WANG Chun ling,LI Xiao long,HU Zeng hui,et al.Daytime Variation of Floral Scent of Prunus davidiana Carr.[J].HEILONGJIANG AGRICULTURAL SCIENCES,2015,(03):55-60.[doi:10.11942/j.issn1002-2767.2015.03.0055]
山桃花香气的日变化规律
- Title:
- Daytime Variation of Floral Scent of Prunus davidiana Carr.
- 文章编号:
- 10022767(2015)03005506
- Keywords:
- Prunus davidiana Carr.; daytime variation; floral scent; ATDGC/MS
- 分类号:
- S688
- 文献标志码:
- A
- 摘要:
- 为了揭示山桃盛开期香气的日变化规律,采用活体植株动态顶空采集法收集一天中不同时间(6∶00、9∶00、12∶00、15∶00、18∶00、21∶00)山桃花释放的香气,再利用自动热脱附气相色谱/质量色谱联用技术(ATDGC/MS)鉴定花香成分、并分析其释放量。结果表明:山桃花香成分中共检测出43种挥发性物质,在化学结构上分别属于苯形烃类,醇类、醛类、萜烯类、酮类、脂肪烃类、酯类和其它类,共8大类。不同时间点,山桃花香释放的化合物种类和数量不同,花香成分的种类随时间呈现出逐渐增加的趋势,而释放量则表现出先增加后减少的规律,总释放量在15∶00达到最高。在所有的化合物中,1,3-二甲基苯、2-乙基-1-己醇、乙苯、对二甲苯和甲基辛醚是所有时间点共有的主要挥发物质,释放量也较高,从而可推断这些化合物是山桃盛花期香气的主要成分。
- Abstract:
- In order to explore the daytime variation pattern of floral scent emitted from Prunus davidiana Carr.at the fullbloom stage,using dynamic headspace method,the floral scent was collected at different time points(6∶00,9∶00,12∶00,15∶00,18∶00,21∶00),the components and release amounts were analyzed by ATDGC/MS technique.The results showed that 43 volatile compounds were detected,belonging to 8 volatile categories,including benzenoid and derivative,alcohol,aldehyde,terpenoid,ketone,fatty hydrocarbon,ester and others.The total release amount firstly increased,and then decreased along with time,and reached the peak at 15∶00.Among the components,1,3-dimethylbenzene,2-ethyl1-hexanol,ethylbenzene,p-xylene and methyl-octyl-ether showed relatively higher release amounts,which were thought as the main components of the floral scent emitted from P.davidiana Carr.at the fullbloom stage.
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备注/Memo
北京市教育科技提升计划资助项目(PXM2013014207000079,PXM2014014207000081);
北京市农业科技资助项目(20130113)