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The metabolism of nitrogen and the digestibility coefficient and biological value of the proteins and net protein utilization in poor rice diet supplemented with methionine fortified soy flour or skim

Panemangalore, M. and Parthasarathy, H. N. and Kantha, Joseph and Sankaran, A. N. and Narayana Rao, M. and Swaminathan, M. (1964) The metabolism of nitrogen and the digestibility coefficient and biological value of the proteins and net protein utilization in poor rice diet supplemented with methionine fortified soy flour or skim. Canadian Journal of Biochemistry, 42. pp. 641-650.

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Abstract

The effect of supplemeilting a poor rice diet con~monly used in Iildia with methionine-fortified soya flour or skim milk powder was studied in seven girls aged 8-9 years, using as criteria: the retention of nitrogen, digestibility coefficient, biological value, and net protein utilization of the proteins. The retention of nitrogen on the rice diet was very low (20.3 mg/kg day). Suppleinentation of the rice diet with soya flour, methionine-fortified soya flour or skim milk powder, so as to provide about 1 g/kg extra protein, made up the protein deficiency in the rice diet and resulted in a significant increase in nitrogen retention (95.6, 112.1, and 113.6 mg/kg day). The retention of nitrogen on the rice diet supplemented with methionine-fortified soya flour (112.1 mg/kg day) or skiin milk powder (113.6 mg/kg day) was nearly the same and significantly higher than that (95.6 ing/kg day) observed with a diet supplemented with soya flour. The biological value and net protein utilization of the mixed proteins of rice - skim inilk powder diet and rice-methionine-fortified soya flour diet (62.4 and 62.2 and 53.3 and 54.0 respectively) were nearly the same and signiticantly higher than those (58.3 and 49.0) of rice - soya flour diet. The results show that methionine-fortified soya flour is almost as good as skim milk powder and significantly superior to soya flour as a protein supplement to rice diet.

Item Type: Article
Uncontrolled Keywords: poor rice diet protein-rich foods skim milk powder
Subjects: 600 Technology > 08 Food technology > 16 Nutritive value
600 Technology > 01 Medical sciences > 03 Child nutrition
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 24 Feb 2010 07:21
Last Modified: 07 May 2012 05:14
URI: http://ir.cftri.com/id/eprint/6028

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