结论随着洛伐他汀产生菌的分子、细胞水平基础研究的加强，其发酵工艺的优化将更有意义。

Conclusion With the advances of basic research about fungi producing lovastatin in the molecule and cell level, the optimization of lovastatin fermentation technology shows more significance.

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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 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.

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产物分析结果表明：采用优化工艺进行发酵，发酵后稻草粉的纤维素含量为22.34%；粗蛋白含量达22.08%，可溶性糖含量为3.87%。

The analysis of the fermented product showed that the content of cellulose in straw powder was 22.34%, crude protein 22.08% and soluble sugar 3.87% after fermentation by using optimized process.

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