Wang Meixin, Long Juan, Zhao Jiayue, Li Zhiqiang
International Centre for Bamboo and Rattan, Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China.
International Centre for Bamboo and Rattan, Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China.
Bioresour Technol. 2024 Mar;396:130454. doi: 10.1016/j.biortech.2024.130454. Epub 2024 Feb 14.
The comprehensive separation and utilization of whole components of lignocellulosic materials has received extensive attention in present research. This study focused on the efficacy of alkali treatment for enzymatic saccharification of cellulose based on p-toluenesulfonic acid (p-TsOH) pretreated bamboo substrate. The results showed that the cellulose to glucose conversion yield was 94.69 % under optimized conditions of 0.4 g NaOH/g, 160 °C and 4 h (soaked), which after only 6 h enzymatic hydrolysis time. Alkali lignin recovery was 88.51 %, with potential for conversion to lignin derivatives. The yield of hemicellulose in the pretreated filtrate was 51.85 % after the 4th cycling reuse of p-TsOH. This work has borrowed the advantages of p-TsOH pretreatment of depolymerized hemicellulose from bamboo, combined with a low-priced weak alkali secondary treatment method, which can be effectively applied to the co-production of lignin, xylooligosaccharide, xylose and glucose, and the whole process is green and economically sustainable.
木质纤维素材料全组分的综合分离与利用在当前研究中受到广泛关注。本研究聚焦于基于对甲苯磺酸（p-TsOH）预处理竹材底物的碱处理对纤维素酶解糖化的效果。结果表明，在0.4 g NaOH/g、160 °C和4 h（浸泡）的优化条件下，纤维素到葡萄糖的转化率为94.69%，酶解时间仅6 h。碱木质素回收率为88.51%，具有转化为木质素衍生物的潜力。对甲苯磺酸第4次循环再利用后，预处理滤液中半纤维素的产率为51.85%。本研究借鉴了对甲苯磺酸预处理使竹材半纤维素解聚的优势，结合低价弱碱二次处理方法，可有效应用于木质素、低聚木糖、木糖和葡萄糖的联产，且整个过程绿色且经济可持续。
