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  4. A healthy person eats the following diet-5 gm raw sugar,. 4 gm albumin, 10 gm pure buffalo ghee adultrated with 2 gm vegetable ghee (hydrogenated vegetable oil) and 5 gm lignin. How many calories he is likely to get?

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Q. A healthy person eats the following diet-5 gm raw sugar,. 4 gm albumin, 10 gm pure buffalo ghee adultrated with 2 gm vegetable ghee (hydrogenated vegetable oil) and 5 gm lignin. How many calories he is likely to get?

NEETNEET 2013Digestion and Absorption

Solution:

Physiological value is the energy produced by 1 gm of food on oxidation in the body. For carbohydrates it is 4.0 Kcal/g, for proteins it is 4.0 Kcal/g and it is 9.0 Kcal/g for fats. Lignin is a fibre that is present in plant cells but it does not produce energy. Hence, 5 g raw sugar will yield 5 x 4.0 = 20.0 Kcal 4 g albumin will yield 4 x 4.0 = 16.0 Kcal (10 + 2) g of fat will yield 12x9.0=108.0 Kcal Total yield = 144 Kcal.