文献类型：期刊文献

中文题名：氯化胆碱/1,4-丁二醇/AlCl_(3)三元低共熔体系提高毛竹预处理效率的研究

英文题名：Improving Pretreatment Efficiency of Moso Bamboo with Ternary Deep Eutectic Solvent of Choline Chloride/1,4-Butanediol/AlCl_(3)

作者：刘旭泽[1,2] 詹云妮[1] 赵梦珂[1] 黄晨[1,2] 邓拥军[1,2] 房桂干[1,2]

第一作者：刘旭泽

机构：[1]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,国家林业和草原局林产化学工程重点实验室,林木生物质低碳高效利用协同创新中心,江苏南京210042;[2]南京林业大学江苏省林业资源高效加工利用协同创新中心,江苏南京210037

年份：2023

卷号：43

期号：3

起止页码：108-114

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2023_2024】；

基金：国家自然科学基金资助项目(32001273);江苏省生物质能源与材料重点实验室基本科研业务费项目(JSBEM-S-202203)。

语种：中文

中文关键词：高原料装锅量;低共熔溶剂;酶水解;木质素

外文关键词：high raw material loading capacity;deep eutectic solvent;enzymatic hydrolysis;lignin

分类号：TQ35

摘要：以毛竹为原料,采用氯化胆碱(ChCl)/1,4-丁二醇(BDO)/AlCl_(3)低共熔溶剂(DES)体系,在90~130℃和固液比1∶4(g∶g)条件下对毛竹进行预处理,探讨了木质纤维高原料装锅量的DES反应体系在不同温度下对毛竹化学组分、酶水解效率和木质素回收率的影响。研究结果表明:随着预处理温度的增加,预处理物料木聚糖和木质素质量分数逐渐降低,葡聚糖质量分数升高,酶水解效率显著提高。温度为110℃时,预处理效果最佳,此时预处理物料回收率为59.24%,葡聚糖、木聚糖回收率分别为91.38%和27.03%,木质素脱除率为69.72%,葡聚糖酶水解得率几乎接近100%,表明ChCl/BDO/AlCl_(3)三元低共熔溶剂体系可以极大提高对毛竹的预处理效率。进一步研究表明:通过有机溶剂溶解及沉淀再生的方法,可回收预处理液中90%以上的木质素,且回收的木质素纯度可达99.26%。通过物料衡算发现毛竹各组分可有效分离与转化。
Bamboo was pretreated by choline chloride(ChCl)/1,4-butanediol(BDO)/AlCl_(3) deep eutectic solvent(DES)system with a solid to liquid ratio of 1∶4(g∶g)at 90-130℃.The effects of DES reaction system with high loading capacity of lignocellulose on chemical composition,enzymatic hydrolysis efficiency,and lignin recovery of moso bamboo were investigated at different temperatures.The results of the research showed that the mass fractions of xylan and lignin in the pretreated substrates decreased gradually with the increase of pretreatment temperature,while the mass fraction of glucan increased,and the enzymatic hydrolysis efficiency increased significantly.When conducting pretreatment at the optimal condition of 110℃,the recovery rate of pretreated substrates was 59.24%,and the recovery rate of glucan and xylan were 91.38%and 27.03%,respectively.The lignin removal ratio was 69.72%,and the glucan enzymatic hydrolysis yield reached almost 100%,indicating that the ChCl/BDO/AlCl_(3) ternary DES system could greatly improve the pretreatment efficiency of moso bamboo.Further research showed that more than 90%lignin in the pretreatment liquid could be recovered by sequential organic solvent dissolution and reprecipitation,and the purity of the recovered lignin had high value of 99.26%.From the mass balance,it was found that each component of moso bamboo could be separated and transformed effectively.