山杏壳中纤维素、半纤维素、木质素含量的测定  

Determination of Cellulose,Hemicellulose and Lignin in Apricot Shell LI

作　　者：李霄[1,2,3] 韩鑫 刘侠 张子莹[1] 任国瑜 党睿 马向荣[1,2] 刘晓菊 任晓庆[1] LI Xiao;HAN Xin;LIU Xia;ZHANG Ziying;REN Guoyu;DANG Rui;MA Xiangrong;LIU Xiaoju;REN Xiaoqing(School of Chemistry and Chemical Engineering,Yulin University,Yulin Shaanxi 719000,China;Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization,Yulin Shaanxi 71900,China;School of Chemistry and Environmental Sciences,Shaanxi University of Technology,Xi’an Shaanxi 710000,China)

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000 [2]陕西省低变质煤洁净利用重点实验室,陕西榆林719000 [3]陕西理工大学化学与环境科学学院,陕西西安710000

出　　处：《当代化工》2024年第8期2002-2006,共5页Contemporary Chemical Industry

基　　金：国家自然科学基金(项目编号:21968036);陕西省教育厅项目(项目编号:20JC040);榆林学院联合基金(项目编号:LHJJ16,LHJJ15);榆林学院横向项目(项目编号:2022HX347、2022HX302)。

摘　　要：以榆林市的山杏壳作为研究对象,为了精确测定其主要成分(纤维素、半纤维素和木质素)的质量分数,采用了硫酸与重铬酸钾氧化法、2 mol·L^(-1)盐酸水解法和72%的硫酸法,分别针对上述3种成分进行测定。通过控制单因素变量法,确定了每种方法的最佳条件。在最佳条件下,测得山杏壳中纤维素质量分数为26.10%,半纤维素的质量分数达到33.03%,木质素质量分数为31.22%。榆林市山杏壳中富含纤维素、木质素和半纤维素,是重要的可再生资源。Taking the apricot shell from Yulin city as the research object,in order to accurately determine the mass fraction of its main components(cellulose,hemicellulose and lignin),sulfuric acid and potassium dichromate oxidation method,2 mol·L^(-1) hydrochloric acid hydrolysis method,and 72%sulfuric acid method were used to determine the three components mentioned above,respectively.By controlling the single factor variable method,the optimal conditions for each method were determined.Under the optimal conditions,the mass fraction of cellulose was 26.10%,the mass fraction of hemicellulose was 33.03%,and the mass fraction of lignin in apricot shell was 31.22%.The apricot shell is rich in cellulose,lignin,and hemicellulose,so it is an important renewable resource.

关 键 词：山杏壳 纤维素 半纤维素 木质素 提取方法 

分 类 号：TQ351.01[化学工程] TQ041