Starch by-products digestion from sorghum Algerian cultivars with a great potential for sorghum in livestock and animal feeds

Author : SOUILAH Rachid, BELHADI, Badreddine, KHOUDJA, Elkhalil, BEN EL AAKRI, Sara,DJABALI, Djaffar ,NADJEMI, Boubekeur

Abstract :The aim of the present study was to assess the nutritive value of by-products obtained after sorghum starch extraction, as dietary starch from feed grains. We use small-scale laboratory steeping in NaOH, and wet-milling process of starch extraction from sorghum whole grain cultivated in the Algeria (Tidikelt and Hoggar region). The kinetic of the starch digestion in sorghum meal and by-products was studied. The in vitro starch digestion was determined according to the modified method of Goni et al. (1997) by α-amylase (type VI.B from porcine pancreas) and amyloglucosidase from Aspergillus niger enzymes. Five by-products differing in their particle sizes and starch contents were collected. The substrates from whole grain meal, prepared by dry milling, and from by-products differed in their in vitro starch digestion. The mean values for kinetic parameters ranged from 0.0066 to 0.0147 min-1 for the rate constant (k), from 53.66 to 98.58% for the starch hydrolysis at infinite time (C∞) and from 6.06×103 to 8.47×103 %.min for the area under the hydrolysis curve (AUC). Generally, a high digestibility of by-products of sorghum starch isolation with a great potential for sorghum in livestock and animal feeds are considered in this work.

Keywords :Sorghum, Starch digestion, Animal feed.

Conference Name :International Conference on Biotechnology, Bioinformatics and Biomedical Life Sciences (ICBBBLS-24)

Conference Place Istanbul, Turkey

Conference Date 25th Dec 2024