【摘要】 以玉米粉为原料进行柠檬酸发酵 ,控制玉米粉液化的 pH6 .0～ 6 .4、液化时间 6 0min和蛋白质含量 0 .4%～ 0 .6 % ,发酵产酸可达 1 7%。同时还探索了液化滤液、滤渣酸败的防腐措施。更多还原

【Abstract】 The fermentation of citric acid by A.niger using corn meal as raw material was carried out. The corn meal was liquefied by α-amylase at pH6.0-6.4 for an hour and then filtered. Moreover the filtrate was added some protein.The maximum yield of citric acid was as high as 17%(w/v) and the conversion rate of glucose to citric acid was 95%.更多还原