Abstract
In order to investigate characteristics of Lactobacillus rhamnosus on lactic acid fermentation using different substrate, in this study, saccharification liquid obtained during wet oxidation blasting of straw were used as substrate, conversion reducing sugar to lactate by Lactobacillus rhamnosus was studied and compared with fermentation using glucose as substrate, The results indicated that Lactobacillus rhamnosus could utilize reducing sugar in saccharification liquid obtained during wet oxidation blasting of straw effectively. The highest efficiency of reducing sugar conversion (92.45%) appeared when concentration of reducing sugar as substrate was 20mg/mL; conversion rate of reducing sugar decreased as increasing of sugar concentration. Fermentation of saccharification liquid obtained during wet oxidation blasting of straw to lactic acid by Lactobacillus rhamnosus had optimal effects in the first 48h of incubation.
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