食品工业科技2017，Vol.38Issue(23)：100-103,109,5.DOI:10.13386/j.issn1002-0306.2017.23.020
利用碱-酶耦合法预处理竹粉制备羧甲基纤维素钠
Preparation of sodium carboxymethyl cellulose by pretreatment of bamboo powder with alkali enzyme coupling method
摘要
Abstract
The bamboo powder was pretreated to increase the product's cellulose content,then the sodium carboxymethyl cellulose(CMC)was prepared by the pretreated material.The process of alkali-cellulase coupling method were as follows:bamboo powder 4 g,5％ NaOH 40 mL,alkali hydrolysis at 50 ℃ for 1 h.After vacuum filtration,adjusted pH5.5,adding 400 U/mL cellulase solution 30 mL,then the enzymatic reaction kept at 49 ℃ for 30 min.After the process,the content α-cellulose of the treated bamboo powder was 84.1％,and the viscosity of the 2％ CMC solution made from this material attained 162 mPa·s,the degree of substitutin (DS)was 0.95.The infrared spectroscopy showed that the product had characteristic peak of carboxymethyl group,scanning electron microscopy showed that the product had salt characteristics.There is less environmental pollution and relatively low cost by adopting the bio-chemical coupling method in the pretreatment of raw materials,and it would promote the development of green economy and provide a new way for the preparation of CMC.关键词
羧甲基纤维素钠/竹粉/纤维素/碱-酶耦合/制备Key words
sodium carboxymethyl cellulose/bamboo powder/cellulose/alkali-cellulase method/preparation分类
轻工纺织引用本文复制引用
唐霞,叶杭钰,陈嘉诚,刘家辉,蔡王芝,陈蔚青..利用碱-酶耦合法预处理竹粉制备羧甲基纤维素钠[J].食品工业科技,2017,38(23):100-103,109,5.基金项目
浙江省公益性技术应用研究计划项目(2015C32036) （2015C32036）
浙江省大学生科技创新项目(2017R421022). （2017R421022）
