School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Road, Wuhan 430081, PR China.
School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Road, Wuhan 430081, PR China; HuBei Province Key Laboratory of Coal Conversion and New Carbon Materials, Wuhan University of Science and Technology, Wuhan 430081, PR China.
Bioresour Technol. 2018 Oct;265:464-470. doi: 10.1016/j.biortech.2018.06.038. Epub 2018 Jun 14.
In the present study, a sodium hydroxide-methanol solution (SMs) pretreatment of corn stover was described to overcome biomass recalcitrance for the first time. Effects of sodium hydroxide loading, solid-to-liquid ratio, processing time and temperature on enzymatic saccharification were studied in detail. The SMs pretreatment could significantly enhance the enzyme accessibility of corn stover, minimize the degradation of sugar polymers, and decrease the energy consumption. 97.5% glucan and 83.5% xylan were preserved in the regenerated corn stover under the optimal condition. Subsequent enzymatic digestibilities of glucan and xylan reached 97.2% and 80.3%, respectively. The enzyme susceptibility of the regenerated samples was explained by their physical and chemical characteristics. This strategy provides a promising alternative for better techno-economic of the lignocelluloses-to-sugars routes.
本研究首次描述了一种氢氧化钠-甲醇溶液（SMs）预处理玉米秸秆的方法，以克服生物质的抗降解性。详细研究了氢氧化钠负载量、固液比、处理时间和温度对酶解的影响。SMs 预处理能显著提高玉米秸秆的酶可及性，最大限度地减少糖聚合物的降解，并降低能耗。在最佳条件下，再生玉米秸秆中保留了 97.5%的葡聚糖和 83.5%的木聚糖。随后，葡聚糖和木聚糖的酶解率分别达到 97.2%和 80.3%。再生样品的酶易感性可通过其物理和化学特性来解释。该策略为提高木质纤维素制糖路线的技术经济性提供了一种有前景的替代方案。
