Hydorlyzed cottonseed protein can be used as the nitrogen source of fermentation medium.
棉籽水解蛋白可作为菌体发酵氮源。
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。
Result:The results showed that suitable nitrogen source rate can improve level of fermentation.
结果：试验表明，合适的氮源比例能够提高发酵水平。
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