發(fā)布時間：2019-07-12 15:15

【摘要】：為研究固態(tài)發(fā)酵玉米芯制備木聚糖的最佳菌酶組合條件,本試驗以木聚糖含量為指標,采用單因素試驗,依次研究單菌發(fā)酵、雙菌發(fā)酵、菌種比例、單酶發(fā)酵、雙酶發(fā)酵、雙酶比例、酶的用量對發(fā)酵產(chǎn)物中木聚糖含量的影響。結果表明:發(fā)酵玉米芯制備木聚糖的最佳菌酶組合條件為:枯草芽孢桿菌與酵母菌比例為1∶9,發(fā)酵時添加纖維素酶量為1000 U/g飼料。在此條件下,木聚糖含量可達1.421 mg/g,與對照組相比顯著提高了257%。
[Abstract]:In order to study the optimum conditions of xylan preparation from corncob by solid-state fermentation, the effects of single-bacteria fermentation, double-bacteria fermentation, strain ratio, single enzyme fermentation, double enzyme ratio and enzyme dosage on xylan content in fermentation products were studied by single factor test with xylan content as index. The results showed that the optimum conditions for the preparation of xylan from corncob were as follows: the ratio of Bacillus subtilis to yeast was 1 鈮，

本文編號：2513789