%0 Journal Article
%T Production of Lactic Acid by a Local Isolate of Lactobacillus plantarum Using Cheap Starchy Material Hydrolysates
%A Amal Kadhim G. Al-Asady
%J Pakistan Journal of Nutrition
%D 2012
%I 
%X 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 30ˇăC/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.
%K lactic acid
%K L. plantarum
%K Lactic acid bacteria
%K glucoamylase
%K fermentation
%U http://docsdrive.com/pdfs/ansinet/pjn/2012/88-93.pdf