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Nutrition

Question
8 out of 74
 

Which of the following statement is true about net protein utilization? (DNB Dec 09)



A It is the ratio of total nitrogen retained by total nitrogen intake multiplied by 100

B It is marker of quantity of protein

C It is the amount of one amino acid per gram of a protein divided by the amount of same amino acid per gram of egg protein.

D If the NPU is high, the amount of protein requirement in diet is high

Ans. A It is the ratio of total nitrogen retained by total nitrogen intake multiplied by 100 Ref: Park, 22nd Edi, Pg : 563

NPU: It is the ratio of total nitrogen retained by total n2 intake multiplied by 100
Some facts about NPU:

1. It is measure of protein quality & is a product of digestibility coefficient & biological value divided by 100. It gives more complete expression of protein quality than the amino acid score.

2. It is a biological method & requires special laboratory facilities. The protein requirement varies with the NPU of dietary protein. If NPU is low, more protein is required & vice versa.

3. The NPU of protein of Indian diet varies between 50 – 80.

Nutrition Flashcard List

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