桂皮精油的化学成分及抗菌活性研究

Studies on the chemical components and antibacterial activities of essential oil from cassia bark

文中用水蒸气蒸馏法提取了桂皮精油,采用GC-MS技术分析了桂皮精油的化学成分,并利用提取的精油进行了抗菌活性实验。结果,桂皮精油得率为0.60%,精油化学成分中相对含量较多的组成为桂皮醛(88.11%),桂皮酸(1.77%),咕巴烯(1.63%),对甲氧肉桂醛(3.42%),毒扁豆酚碱-7-溴-甲基氨基甲酸酯(1.05%)等。所得精油乙醇溶液对金黄色葡萄球菌显示抗菌活性,且随着精油溶液浓度的提高,其抗菌活性增强。菌种接种5天后,5%精油溶液试样的抗菌活性为40.5%。

The essential oil was extracted by hydro-distillation method from cassia bark and the chemical composition was determined using the method of GC-MS analysis.Then this essential oil was tested for antibacterial activities.The yield of the essential oil from cassia bark was 0.60 % and the major chemical components and the relative contents in the essential oil had the following order;cinnamic aldehyde（88.11%）,cinnamic acid（1.77%）,α-copaene（1.63%）,para methoxy cinnamic aldahyde（3.42%）,eseroline-7-bromo-methylcarbamate（1.05%）.Studies showed that they have antibacterial effects on staphylococcus aureus,and the efficiency of the antibacterial activity improved as the concentration of the essential oil solution increased.Five days after the vaccination,the antibacterial activity of the 5% solution sample was 40.5%.