Vitamin are necessary in small quantities for normal health and growth in higher forms animal life. Vitamins are biologically important compounds such as carbohydrates, lipids, and proteins. These latter substances are indispensable for proper bodily functions, almost all of them can be synthesized by animals in adequate quantities. On the other hand, generally cannot be synthesized in amounts sufficient to meet bodily needs and therefore must be obtained from the diet or from some synthetic source. prozon Vitamins are called essential nutrients. Vitamins are different from the other biological compounds in that relatively small quantities are required to complete their functions. These functions are of a catalytic or regulatory nature, facilitating or controlling vital chemical reaction in the body’s cells. If a vitamin is absent from the diet or is not properly absorbed by the body, a specific deficiency disease may develop. Vitamins are designated by selected letters of the alphabet, as in vitamin D or Vitamin C, they are also designated by chemical, such as niacin and folic acid. Biochemists separate them in two groups, there are as fat-soluble and water-soluble vitamins. Simple and chemical names of vitamins of both groups, with their main deficiency symptoms, are listed in the table. Any of the First of the every evidence for the existence of vitamins in the late 19th century work of the physician and Eijkman. 1890 a nerve broke out among his laboratory chickens. The disease was similar to the polyneuritis associated with the disorder beriberi. it is caused by the feeding chickens a diet of polished white rice when the animal were fed rice. In 1906-o7 British observed that animal cannot synthesize certain amino acids and salts could not by themselves support growth.
In 1912 Hopkins published his findings about the missing nutrients, which he described as funk, demonstrated that polyneuritis produced in pigeons fed cured by supplementing the birds, that was removed from rice during polishing. Because every of these factors had a nitrogen containing the compound vital amines, that he later shortened to vitamins. when was discovered that not all of the vitamins contain nitrogen and, therefore, not all are amines. globa
American researcher Elmer McCollum are divided vitamins in two groups: water soluble and the fat soluble. It was realized that the water soluble are growth factor, vitamin B, was not a single entity but at least one of which prevented polyneuritis in pigeons.
The vitamins regulate reactions that occur in metabolism, in contrast to other dietary known as macronutrients, which are the compounds by the vitamins.
Vitamin C are water-soluble vitamins have a catalytic function; carbohydrates, and proteins. Most plant and animal tissue involved in metabolism. Infidol
Some of the structure of fat-soluble vitamins and biological membrances or assist in maintaining the integrity of membranes.
Some vitamins are fat soluble function at the genetic level by controlling the enzymes. Vitamins are necessary for specific functions in highly different and specialized tissue; therefore, their distribution are nature tends more than that of the water soluble vitamins.
Sources of vitamins;
Vitamin are found all living organisms either because they are synthesized in the organism from the environment, are not distributed equally throughout nature. Any certain tissue are absent or species; for example, beta-carotene, which can be converted to vitamin A, is synthesized in plant tussues but not in animal tissues. Vitamins A and D3 occur only in the animal tissue. Both plant are very important natural vitamin source for the human beings. Centrum pakistan
Vitamins are not equally distributed in foodstuffs, the more likely it is that he will lack adequate amounts of one or more vitamins.
Natural vitamins are better than synthetic vitamins by studying chemical structure of vitamin C
Water-soluble vitamins in this classification are all water-soluble, the degree to which they dissoluve in water in variable.
Vitamin groups of belong to organic compound called quinines. Each vitamin k is excreted in the bile and thus appears in the faces. Vitamin D its breakdown are excreted only in the feces. https://myvitaminhub.com/