Optimization of lactic acid production from food waste by the saccharification of Bacillus subtili
In order to reduce the costs of production and increase the lactic acid yields,this research adopts Bacillus subtilis to substitute enzymes.The method used in the study is two-phase fermentation - inoculate Bacillus subtilis to food waste to produce sugar,and then inoculate Lactobacillus to food waste to yield lactic acid.87.22 g l-1 of total sugar can be obtained from non-autoclaved food waste in 30 h of saccharification at 40 centigrade.After two-phase fermentation,the optimal lactic acid concentration was 50.77g/L.The results indicate that two-phase fermentation is better than synchronous saccharification fermentation.
Food waste Lactic acid Bacillus subtilis Saccharification
Liu Yingying Wang Qunhui Chen Liwei Wang Xiaoqiang Wang Juan
School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083,China
国际会议
哈尔滨
英文
1080-1083
2010-07-24（万方平台首次上网日期，不代表论文的发表时间）