Kinesiology 3339A/B Lecture 19: Protein- Part 3
22 Oct 2018
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Protein quality methods: biological value (bv) = (retained nitrogen/absorbed nitrogen) x 100 where, Ratio of how much you kept in body of what you absorbed. If number drops, it is less affective, more is exerted or utilized: absorbed n = n intake (consume) (fecal n (not absorbed) fecal n on zero n diet) Amount of n in foods you eat that you actually absorb into your body. Whenever you swallow something, it isn"t in body needs to be absorbed in. Nitrogen is measured because only macronutrient in protein. When have n, can see how much protein. Fecal n: n in stool samples, the n that wasn"t absorbed. Some n that you absorb is not going to go into body portion but it is going to be deaminated in the liver and n will be excreted primarily in urine and by perspiration. Some of what you absorb form diet is oxidized and not retained.
