芍药花瓣与被斑蝥采食花瓣挥发性成分GC-MS分析

GC-MS Analysis on Volatile Compounds of Peaonia lactiflora Petals after Eaten by Mylabris Speoiosa

摘要:

目的: 野生芍药花瓣与被斑蝥采食花瓣挥发性成分比较分析。 方法: 采用水蒸气蒸馏法提取芍药干燥花瓣挥发油,石油醚浸出法提取新鲜花瓣挥发性物质,GC-MS分析、鉴定其化学成分。 结果: 斑蝥咬食的干燥花瓣挥发油的得率较未被咬食的有明显增高,分别为0.13%和0.06%(mL ·g^-1),斑蝥的采食对芍药花瓣的挥发性成分组分影响不大,但是其相对含量会有所变化。从芍药干燥和新鲜花瓣挥发性物质中分别鉴定出34种和19种化学成分。新鲜花瓣含有更多的分子量小的芳香成分,如苯甲醛,苯乙醛,苯乙醇等。 结论: 斑蝥的采食对芍药花瓣的挥发性成分总量和各组分的相对含量有影响。干燥花瓣和新鲜花瓣的的主要成分变化较大。

Abstract:

Objective: To analysis Peaonia lactiflora Pall. flower petal volatile compounds after eaten by Mylabris speoiosa Pallas. Method: By steam distillation to extract dry petals volatile compounds, petroleum ether soak extract fresh petals volatile compounds, GC-MS analysis, identify the chemical components. Result: The eaten dry flowers volatile compounds rate is obviously higher. It is 0.13% and 0.06% (mL·g^-1), but it is not change the relative content. Dry and fresh flower were identified about 34 and 19 species of chemical composition. Fresh flower contains more small molecular component, such as formaldehyde, benzene, phenylethyl acetaldehyde, etc. Conclusion: The eaten flower petals total volatile compounds and the relative content of each component has affected. The main components of fresh and dry flower petals are different.