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%.

상품명:	비타민 12
CAS :	68-19-9
MF :	C63H88CoN14O14P
MW :	1355.37
EINECS :	200-680-0
줄여서 VB12라고 불리는 비타민 B12는 코발라민으로도 알려져 있으며 B 비타민 중 하나이며 코발트 코린 클래스를 포함하는 복합 유기 화합물 클래스이며 링 중앙의 유사한 포르피린 코린 평면에 3가 코발트를 포함합니다. . 그것은 발견 된 가장 크고 가장 복잡한 비타민 분자입니다. 또한 금속 이온이 함유 된 유일한 비타민입니다. 수정은 적색이며 적색 비타민이라고도하며 식물은 VB12를 포함하지 않으며 VB12를 생산할 수 없습니다. 간은 VB12의 가장 좋은 공급원이며 우유, 육류, 계란, 생선 등에서 유래하며, VB12는 RNA와 DNA 합성에 필수적인 코엔자임입니다. 생체 내에서 VB12가 부족하면 말초 신경 및 중추 신경계와 같은 신경계에 병리학 적 변화를 일으킬 수 있습니다.