Amino acid supplementation of proteins. I. The effect of supplementing ragi (Eleusine coracana) and ragi diets with lysine, threonine and skim milk powder on the nutritive value of proteins.

Leela, R. and Daniel, V. A. and Venkat Rao, S. and Hariharan, K. and Rajalakshmi, D. and Swaminathan, M. and Parpia, H. A. B. (1965) Amino acid supplementation of proteins. I. The effect of supplementing ragi (Eleusine coracana) and ragi diets with lysine, threonine and skim milk powder on the nutritive value of proteins. Journal of Nutrition and Dietetics, 2. pp. 78-82.

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Abstract

Cereals and millets form the staple fooc of a large majority of the population ir the world.1 They also form the main source of proteins in the dietaries consumed by the people in several developing countries.1 The proteins of cereals and millets are of medium nutritive value and are lacking partially in certain essential amino acids such as lysine and threonine. 2'3 Recent investigations have shown that the nutritive value of the proteins of certain cereals, e.g., wheat and rice, can be improved to a significant extent by fortification with lysine and threonine.4'5 The important millets consumed widely in different countries included kaffir corn (Sorghum vulgare), pearl millet (Pennisetum typhoideum) and ragi (Eleucine coracana).6 Ragi is consumed by the people in certain parts of India, Ceylon and Africa.6 The protein content of ragi has been reported to vary widely from 7.1 to 10.6 percent depending on the variety.2,3 Ragi proteins have been reported to be a good source of all essential amino acids except lysine and threonine.3 Kurien et al7,8 reported that about 28% of the total nitrogen in ragi is present in the husk and the loss of ragi protein in digestion is high. The protein efficiency ratio of ragi proteins has been reported to be 0.71 and 2.0 at 5% and 10% levels of protein intake respectively. 9,10 The overall nutritive value of poor ragi diets as judged by the growth of albino rats has been found to be low (6-9g/week) and can be improved markedly by the incorporation of protein supplements, e.g , Indian multipurpose food so as to provide abo'ut 4 percent extra protein in the diet indicating thereby that the quality and level of protein present in ragi diets (about 8 to 9%) are inadequate to promote optimal growth.11,12 The present investigation relates to studies on the effects of supplementing ragi and a poor ragi diet with lysine and threonine or with skim milk powder on the nutritive value of their proteins.

Item Type:	Article
Uncontrolled Keywords:	ragi diet, lysine, threonine, skim milk powder, nutritive value, proteins
Subjects:	600 Technology > 08 Food technology > 16 Nutritive value 600 Technology > 08 Food technology > 21 Cereals
Divisions:	Dept. of Biochemistry
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	20 Jul 2012 11:02
Last Modified:	20 Jul 2012 11:02
URI:	http://ir.cftri.res.in/id/eprint/2972

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