轻工学报2026，Vol.41Issue(4)：13-28,16.DOI:10.12187/2026.04.002
基于GC-IMS与电子感官的不同产地百里香特征风味物质分析
Analysis of characteristic flavor compounds in Thymus mongolicus Ronn.from different origins based on GC-IMS and electronic senses
摘要
Abstract
[Objective]To elucidate the flavor differences of Thymus mongolicus Ronn.from different origins and identify their key aroma compounds.[Methods]Gas chromatography-ion mobility spectrometry(GC-IMS)combined with electronic nose and electronic tongue was used to analyze the volatile compounds in Thymus mongolicus Ronn.samples from three origins:Luoyang(Henan),Kunming(Yunnan),and Guangzhou(Guangdong).Odor activity values(OAV)were then employed to screen the characteristic aroma compounds.[Results]A total of 101 compounds were identified,predominantly alcohols(23),aldehydes(19),and ketones(19).Both the number and total content of volatile compounds in Thymus mongolicus Ronn.from Henan and Guangdong were higher than those from Yunnan.Significant differences in the contents of characteristic aroma compounds were observed among samples from different origins.Eighteen common characteristic aroma compounds meeting both VIP>1 and OAV≥1 were identified,notably thymol,(Z)-2-hexenal,methyl isovalerate-D,and(E)-2-hexenal.Yunnan samples showed higher relative contents of alcohols,ketones,and heterocyclic compounds,with a relatively balanced aroma;Henan samples had the highest contents of phenols,aldehydes,and sulfur-containing compounds,accompanied by pronounced bitterness and astringency;Guangdong samples were rich in alkenes and esters,exhibiting prominent umami and saltiness.Geographical and climatic conditions significantly influenced the contents of characteristic flavor compounds.A significant positive correlation was found between latitude and(E)-2-hexenal,whereas a significant negative correlation was observed between latitude and isobutyraldehyde.In addition,higher temperatures promoted the accumulation of methyl isovalerate-D.[Conclusion]GC-IMS combined with electronic sensory techniques can rapidly discriminate Thymus mongolicus Ronn.from different origins,offering a valuable reference for the traceability and further application of its characteristic flavor compounds.关键词
百里香/气相色谱-离子迁移谱/电子鼻/电子舌/挥发性物质/气味活度值Key words
Thymus mongolicus Ronn./gas chromatography-ion mobility spectrometry(GC-IMS)/electronic nose/electronic tongue/volatile compounds/odor activity value(OAV)分类
轻工纺织引用本文复制引用
陈浩冉,冯文宁,刘伟,王刘胜,李欣燕,李媛媛,赵铭钦..基于GC-IMS与电子感官的不同产地百里香特征风味物质分析[J].轻工学报,2026,41(4):13-28,16.基金项目
河北中烟2024年项目(2024130000340126) （2024130000340126）
中国烟草总公司重大科技项目(110202201036(XJ-07)) （110202201036(XJ-07）
河南省重点研发与推广专项(科技攻关)项目(262102111063) （科技攻关）
