Information about vitamin A
The vitamin A belongs to the family of alike appearing molecules such as retinoids for the completing the remainders of vitamin sequence. The important part of vitamin a is retinyl group which is now available in varied forms. In the animal food the main content is vitamin A which is an ester, basically retinyl palmitate converting into alcohol in the small intestine. In certain products vitamin A is also found as aldehyde. Acid basically retinoic acid contain vitamin A in lesser amount but not shows any function in retina which is the eye part of human body.
One will find that all types of vitamin A is containing beta-ionone ring which is attached by iso pronoid chain. This structure of vitamin A is required for vitamin activity. The users of vitamin A can see that the orange pigment found in the carrots-beta -carotene produces two joined retinyl group for increasing the level of vitamin A in the body. At present no other carotenes is carrying the vitamin activity ability among them.
One can find vitamin A in various forms such as retinol which is a form of it is found while the consumption of animal food sources like yellow, fat-soluble; vitamin plays important role in vision and bone growth. Another form is retinoids which is a chemical compound representing vitamin A. The vitamin A was found in the year 1906 showing that along with carbohydrates, proteins, and fats it is impotant for both human and animals.
Now users of vitamin A will also like to know in which food it is mainly found. One will get vitamin A in liver of beef, chicken, turkey,fish, pork; sweet potato, carrot, broccoli leaf, kale, butter , spinach, leafy vegetables, pumpkin etc. The role of intake of vitamin A is immense such as it plays an important role in vision,gene transcription, immune function, embryonic development and reproduction, bone metabolism, haematopoiesis, skin health, and antioxidant Activity etc.
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