound containing 3-valent cobalt, 4 reduced pyrrole ring together into a large ring of cochineal (similar to porphyrin), is the core of the vitamin B12 molecule. Therefore, compounds containing this ring are known as cochineal-like compounds.

The recommended daily amount of vitamin B12 is:

1, 0-1 year old infants, vitamin B12 daily recommended amount of 0.52 - 1.5 micrograms;

2, 1-10 years old children, vitamin B12 daily recommended amount of 2.0 - 3.0 micrograms;

3, 11-18 years old children, vitamin B12 daily recommended amount of 3.0 micrograms;

3, 11-18 years old children, vitamin B12 daily recommended amount of 3.0 micrograms;<

4, pregnant women and lactating mothers, vitamin B12 daily recommended amount 4.0 micrograms.

Role and function of vitamin B12

Vitamin B12 is a vitamin that is easily deficient in people with digestive disorders, and is also an indispensable and important element for the production of red blood cells, which will lead to pernicious anemia if severely deficient.

The human body needs very little vitamin B12, vitamin B12 is mainly found in meat, intestinal bacteria can be synthesized, so as long as the normal diet is generally not deficient. A small number of malabsorption people must pay special attention.

The role and function of vitamin B12 are as follows:

1, promote the development and maturation of red blood cells, prevent pernicious anemia;

2, increase the utilization of folic acid, promote the metabolism of carbohydrates, fats and proteins;

3, can promote the synthesis of proteins, which has an important role in the growth of infants and young children;

Foods containing vitamin B12

Vitamin B12 is only found in animal foods, mainly liver, meat, dairy products also contain a small amount. Such as animal liver, kidney, beef, pork, chicken, fish, clams, eggs, milk, cheese, dairy products, curd and so on.