文献类型：期刊文献

英文题名：Chemical compositions, infrared spectroscopy, and X-ray diffractometry study on brown-rotted woods

作者：Li, Gai-Yun[1] Huang, Luo-Hua[1] Hse, Chung-Yun[2] Qin, Te-Fu[1]

第一作者：李改云

通信作者：Qin, TF[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]USDA Forest Serv, So Res Stn, Pineville, LA 71360 USA

年份：2011

卷号：85

期号：3

起止页码：560-564

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20111913965644);Scopus(收录号：2-s2.0-79955656594);WOS:【SCI-EXPANDED(收录号:WOS:000291119900011)】；

基金：The financial support of National Key Technologies R&D Program for the 11th Five-Year Plan (project number: 2006BAD18B1002 and 2006BAD03A16) are gratefully acknowledged.

语种：英文

外文关键词：Brown-rot decay; Chemical component; Alkali solubility; Crystallinity; FTIR

摘要：The effect of brown-rot decay on the chemical composition and crystallinity of Masson pine was studied by exposing it to Wolfiporia cocos (Schwein.) Ryvarden and Gilbn. for durations of up to 15 weeks in the field. The holocellulose content, alpha-cellulose content, and wood crystallinity decreased slowly in the initial stage, followed by a significant reduction during the late stage. Pentosans did not have a significant reduction until 15-week decay, indicating that pentosans were degraded much more slowly than the cellulose. Strong correlations between the holocellulose and lignin content and alkali solubility, wood crystallinity, and IR band height ratio indicated that different wood properties affected each other during the degradation process. The results indicated that the slight degradation of amorphous cellulose and hemicellulose formed the entrance points for W. cocos to attack crystalline cellulose, and led to the serious degradation of the cell wall. (C) 2011 Elsevier Ltd. All rights reserved.