citric acid fermentation 柠檬酸发酵
citric acid fermentation liquid 柠檬酸发酵液
citric acid fermentation process 柠檬酸发酵过程
The effects of inoculums, fermentation temperature and time, and nitrogen source on production of citric acid from aged paddy rice by liquid-state fermentation of Aspergillus niger were studied.
研究了接种量、发酵温度与时间、氮源等因素对以陈化稻米为原料，黑曲霉液态发酵法生产柠檬酸的影响，并优化了工艺。
The kinetics of citric acid fermentation process was studied.
研究了柠檬酸发酵过程的动力学。
Citric acid is an important organic acid and mainly produced by fermentation method.
柠檬酸是一种重要的有机酸，主要通过发酵法生产。
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