Amal Kadhim G. Al-Asady
Department of Food Science, College of Agriculture, University of Basrah, Basrah, Iraq
ABSTRACT
Some cheap starchy materials like sorghum grains and wheat bran were degraded by crude glucoamylase of a local isolate of Mucor sp., then Lactic Acid (LA) was produced by a local isolate of L. plantarum using sorghum flour hydrolysate, sorghum starch hydrolysate, soluble starch hydrolysate, wheat bran hydrolysate and date syrup with 10% reducing sugars. The yield of LA increased to 37.2 g/100 reducing sugars by using sorghum flour hydrolysate as a basal medium supplemented with (0.6+0.6)% yeast extract+(NH4)2HPO4 and 0.06% MgSO4.7H2O, reducing sugars was 5%. The fermentation temperature was 30°C/96 h. Results indicated that using hydrolysates mixtures of sorghum flour and wheat bran improved LA fermentation. The yield of LA was 92.5 g by using sorghum flour and 50% wheat bran. Paper chromatography indicated that LA was the unique organic acid in the fermented broth.
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How to cite this article
Amal Kadhim G. Al-Asady, 2012. Production of Lactic Acid by a Local Isolate of Lactobacillus plantarum Using Cheap Starchy Material Hydrolysates. Pakistan Journal of Nutrition, 11: 88-93.
DOI: 10.3923/pjn.2012.88.93
URL: https://scialert.net/abstract/?doi=pjn.2012.88.93
DOI: 10.3923/pjn.2012.88.93
URL: https://scialert.net/abstract/?doi=pjn.2012.88.93
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