大花栀子植物挥发物成分测定及其日变化分析

Composition and diurnal variation analysis of volatile organic compounds in Gardenia jasminoides form.grandiflora

关键词:  大花栀子  挥发物  日变化  TDS GC/MS技术

Key words:  Gardenia jasminoides form.grandiflora  VOCs  diurnal variation  TDS GC/MS

摘要:

为探究大花栀子植物挥发物成分组成及其一天内早、中、晚的差异，采用热脱附气质联用技术对其进行香气成分的分析。结果表明：全天从其花朵中共鉴定出62种成分，主要为萜烯类、酯类、醇类物质，且不同时间其成分差异显著，如早、中、晚3个时间段，β 蒎烯相对含量分别为1.93%、1.69%、8.81%，顺式 β 罗勒烯分别为28.22%、4.35%、16.47%。3 蒈烯（3.45%）、异丁子香酚（0.21%）等只在早上检出；月桂烯（038%）、伞花烃（2.46%）等只在晚上检出；芳樟醇、金合欢烯等在早上和午间两个时间段相对含量较高，而在晚上却未检测出。从植物VOCs角度结合其日变化动态，为大花栀子园林配置及其综合开发利用提供理论依据。

Abstract:

The constituents and the variation during daytime (early in the moring，at noon，in the evening) of volatile organic compounds (VOCs) in Gardenia jasminoides form.grandiflora were studied. The VOCs were identified with the thermal desorption system gas chromatography/mass spectrometer technique TDS GC/MS. 62 VOCs were identified and mainly as terpenoids，esters，alcohols. The results showed that diurnal variation of VOCs were significant. Eg: relative content (in the moring，at noon，in the evening) of β Pinene were 1.93%，1.69% and 8.81% respectively. That of cis β Ocimene were 28.22%，4.35% and 16.47% respectively. 3 Carene (3.45%) and Isoeugenol (021%) could be found barely in the moring. Myrcene (0.38%) and p Cymene (2.46%) could be seen only in the evening. Content of Linalool and Farnesene was higher in early and middle of daytime but the two were not be found in the evening. The research might offer theory basis for landscape application and overall utilization of Gardenia jasminoides form.grandiflora by analysis of VOCs and diurnal variation.