Vitamin B12_ vitamin

Vitamin B12_ vitamin

Xiao Bo, woman scientist of United States of America, found vitamin B12 in ox's liver infusion in 1947, and then analyzed by the chemist, it is an organic compound containing cobalt. Stability of its chemical property, it is the indispensable material of human hematopoiesis, lacking it will emerge
Malignant anemia.
Vitamin B12, namely resist vitamin for pernicious anemia, it is plain to also call the cobalamin, contain metallic element cobalt, only contain metallic element in vitamin, resist fatty liver, promote the storage in the liver of vitamin A; Promote cell reaching maturity and organism supersession. It is different from other B clan vitamins, the content is few in the general plant, and is only produced by the bacterium in some bacteria and soil. The liver, red meat, fish, milk and egg are that the mankind obtained the source of vitamin B12. The goods can be from making the by product of some antibiotic or special fermentation to get final product. Vitamin B12 is pink crystallization, aqueous solution is quite stable in the weak acid, it is extremely apt to decompose under strong acid, alkali, sunlight, oxidant and reducing agent are apt to destroy vitamin B12. When it absorbs by the gastrointestinal tract, a kind of glycoprotein (the factor while also calling) that must be secreted with the part of pylorus of stomach first Combine, could be absorbed. Scarce " The inner factor " And B12 that leads to the fact is scarce, treating should adopt injectable preparation. It is that vitamin B12 mainly has a form in the body to take off oxygen adenosine cobalamin plainly. It is coenzyme of hydrogen atom, alkyl, carbonyl or amino enzyme that exchanges each other on some catalysis and adjacent two carbon atom. Another kind of coenzymatic form is plain for methyl cobalamin in the body, it participates in the transshipment of methyl, concerned with each other often with function of folic acid, it can increase to influence nuclear acid and the intersection of protein and biosynthesis by leading folic acid, thus the one that promoted the erythrocyte is developmental and ripe.
Pernicious anemia will take place while lacking vitamin B12, requirement to B12 of the human body is few, the human body nearly takes 12 g every day ' 1/ 1000mg) ,People will not lack in general cases.


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