碱催化双螺杆动态挤压预处理小麦秸秆制备发酵用糖的研究  

Preparation of Fermentative Sugar from Wheat Straw by Alkali Catalytic Twin-screw Dynamic Extrusion Pretreatment

作　　者：唐成伦 王松涛[2] 赵恺晨 刘庆国 单军强 陈彦君[3] 朱晨杰[3] 沈才洪[2] TANG Cheng-lun;WANG Song-tao;ZHAO Kai-chen;LIU Qing-guo;SHAN Jun-qiang;CHEN Yan-jun;ZHU Chen-jie;SHEN Cai-hong(Jiangsu Jicui Industrial Biotechnology Research Institute Co.,Ltd.,Nanjing 210032,China;Luzhou Laojiao Co.,Ltd.,Luzhou 646000,China;Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]江苏集萃工业生物技术研究所有限公司,江苏南京210032 [2]泸州老窖股份有限公司,四川泸州646000 [3]南京工业大学,江苏南京211816

出　　处：《江西农业学报》2022年第2期27-35,47,共10页Acta Agriculturae Jiangxi

基　　金：江苏省青年科学基金(BK20210145)。

摘　　要：采用碱催化双螺杆动态挤压预处理技术预处理了小麦秸秆,当碱用量为0.06 g/g干秸秆、保温时间为1 h时,木质素脱除率为80%,纤维素和半纤维素的水解率分别为87.7%和75.2%,总糖得率为83%。对分离提取的木质素进行结构表征发现,其化学结构保留良好,仅有部分木质素结构中的酯键水解,少量H结构单元与G结构单元降解,这种木质素更易于后期高值化利用。通过对不同预处理方式的能量输入及预处理效果进行对比发现,碱催化双螺杆动态挤压技术预处理木质素纤维素类生物质单位处理能量消耗最低,具有良好的工业应用前景。Wheat straw was pretreated by the alkali catalytic twin-screw dynamic extrusion pretreatment technology.When the alkali dosage was 0.06 g/g dry straw,the holding time was 1 h,the lignin removal rate was 80%.The hydrolysis rate of cellulose and hemicellulose was 87.7%and 75.2%,respectively.The total sugar yield was 83%.The physical structure of extracted lignin showed that only part of the ester bonds in the lignin structure were hydrolyzed,and a few H and G structural units were degraded.It was positive for the value-added utilization of lignin.By comparing the energy input and pretreatment effect of different pretreatment methods,it was found that the alkaline catalytic twin-screw dynamic extrusion technology pretreatment method had the lower energy consumption per unit treatment,which had a good industrial application prospect.

关 键 词：动态挤压预处理 小麦秸秆 发酵用糖 木质素 

分 类 号：S511.024[农业科学—作物学]