文献类型：期刊文献

中文题名：液相色-质谱结合化学计量学用于国产沉香品质分析

英文题名：Quality Analyses of Domestic Agarwood(Aquilaria sinensis) in China by LC-MS Combining with Chemometrics

作者：晏婷婷[1] 陈媛[1] 王茜[1] 尚丽丽[1] 李改云[1]

第一作者：晏婷婷

机构：[1]中国林科院木材工业研究所

年份：2019

卷号：33

期号：6

起止页码：14-18

中文期刊名：木材工业

外文期刊名：China Wood Industry

收录：CSTPCD;;北大核心:【北大核心2017】；

基金：中央级公益性科研院所基本科研业务费专项资金“沉香品质评价和分级技术研究”(CAFYBB2018SY033)

语种：中文

中文关键词：国产沉香;品质分级;液相色谱质谱联用;化学计量学

外文关键词：domestic agarwood;grading;LC-MS;chemometrics

分类号：S781.42;TS67

摘要：乙醇提取物含量与沉香品质有一定相关性,为寻找国产沉香品质的指标化合物,以液相色谱质谱联用(LC-MS)分析不同品质国产沉香乙醇提取物的化学组成特征,并用化学计量学方法分析样品间化学组成差异。结果显示,不同品级沉香的主要成分都是色酮类,根据结构可分为四类;通过偏最小二乘法判别法(PLS-DA)确认了三个对差异分析贡献较大的谱峰,通过特征碎片确认指标化合物为2-(2-苯乙基)色酮衍生物,为沉香品质的判别提供科学依据。
Ethanol extractive contents correlate with agarwood quality.To identify characteristics of domestic agarwood for grading,LC-MS combining with chemometrics were used to profile and compare the compositions in ethanol extracts in this study.The main chemicals detected by LC-MS in the agarwood samples were identified as 2-(2-phenylethyl) chromone derivatives with different structures which could be classified in four grades.The results of PLS-DA(Partial least squares-discrimination analysis) based on 8~17 minutes of TIC(total ion chromatograph) showed that the agarwood sample loadings corresponded to relevant grades and that three potential chemicals related with agarwood quality were identified by characteristic fragment ion peaks.It was expected that the results could provide scientific reference for agarwood grading.