玉米秸秆水解的酶法与稀酸法比较

The Enzymatic Hydrolysis and Dilute Sulfuric Acid Hydrolysis of Corn Stalk Compared

探讨玉米秸秆在纤维素酶及稀酸作用下的水解方法,并从水解影响因素(水解时间、温度、底物浓度等)及水解机理上,比较了两种纤维素酶与稀硫酸对玉米秸秆水解特性。结果表明由于酶和酸的水解机理不同,对玉米秸秆的水解影响也不一样,酶水解速度慢,水解得率高,条件温和;稀酸水解速度快,水解得率低,对设备要求高。如果酸和酶结合,则玉米秸秆水解得率有很大的提高。

This paper describes the experiment of hydrolysis of cellulose under enzyme and acid hydrolyzing, the hydrolysis properties of Suhong cellish L and Cellusoft L compared with dilute sulfuric acid from the main affecting factor of hydrolysis （time, temperature, substrate concentration etc. ） and mechanism. The results show that the different mechanism of enzyme and acid hydrolysis result in diverse influence on hydrolyzing corn stalk. The velocity of enzymatic hydrolysis was slower than that of acid hydrolysis, while the yield was much higher. The yield of hydrolyzing corn stalk would be higher if combining enzyme and acid hydrolyzing.