The results showed that to feed batch culture can enhance enzyme productivity by 7.0 % with high methoxyl pectin as substrate, and by 2 3.5 % with low methoxyl pectin as substrate.
结果表明：通过分批补料对酶产率有提高，以高酯果胶为底物酶产率提高7.0 % ，以低酯果胶为底物酶产率提高2 3.5 % ；
The feed batch high density culture by Bacillus thuringiensis was investigated and the effects of feeding way, feeding composition and feeding time on fermentation were also explored .
研究了苏云金杆菌的补料高密度培养。系统探讨了补料方式、补料成分和补料时间对发酵水平的影响。
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