Abstract:

Four different pretreatment methods，namely，diluted sulfuric acid method，sodium hydroxide method，aqueous ammonia method and hydrated lime method，were tested to study the effect on enzymatic hydrolysis of corn stalk with added Tween-80. The results showed that the total reduced sugars of corn stalk treated by sodium hydroxide were 10.7 times more than those of the untreated corn stalk. As is shown by X-ray and IR，the lignin content of corn stalk treated by sodium hydroxide reduced by 62%. Besides，the degree of crystallinity of cellulose decreased.

摘要： 比较了稀硫酸、氢氧化钠、氨水和氢氧化钙4种预处理方法对玉米秸秆吐温-80/酶水解的影响，结果表明：氢氧化钠预处理方法效果最佳，得到的总还原糖产率比未处理时提高了10.7倍。其红外光谱和广角X-射线衍射谱图表明：经氢氧化钠预处理后，玉米秸秆中的木质素含量降低了62%，纤维素的结晶度也有所降低。