The most B vitamins in fruits are oranges, oranges and oranges.
Vitamin B is the general name of B vitamins, and there are more than 12 kinds, among which 9 kinds of vitamins are recognized as essential for human body, all of which are water-soluble vitamins. Pregnant women or babies lack vitamin B and are prone to skin diseases, such as peeling hands and feet, eczema and rotten mouth. Each B vitamin has its own characteristics.
Vitamin B 1: also known as anti-beriberi vitamin. It is a white powder with slight odor, bitter taste, easy to dissolve in water and decompose when it meets alkali, but it is stable to heat in acidic solution, and oxidants and reductants can also make it lose its function. When exposed to light and heated, the titer decreases, so it should be stored in a dark place, not for a long time.
B2 (Vitamin B2: also known as riboflavin, is a vitamin widely distributed in nature. It is an essential nutrient for mammals, and its coenzyme forms are flavin mononucleotide and flavin adenine dinucleotide. Vitamin B2 is orange-yellow needle-like crystal, slightly bitter in taste, yellow-green fluorescence in aqueous solution, and easy to decompose under alkaline or light conditions Slightly soluble in water, soluble in sodium chloride solution, soluble in dilute sodium hydroxide solution.
Vitamin B3: Also known as nicotinic acid and nicotinic acid, the scientific name is pyridine 3- carboxylic acid. It is a B vitamin, which can be made by oxidation of nicotine. Together with nicotinamide, it is called vitamin PP, which is the most needed among B vitamins.
Calcium pantothenate: also known as pantothenic acid, it is white powder; Odorless and slightly bitter; It is hygroscopic; The aqueous solution is neutral or weakly alkaline. Soluble in water, slightly soluble in ethanol, almost insoluble in chloroform or ether.
B6 (Vitamin B6: also known as pyridoxine, is a water-soluble vitamin, soluble in water and alcohol, slightly soluble in fat solvents, easily damaged by light or alkali, and not resistant to high temperature. Vitamin B6 combines with phosphoric acid in vivo to form pyridoxal phosphate or pyridoxamine phosphate. They are coenzymes of many amino acid metabolizing enzymes, so they are very important for amino acid metabolism.
Vitamin B7: Vitamin H, also known as biotin and coenzyme R, is a water-soluble vitamin.
Vitamin B9: Folic acid, also known as pteroyl glutamic acid, has many auxiliary forms in cells and is responsible for the metabolism and utilization of single carbon. It is used to synthesize purine and thymine, and it is used as the raw material for DNA replication during cell proliferation, providing methyl to make homocysteine synthesize methionine, and assisting the conversion between various amino acids.
Vitamin B 12: also known as cobalamin, an anti-pernicious anemia vitamin, contains the metal element cobalt, which is the only vitamin. Vitamin B 12 is pink crystal, and its aqueous solution is quite stable in weak acid and easy to decompose in strong acid and alkali. Sunlight, oxidants and reductants are easy to destroy vitamin B 12. When it is absorbed by gastrointestinal tract, it must be combined with a glycoprotein secreted by gastric pylorus to be absorbed. Lack of B 12 caused by lack of "internal factors" should be treated by injection.
In addition, the members of B vitamins are B 13 and B 15, while B 17 is actually a non-B vitamin.