摘要
以新疆和田地区'梭梭'和'红柳'肉苁蓉为研究对象,采用气相离子迁移色谱(gas chromatography-ion mobility spectroscopy,GC-IMS)分析两种不同寄主肉苁蓉挥发性物质之间的差异.结果表明:GC-IMS共检测出35种挥发性物质,其中定性出27种挥发性物质,包括醛类8种、醇类5种、酯类4种、酮类1种,以醛、醇类物质为主.'红柳'肉苁蓉和'梭梭'肉苁蓉挥发性物质差异明显.二者主要差异物质为2-苯基乙醛、苯甲醛、(E)-2-庚烯醛、3-甲硫基丙醛、1-己醛、庚醛、3-甲基-2-丁烯醛、乙酸甲酯、乙酸己酯、1-己醇、乙酰妥英、异丁醇、乙酸乙酯.通过主成分分析可以有效区分两种不同寄主肉苁蓉,PC1和PC2累计方差贡献率达到91％.同时,通过构建挥发性物质聚类热图和指纹图谱等手段,为不同寄主肉苁蓉的鉴定和挥发性物质研究提供理论参考.
Abstract
GC-IMS(gas chromatography-ion mobility spectroscopy)was used to analyze the differences between the volatile substances of two hosts of Cistanches deserticola in the Hotan area,Xinjiang.The results showed that 35 volatile substances were detected by GC-IMS,among which 27 volatile substances were identified qualitatively,including 8 aldehydes,5 alcohols,4 esters,and 1 ketone,predominantly aldehydes,and alcohols.There were obvious differences in the volatile substances of Cistanche deserticola between'Red Willow'and'Hoxylon'.The main substances that differed between the two were 2-phenylacetaldehyde,benzaldehyde,(E)-2-heptenal,3-(Methylmercapto)propionaldehyde,1-hexanal,heptanal,3-methyl-2-butenal,acetic acid methyl ester,acetic acid hexyl ester,1-hexanol,3-hydroxy-2-butanone,2-methyl-1-propanol,acetic acid ethyl ester.The two different hosts of Cistanche deserticola could be effectively distinguished by principal component analysis,and the cumulative variance contribution of PC1 and PC2 reached 91％.Meanwhile,by constructing the heat map of volatile substances clustering and fingerprinting,they can provide theoretical references for the identification of different hosts of Cistanche deserticola and the study of volatile substances.
基金项目
重点研发项目(十三五)(2018YFF0213605-2)
天津市林果产业技术体系建设项目(ITTHRS2021000)
新疆维吾尔自治区重点研发任务专项(2022B02030)
营口市博士双创计划()
济宁市重点研发计划(2022NYNS013)
国家科技期刊平台
NSTL
维普
万方数据