摘要
建立高效液相色谱-串联三重四极杆飞行时间质谱结合Qu ECh ERS前处理技术对五味子中木脂素成分进行快速筛查测定的方法。优化Qu ECh ERS前处理条件,采用Xbridge BEH C18色谱柱分离,梯度洗脱,数据依存获取高分辨质谱检测模式,依据目标物的一级母离子的精确质量数、同位素丰度比二级离子的精确质量数和色谱保留时间等信息定性定量分析五味子醇甲五味子甲素中木脂素成分。结果表明:3个特征木脂素化合物检测限低(0.3～1.5μg/L),线性关系良好(R2≥0.999 6);同时利用木脂素类化合物XIClists表可快速筛查鉴定样品中木脂素分布情况。
An analytical method using quick,easy,cheap,effective,rugged and safe(QuEChERS)pretreatment combined with high performance liquid chromatography-quadrupole-time of flight mass spectrometry(HPLC-Q-TOF-MS)was established for the quick screening of lignanoids in Schisandra chinensis.Sample pretreatment conditions were optimized.Chromatographic separation was accomplished on an Xbridge BEH C18 column with gradient elution.The mass spectrum was acquired by information dependent acquisition mass spectrometry(IDA-MS).The qualitative and quantitative analyses were based on the accurate masses of parent ions and isotopic patterns,and the accurate masses of fragment ions as well as a priori known retention times.The results showed that the limits of detection(LODs)for the three standards were within the range of 0.3–1.5μg/L,and calibration curves offered satisfactory linearity(R2≥0.999 6)in a wide linear range.Lignanoids in S.chinensis samples could be quickly identified by searching in the high-resolution mass spectral library XIClists developed in this study.
作者
丁博
陈文锐
王志元
谢建军
曾广丰
王璐
佘志刚
DING Bo;CHEN Wenrui;WANG Zhiyuan;XIE Jianjun;ZENG Guangfeng;WANG Lu;SHE Zhigang(Guangdong Inspection and Quarantine Technology Center,Guangdong Entry-Exit Inspection and Quarantine Bureau,Guangzhou 510623,China;School of Chemistry,Sun Yat-sen University,Guangzhou 510275,China)
出处
《食品科学》
EI
CAS
CSCD
北大核心
2018年第8期160-166,共7页
Food Science
基金
广州市科技创新发展专项(201300000062)
广东省省级科技计划项目(2016A040403091)
作者简介
第一作者简介:丁博(1985—),男,博士后,研究方向为食品中未知物的筛查鉴定。E-mail:dingbo@mail2.sysu.edu.cn
