With cellulose hydrolyte as raw material to ferment citric acid by Aspergillus niger at constant temperature and under oscillation temperature were discussed and compared.

麦草经碱--蒸煮脱木后得到纤。以纤解该纤后制得的纤解波为原料，在黑曲霉的作用下发酵制取柠檬酸。