Tabulate your result in the following format
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Tabulate your result in the following format

PRACTICAL 4: Proximate analysis of food

Task 1: DETERMINATION OF CRUDE PROTEIN BY KJELDAHL METHOD

1. Tabulate your result in the following format.


2. Describe why millilitres of hydrochloric acid (HCl) can be used as an indirect measure of the protein content of a sample.

3. Why is the conversion factor from Kjeldahl nitrogen to protein different for various foods, and how is the factor of 6.25 obtained?

Hint
Science2. Because HCl is the titrant used to titrate the borate ion, it can be used as an indirect measure. The amount of borate ion produced throughout the method serves as an indicator of the amount of nitrogen and thus protein present....
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