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Bitamina B12

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Vitamin B 12, also known as cobalt amine, is the only vitamin containing metal elements. In nature, vitamin B12 is synthesized by microorganisms. Higher animals and plants cannot make vitamin B12. Vitamin B12 is the only vitamin that requires the help of an intestinal secretion (endogenous factor) to be absorbed. Some people due to gastrointestinal abnormalities, lack of this endogenous factor, even if adequate dietary sources can also suffer from malignant anemia. There is basically no vi...


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Vitamin B 12, also known as cobalt amine, is the only vitamin containing metal elements. In nature, vitamin B12 is synthesized by microorganisms. Higher animals and plants cannot make vitamin B12. Vitamin B12 is the only vitamin that requires the help of an intestinal secretion (endogenous factor) to be absorbed. Some people due to gastrointestinal abnormalities, lack of this endogenous factor, even if adequate dietary sources can also suffer from malignant anemia. There is basically no vitamin B12 in vegetable foods. It stays in the gut for a long time and takes about three hours (most water-soluble vitamins take only a few seconds) to be absorbed. Vitamin B 12's main physiological function is to participate in the production of bone marrow red blood cells, prevent malignant anemia, prevent brain nerve damage. Vitamin B 12 is one of the last B vitamins to be found so far. Vitamin B12 is a polycyclic compound containing 3 valent cobalt. Four reduced pyrrole rings are linked together to form a Golin macroring (similar to porphyrin), which is the core of vitamin B12 molecule. Therefore, compounds containing this ring are referred to as Golin-like. Vitamin B12 is a light red acicular crystal which is easily soluble in water and ethanol. It is most stable under the condition of weak acid pH 4.5 and 5.0, and decomposes in strong acid (pH < 2) or alkaline solution, which can be destroyed to some extent in the event of heat. But short time high temperature disinfection loss is small, encounter bright light or ultraviolet ray is easy to be destroyed. The loss of ordinary cooking process is about 30%.

 

Ngalan sa Produkto: VITAMIN 12  gvbrwsbhrwesbrwesbrwesbrwes
CAS: 68-19-9
MF: C63H88CoN14O14P
MW: 1355.37  
EINECS: 200-680-0
Ang Vitamin B12, nga gitawag nga mubo nga VB12, nga nailhan usab nga cobalamin, ug usa sa mga bitamina nga B, usa ka klase nga komplikado nga mga organikong compound nga adunay sulud nga klase nga cobalt Corrin, ug adunay sulud nga cobalt sa parehas nga porphyrin Corrin nga eroplano sa butnga sa singsing .Kini ang labing kadaghan ug labing komplikado nga molekula sa bitamina nga nadiskobrehan. Kini ra usab ang bitamina nga adunay metal ion. Ang kristal pula, gitawag usab kini nga pula nga bitamina. Ang tanum wala sulud nga VB12, ug dili makahimo VB12. Ang atay mao ang labing kaayo nga gigikanan sa VB12, dayon gikan sa gatas, karne, itlog, isda ug uban pa. Ang VB12 usa ka hinungdanon nga coenzyme sa kalangkuban sa RNA ug DNA. Ang kakulang sa VB12 sa vivo mahimong hinungdan sa mga pagbag-o sa pathological sa gikulbaan nga sistema sama sa peripheral nerve ug sentral nga gikulbaan nga sistema.

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