文献类型：期刊文献

英文题名：Introducing carboxyl and aldehyde groups to softwood-derived cellulosic fibers by laccase/TEMPO-catalyzed oxidation

作者：Xu, Shiyu[1] Song, Zhanqian[2,3] Qian, Xueren[1] Shen, Jing[1]

第一作者：Xu, Shiyu

通信作者：Qian, XR[1]

机构：[1]Northeast Forestry Univ, Key Lab Biobased Mat Sci & Technol, Minist Educ, Harbin 150040, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[3]State Forestry Adm, Key & Open Lab Forest Chem Engn, Nanjing 210042, Jiangsu, Peoples R China

年份：2013

卷号：20

期号：5

起止页码：2371-2378

外文期刊名：CELLULOSE

收录：;EI(收录号：20133916785744);Scopus(收录号：2-s2.0-84884414760);WOS:【SCI-EXPANDED(收录号:WOS:000324494200013)】；

语种：英文

外文关键词：Fiber engineering; Laccase; TEMPO; Carboxyl; Aldehyde; Reaction pathways

摘要：For more cost-effective and/or value-added utilization of cellulosic fibers in pulp and paper industry, fiber engineering is an important concept. Essentially, fibers can be engineered via various mechanical, chemical, and biological processes. In the current study, the combined use of laccase and TEMPO was applied to introduce carboxyl and aldehyde groups to softwood-derived cellulosic fibers (bleached softwood kraft pulp). The process conditions in preparation of the engineered fibers were optimized. Under the conditions studied, the maximum increases in carboxyl and aldehyde contents were 360 % and 225 %, respectively. The effectiveness of the laccase/TEMPO system could be well explained by the reaction cycles in catalytic oxidation pathways. The findings of the current work may provide useful insights into the enzymatic modification of cellulosic fibers for papermaking applications.