文献类型：期刊文献

中文题名：竹材乙醇液化制备乙基糖苷及酚类物质

英文题名：Preparation of Ethyl Glycosides and Phenolic Products by Pressurized Liquefaction of Bamboo Biomass

作者：马艳[1] 谭卫红[1] 冯国东[1] 徐俊明[1,2] 王奎[1] 蒋剑春[1,2]

第一作者：马艳

机构：[1]中国林业科学研究院林产化学工业研究所;[2]生物质化学利用国家工程实验室;[3]国家林业局林产化学工程重点开放性实验室:江苏省生物质能源与材料重点实验室,江苏南京210042;[2]江苏强林生物能源材料有限公司,江苏溧阳213364

年份：2018

卷号：38

期号：3

起止页码：63-68

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2017】；CSCD:【CSCD2017_2018】；

基金：国家自然科学基金重点项目资助(31530010)

语种：中文

中文关键词：竹材;液化;糖苷;酚类物质

外文关键词：bamboo biomass;liquefaction;glycosides;phenolic compounds

分类号：TQ35

摘要：以乙醇为液化剂,浓硫酸为催化剂,在体积250 mL的高温高压反应釜中对竹粉进行液化,考察了不同反应条件对竹粉液化的影响,并对液化产物进行中和、逐级分离等处理。液化结果表明:在催化剂浓H_2SO_4用量5%、反应时间30 min、反应温度180℃条件下,竹粉液化率为69.67%,产物中糖苷得率为39.86%,酚类物质得率为20.7%。液化产物逐级分离得到乙基糖苷及3种酚类物质两类平台化合物,其GC-MS分析结果表明:3种酚类物质的主要成分为2,6-二甲氧基苯酚,3,5-二甲氧基-4-邻羟基苯乙酸,4-烯丙基-2,6-二甲氧基苯酚和绵马酚等,约占酚类物质总量的80%;糖苷中主要包含五碳糖苷(呋喃糖苷)和六碳糖苷(吡喃葡萄糖苷和半乳糖苷),占糖苷总量的88.62%。
The liquefaction of bamboo biomass was investigated using ethanol as solvent with H2 SO4 as catalyst in a 250 mL autoclave. The effects of different reaction conditions on the bamboo liquefaction were investigated. The results showed that optimum liquefaction conditions were catalyst dosage 5%,reaction temperature 180 ℃,reaction time 30 min. Under the circumstances,the yield of ethyl glycoside and phenolic products were 39.86% and 20.7%,respectively,with liquefaction ratio of 69. 67%. The liquefied mixture was further separated by neutralization and step-wise separation process. Two platform chemicals,ethyl glycosides and phenolic products were obtained. The main compositions of phenolic products identified by GCMS were 2,6-dimethoxyphenol,3,5-dimethoxy-4-hydroxyphenylacetic acid,4-allyl-2,6-dimethoxyphenol,and aspidinol et al,which accounting for 80% of the phenolic products. Five carbon sugars（ furan glycosides） and six carbon sugars（ glucopyranose and galactopyranoside） were the predominant products in glucosides,which accounting for 88.62% of the glycosides.