Name: Vitamin U; iodine methyl-methylthio butyric acid; vitamin U
Information: formula C6H14NO2IS, molecular weight 291.2. Methylthio butyric acid methyl species of iodine. Found in cabbage, lettuce, alfalfa and other green leafy vegetables. With special smell, taste bitter salty. Light or air, is not a stable long-standing home. Soluble in water, insoluble in ethanol and ether. Acidic aqueous solution. Primarily for the treatment of gastric ulcer and duodenal ulcer. Methionine can be prepared by the reaction with methyl iodide.
Water-soluble vitamins (water-soluble vitamins)
In an ideal state, people from the diet to obtain the required vitamins. In the following has resulted in the human body needs vitamin deficiency. All water-soluble vitamins are involved in catalytic function, B vitamins are coenzymes of many kinds of composition, these coenzyme bears hydrogen, electronic or group transfer. Them to participate by the enzyme-catalyzed sugar, fat, protein and nucleotide metabolism such as vitamin C to participate in many hydroxylation reactions. Water-soluble vitamins in animal and plant cells, widespread. Function of fat-soluble vitamins B vitamins is not as clear. Vitamin K to participate in some carboxylation of glutamic acid in protein, vitamin D to promote absorption of calcium, vitamin A is an integral part of the rhodopsin protein.
1. Food shortage, food transportation, storage, processing and inappropriate, resulting in loss of vitamins in food, resulting in inadequate vitamin intake.
2. When people reduce the digestion and absorption features, such as insufficient chewing, gastrointestinal function reduced dietary fat is too small, too much cellulose digestion and absorption of vitamins such as would cause the rate of decline.
3. Different physiological stage populations, such as pregnant women, lactating period, period of growth and development of children, disease, operative period the population is relatively higher requirements for vitamins.
4. Under special circumstances to live, work the crowd, due to mental stress or environmental reasons, the relatively higher requirement for vitamin
Often due to a vitamin deficiency caused by people's attention, and then found that a certain food supplement, the symptoms disappeared, and then extracted from such kinds of active ingredients of food, followed by chemical synthesis methods to get this material, and make more in-depth research.
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