文献类型：期刊文献

英文题名：Identification of three Diospysros species using FT-IR and 2DCOS-IR

作者：Ma, Fang[1] Huang, An-min[2] Zhang, Shi-feng[1] Zhou, Qun[3] Zhang, Qiu-hui[1]

第一作者：Ma, Fang

通信作者：Zhang, QH[1]

机构：[1]Beijing Forestry Univ, Moe Key Lab Wooden Mat Sci & Applicat, Beijing 100083, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[3]Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

年份：2020

卷号：1220

外文期刊名：JOURNAL OF MOLECULAR STRUCTURE

收录：;EI(收录号：20202608861019);Scopus(收录号：2-s2.0-85086765549);WOS:【SCI-EXPANDED(收录号:WOS:000573638600002)】；

基金：This research was supported by the grants of National Natural Science Foundation of China (No. 31670564).

语种：英文

外文关键词：D. ebenum; D. philippinensis; D. celebica; Identification; FT-IR; 2DCOS-IR

摘要：Based on the systematic analysis of heartwood and alcohol extractives of D. ebenum, D. philippinensis and D. celebica by the three-step infrared spectroscopy (FT-IR, SD-IR and 2DCOS-IR), the three similar Diospyros wood are successful distinguished. In FT-IR spectra, the principal chemical components of heartwood are characterized for cellulose (the bands at around similar to 1370, similar to 1158, -1034 and similar to 895 cm(-1)), lignin (the bands around similar to 2935, similar to 1510, similar to 1462 and similar to 1426 cm(-1)) and calcium oxalate (peaks at similar to 1615, similar to 1318 and similar to 781 cm(-1)). The correlation coefficient among samples and standard material give the result that D. ebenum is lignin-rich and D. celebica is resin-rich, while D. philippinensis contains more calcium oxalate. In SD-IR spectra, D. philippinensis and D. celebica have peaks at 1731 cm(-1) mean they contain more resin. Besides, the alcohol extracts of D. ebenum possesses stronger peak at 1651, 1632, 1584 and 1388 cm(-1) which can be characterized for naphthalene derivatives component. Through the 2DCOS-IR synchronous spectra, the C-H of lignin (the auto peaks at similar to 1450 and -1460 cm(-1)) of three heartwoods show strong intensity. Lignin shows high thermal sensitivity in D. ebenum, while it is similar sensitive with cellulose in D. philippinensis, but it is slightly lower thermal perturbation than cellulose in D. celebica. Meanwhile, the thermal sensitivity of Si-O and Si-C of alcohol extractives are different in the range of 935-1255 cm(-1). In addition, the difference in thermal perturbation of C=O and C=N of resin and naphthalene derivatives could also be considered as the key factors to discriminate them. This research demonstrated that the FT-IR and 2DCOS-IR could analyze and discriminate confused ebony wood comprehensively. (C) 2020 Elsevier B.V. All rights reserved.