Aspergillus oryzae 3.042 was mutagenized with UV combining LiCl and nystatin-inresistant mutants were screened.All mutants were further screened through repeated solid-substrate fermentations.

• 对米曲霉3.；042进行了紫外线-氯化锂复合诱变；筛选制霉素抗性突变株；并进行固体发酵筛选试验；共筛选出了5株正突变株。