乐东拟单性木兰花部挥发油的化学成分及其抑菌活性

Chemical Constituents of the Volatile Oil of Parakmeria lotungensis Flower and Its Antibacterial Activities in vitro

采用 GC- MS技术分析了乐东拟单性木兰花部挥发油的化学组成 ,共鉴定了 5 7种成分的化学结构与相对含量 ,占总含量的 85 .5 9%。其中 ,β-蒎烯 (12 .85 % )、D-柠檬烯 (7.78% )、石竹烯 (4.89% )、十氢 - 4 a-甲基 - 1-亚甲基 -7- (1-甲基乙烯基 ) -萘 (4.70 % )为主要成分。此外 ,醇类中 α-杜松醇 (3.6 1% )、1氢 - [1,3]环戊并 [1,2 ]环丙并 -苯(3.5 2 % )、倍半萜含氧衍生物石竹烯氧化物 (3.33% )和 α-蒎烯 (3.2 2 % )也占有较大比例。体外对 4种供试病原菌的抑菌实验表明 。

The compositions of the volatile oil in the flower of Parakmeria lotungensis (Chun et C H. Tsoong) Law were studied by means of GC MS technique, and the chemical structure of 57 constituents that account of 85 59% of total content were identified. The main components were β Pinene(12 85%), d limonene(7 78%), caryophyllene(4 89%). Besides, some sesquiterpenes oxide such as caryophyllene oxide(3 33%),1 H cyclopentacyclopropabenzene(3 52%), α cadinol (3 61%),α pinene(3 22%)contained a large part of fraction in total oil. The antibacterial experiments of the oil had been studied on 4 tested strains in vitro, it showed that the oil had some certain antibacterial activities to Escherichia coli, Salmonella typhi.