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中文摘要：
本试验以蚕沙为原料，利用米曲霉发酵生产果胶酶，通过单因素试验和正交设计试验对产酶条件进行了优化，试验结果显示：在培养基初始pH为自然，蚕沙添加量为4%，接种量4%，发酵温度36℃，发酵时间96 h的培养条件下，测得酶活为131.3 U/mL，比初始培养条件的酶活力提高了229%。
英文摘要：
In this experiment,silkworm faeces was used as fermentation raw material for pectinase production with Aspergillus oryzae.Based on the single factor and orthogonal design experiments,the optimal combinations were confirmed as follow：initial pH of medium was nature,the silkworm faeces content was 4%,inoculum concentration was 4%,which was culture on the shake bed at 36℃for about 96 h,and under the optimized conditions,the enzyme activity was 131.3 U/mL, 229%higher than that of the initial fermentation conditions.
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