摘要
高效分离竹木质纤维素“三素”(纤维素、半纤维素和木质素)利于竹资源的高值化利用。以原生毛竹竹茎粉为原料,采用对半纤维素和木质素有选择性溶出能力的酸性低共熔溶剂(ADES),高效分离得到竹粗纤维素,并对其进行理化特性研究。结果表明:磷钨酸基ADES对纤维素分离效果较佳,对半纤维素和木质素具有高选择性去除能力。纤维素保留率、半纤维素和木质素去除率分别为99.07%、86.98%和60.75%。相比于原料,经ADES处理得到的产物热稳定性也有明显增强。此外,产物的亲水性与组成两者间表现出显著的相关性,这对于快速测定木质纤维素类物质组成方法的建立具有一定的借鉴意义。
The efficient separation of bamboo lignocellulosic "three components"(cellulose, hemicellulose and lignin) can promote the high value utilization of bamboo resources. Crude cellulose was prepared by ADES with selective dissolution ability for hemicellulose and lignin from native bamboo stem powder and its physicochemical properties were studied. The results showed that phosphotungstic acid-based ADES had the best effect on cellulose fractionation and had high selective removal ability for hemicellulose and lignin. The cellulose retention rate, hemicellulose and lignin removal rate were 99.07%, 86.98% and 60.75%, respectively. Compared with raw material, thermal stability of the product treated with ADES was also notably enhanced. In addition, there was a significant correlation between hydrophilicity of the product and its composition, which had certain exploration and reference significance for the establishment of a method for the rapid determination of the composition of lignocellulosic substances.
作者
肖竹钱
孙宇昊
李佳杰
沙如意
毛建卫
XIAO Zhu-qian;SUN Yu-hao;LI Jia-jie;SHA Ru-yi;MAO Jian-wei(Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing,Zhejiang University of Science and Technology,Hangzhou 310023,Zhejiang,P.R.China;Zhejiang Provincial Key Laboratory of Chemical and Biological Processing Technology of Farm Products,Zhejiang University of Science and Technology,Hangzhou 310023,Zhejiang,P.R.China)
出处
《林产工业》
北大核心
2023年第2期9-15,共7页
China Forest Products Industry
基金
浙江省基础公益研究计划项目(LGC21B060001)
浙江省自然科学基金项目(Q19C160004)。
关键词
酸性低共熔溶剂
竹木质纤维素
理化性质
“三素”拆分
磷钨酸
ADES
Bamboo lignocellulose
Physiochemical properties
"Three components"splitting
Phosphotungstic acid
