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

摘要: 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57种成分的化学结构与相对含量,占总含量的85.59%.其中,β-蒎烯(12.85%)、D-柠檬烯(7.78%)、石竹烯(4.89%)、十氢-4a-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(3.61%)、1氢-1,3环戊并1,2环丙并-苯(3.52%)、倍半萜含氧衍生物石竹烯氧化物(3.33%)和α-蒎烯(3.22%)也占有较大比例.体外对4种供试病原菌的抑菌实验表明,该挥发油对大肠杆菌和伤寒杆菌有一定的抑制或杀灭能力.

Abstract: 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 on₄ tested strains in vitro, it showed that the oil had some certain antibacterial activities to Escherichia coli, Salmonella typhi.