Determine the occurrence of vitamin D, Biology

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Occurrence of Vitamin D

Cholecalciferol is synthesized in the skin by the action of ultraviolet light on 7-dehydrocholesterol which is widely distributed in animal fat. Vitamin D is relatively stable in foods. Storage, processing and cooking have little effect on its activity although in fortified milk upto 40% of added vitamin may cost as a result of exposure to light.

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