The result showed that maltodextrin was the best carbon source, soybean powder and corn steep powder were the best nitrogen sources.
经单因素实验对发酵培养基的组成进行了优化，确定较适碳源为麦芽糊精、较适氮源为黄豆饼粉和玉米浆干粉。
The requirements of different carbon and nitrogen sources of Aspergillus niger ML2 and ML4 were studied for phosphate solubilization in this work.
利用液体发酵实验测定不同的碳源、氮源及碳氮比对两株黑曲霉ML2、ML4溶磷的影响。
Also the fermentation conditions were studied with different carbon sources and nitrogen sources.
同时，改变发酵液中不同氮源和碳源，对突变株的发酵条件进行了比较研究。
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