[ Objective ] The aim was to improve utilization of stover. [ Method ]The effects of different detergent pretreatments of stover on lactic acid production by stover hydrolysate fermentation was investigated. [ Result ] The results showed that 1.98 g/L lactic acid was produced with the stover hydrolysate as carbon source by fermentation of Rhizopus oryzae and the conversion rate was 5.36％ after 36h. The conversion rates of lactic acid were all increased by the pretreatments of stover with neutral and alkalic detergents. Furthermore, the effect of 2％ soap powder pretreatment was the best, by fermentaion of hydrolysis resolution of the pretreatmented stover, 8.68 g/L lactic acid was obtained after 36h, when fermentation time reached 60h, lactic acid production arrvived at the top ( 10.64 g/L), and the conversion rate was 43.02％. [ Conclusion ] Soap powder pretreatmen was an effective method to stover.%[目的]有效提高秸秆利用率.[方法]研究了不同种类洗涤剂预处理对秸秆酸水解液发酵产乳酸的影响.[结果]未经处理的秸秆,米根霉利用其酸水解液发酵,在发酵36h时,乳酸含量最高为1.98g/L,糖酸转化率为5.36%,而采用中性及碱性洗涤剂对秸秆进行预处理,均能够提高米根霉转化秸秆水解液为乳酸的转化率,其中2%皂粉预处理效果最好,其秸秆酸水解液发酵36h,产乳酸量为8.68g/L,发酵60h,乳酸含量达到最高10.64 g/L,糖酸转化率为43.02%.[结论]皂粉处理是较为理想的一种秸秆预处理方法.
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