Effect of fermentation on biochemical characteristics of sorghum flour supplemented with chickpea flour

Fadlallah, Omima E. and Abdullahi, H. El Tinay and Babiker, Elfadil E. (2010) Effect of fermentation on biochemical characteristics of sorghum flour supplemented with chickpea flour. Journal of Applied Sciences Research, 6 (7). pp. 860-865.

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Abstract

Sorghum flour was supplemented with 15 and 30% chickpea flour. Sorghum flour and the supplement were fermented at 35 oC for 0, 8, 16, and 24 h. Changes in pH, titrable acidity, total soluble solids, protein content, in vitro protein digestibility and amino acid composition were investigated during fermentation and/or after supplementation of sorghum flour with chickpea. The pH of the fermenting material decreased sharply with a concomitant increase in the titrable acidity. The total soluble solids remained unchanged with progressive fermentation time. The protein content of sorghum cultivar was found to be 9.69 and that of chickpea was 22.47%. The protein content of sorghum cultivar after supplementation with 15 and 30% chickpea was significantly (P # 0.05) increased to 11.78 and 14.55%, respectively. The protein digestibility also increased after fermentation from 13.35 to 30.59 and 40.56% for the supplements, respectively. Further increment in protein content and digestibility was observed when supplemented and unsupplemented samples were fermented for different periods of time. Cooking of fermented samples was found to increase the protein content slightly and decreased digestibility for both supplements. Amino acid content of fermented and fermented and cooked supplements was determined. Supplementation was found to increase the lysine and therionine content. Cooking following fermentation decreased lysine, isoleucine, valine and sulfur containg amino acids.

Item Type: Article
Author Affiliation: Agricultural Research Cooperation, Food Research Centre, Department of Food Chemistry, Shambat, Sudan
Subjects: Plant Physiology and Biochemistry > Biochemistry
Social Sciences > Plant Physiology and Biochemistry > Biochemistry
Divisions: Sorghum
Depositing User: Mr T L Gautham
Date Deposited: 03 Nov 2010 20:39
Last Modified: 29 Dec 2010 20:51
Official URL: http://www.insipub.com/jasr/2010/860-865.pdf
URI: http://eprints.icrisat.ac.in/id/eprint/446

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