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Effect of removing hemicellulose and lignin synchronously under mild conditions on enzymatic hydrolysis of corn stover
Fuel Processing Technology ( IF 7.5 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.fuproc.2020.106407
Shengxin An , Wenzhi Li , Fengyang Xue , Xu Li , Ying Xia , Qiyu Liu , Liang Chen , Hasan Jameel , Hou-min Chang

Abstract P-toluene sulfonic acid (PTSA) was utilized to pretreat corn stover. Changes in morphology and structure of untreated and pretreated samples were analyzed by ESEM, TEM, BET, XRD and SXT. The characterization results demonstrated that PTSA pretreatment could markedly improve cellulase accessibility to cellulose because of the removal of lignin and hemicellulose simultaneously. The maximum glucose yield (67.2%) with an enzyme loading of 5FPU•g−1 substrate was achieved after the sample was the pretreated at 80 °C for 10 min with 71.0 wt% PTSA. P-toluene sulfonic acid pretreatment was a valid method to improve the enzymatic hydrolysis performance of cellulose in corn stover at low reaction temperature with a short reaction time.

中文翻译:

温和条件下同步去除半纤维素和木质素对玉米秸秆酶解的影响

摘要 利用对甲苯磺酸(PTSA)对玉米秸秆进行预处理。通过 ESEM、TEM、BET、XRD 和 SXT 分析了未处理和预处理样品的形貌和结构变化。表征结果表明,由于同时去除木质素和半纤维素,PTSA 预处理可以显着提高纤维素酶对纤维素的可及性。将样品在 80 °C 下用 71.0 wt% PTSA 预处理 10 分钟后,在酶负载为 5FPU•g-1 底物的情况下获得最大葡萄糖产量 (67.2%)。对甲苯磺酸预处理是提高玉米秸秆中纤维素酶水解性能的有效方法,反应温度低,反应时间短。
更新日期:2020-07-01
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