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投稿时间:2019-05-29
投稿时间:2019-05-29
中文摘要: 采用同时蒸馏-萃取法(simultaneous distertraction extraction,SDE)提取白及花挥发性物质,通过气相色谱-质谱联用法(gas chromatography-mass spectrometery,GC-MS)和气相色谱-嗅闻测量法(gas chromatography-olfactometer,GC-O),开展白及花4 种样品的挥发性成分和气味特征的研究。GC-MS 分析表明,白及花中共鉴定出71 种9 类挥发性成分,主要包括醇类13 种(18.31%),醛类16 种(22.54%),酯类8 种(11.27%)。这些化合物的含量,从花蕾期到展瓣花期大多呈现明显增加,而酯类化合物含量则呈现下降。GC-O 结合感官评价,白及花挥发性成分的气味特征呈现为青草气、花香气、果香气和药香气等,其关键气味化合物由正己醛、壬醛、芳樟醇和愈创木酚等组成。
Abstract:Bletilla striata flower volatiles were extracted by simultaneous distillation-extraction (SDE).Gas chromatography-mass spectrometry(GC-MS)and gas chromatography-olfactory(GC-O)were used to study the volatile components and odor characteristics of four samples of B.striata flower .GC-MS analysis showed that 71 volatile components of 9 types were identified in B.striata flowers,which mainly includes 13 kinds of alcohols (18.31%),16 kinds of aldehydes (22.54%),8 kinds of esters (11.27%).The content of most of these compounds increased significantly from the flower bud stage to the flowering stage,while the ester compound content decreased.GC-O combined with sensory evaluation showed that the odor characteristics of volatile components in B.striata flowers were presented as grass aroma,flower aroma,fruit aroma and herb aroma,etc;and the key odor compounds were composed of n-hexanal,furfural,linalool and guaiacol.
keywords: Bletilla striata flower volatile components gas chromatography-mass spectrometery(GC-MS) gas chromatography-olfactometer(GC-O) simultaneous distertraction extraction(SDE)
文章编号:201921030 中图分类号: 文献标志码:
基金项目:中央财务部中医药部门公共卫生服务专项“全国中药资源普查项目”(财社[2017]66 号);陕西省农业科技创新与攻关项目(2016NY-196)
作者 | 单位 |
刘珍珍,苏莹,张斌,陈小华,李会宁,杨培君 | 1.陕西理工大学生物科学与工程学院,陕西汉中723001;2.陕西省留坝县中药材发展办公室,陕西汉中723001;3.陕西理工大学陕西省资源生物重点实验室,陕西汉中723001 |
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