文献类型：期刊文献

英文题名：Characteristics of the Water- and Alkali-Soluble Hemicelluloses Fractionated by Sequential Acidification and Graded-Ethanol from Sweet Maize Stems

作者：Peng, Xiaopeng[1,2,3] Nie, Shuangxi[2] Li, Xiaoping[4] Huang, Xiong[1] Li, Quanzi[1,3]

第一作者：Peng, Xiaopeng;彭宵鹏

通信作者：Peng, XP[1];Li, QZ[1];Peng, XP[2];Peng, XP[3];Li, QZ[3]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Guangxi Key Lab Clean Pulp & Papermaking & Pollut, Nanning 530004, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China;[4]Nanjing Forestry Univ, Jiangsu Key Lab Poplar Germplasm Innovat & Variet, Nanjing 210037, Jiangsu, Peoples R China

年份：2019

卷号：24

期号：1

外文期刊名：MOLECULES

收录：;Scopus(收录号：2-s2.0-85059795746);WOS:【SCI-EXPANDED(收录号:WOS:000457150200212)】；

基金：This work was partially supported by the Fundamental Research Funds for the Central Non-profit Research Institution of Chinese Academy of Forestry (CAFYBB2018MA006), the Open Fund of Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China (KF201722), the Open Fund of Jiangsu Key Laboratory for Poplar Germplasm Innovation and Variety Improvement (2018JSPD002), and the National Natural Science Foundation of China (31700578).

语种：英文

外文关键词：sweet maize stems; hemicelluloses; structural features; graded ethanol precipitation; fractionation

摘要：Sweet maize stems were treated with hot water and potassium hydroxide to fractionate hemicellulosic polymers. The results showed that the water-soluble hemicelluloses were mainly composed of glucose (27.83%), xylose (27.32%), and galactose (16.81%). In comparison, alkali-soluble hemicelluloses fractionated by acidification and a graded ethanol solution (10%, 20%, 35%, 50%, 65%, and 80%) were mainly composed of xylose (69.73 to 88.62%) and arabinose (5.41 to 16.20%). More highly branched hemicelluloses tended to be precipitated in a higher concentration of ethanol solution, as revealed by the decreasing xylose to arabinose ratio from 16.43 to 4.21. Structural characterizations indicated that alkali-soluble hemicelluloses fractionated from sweet maize stems were mainly arabinoxylans. The results provided fundamental information on hemicelluloses composition and structure and their potential utilization in the fields of biofuels, biochemicals, and biomaterials.