Discuss the functions, food sources and deficiency related to the following nutrients:
VitaminA
Vitamin A is a fat-soluble vitamin that is necessary for the function of photoreceptors in the retina. It also helps keep the epithelium of the skin, lungs, intestine, and urinary tract healthy and protects against infections. (1) Vitamin A is also known as retinol. Vitamin A is necessary for both low-light (scotopic vision) and color vision. (2) Vitamin A is an antioxidant. (3)
Functions: In food, vitamin A typically occurs as a fat compound called retinyl palmitate. The body converts retinyl palmitate to retinol in the small intestine. The retinol functions as a storage form of the vitamin, and can be converted to its visually active form, retinal. The associated acid (retinoic acid), a metabolite that can be irreversibly synthesized from vitamin A, has only partial
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Moist heat method.
Fruits and vegetables
Brietly discuss various functions of food with appropriate examples.
Protein sparing action of carbohydrates.
Meat and meat products
Discuss the functions, food sources and deficiency related to the following nutrients:
VitaminA
List down different kinds of food preservation methods commonly used at home. Explain the principle of the methods used with appropriate examples. See the methods being used in your family and neighborhood.