期刊论文

Process optimization and antibacterial activity of extracting essential oil from Eucalyptus globulus leaves by ultrasonic assisted steam distillation

中文

食品安全质量检测学报

2095-0381

2019

10

13

4358-4364

10.3969/j.issn.2095-0381.2019.13.055

长沙市科技计划项目（kq1701099）~~；

本校为第一机构

目的 初步探明蓝桉叶精油最佳提取工艺及不同提取工艺条件下蓝桉叶精油得率与其抗菌活性的差异性.方法 以桉叶油得率为评价指标,采用超声辅助水蒸气蒸馏法,通过单因素与正交试验确定桉叶油最佳提取工艺.并检验正交试验各组合桉叶油对金黄色葡萄球菌、大肠杆菌和黑曲霉的抑菌效果.结果 桉叶油的最佳提取工艺条件为料液比1:4(g/mL),超声时间25 min,超声功率200 W,蒸馏时间5 h,桉叶油得率为1.51％.而抑菌试验结果表明,不同提取工艺所得桉叶油的抑菌活性存在差异.对金黄色葡萄球菌和大肠杆菌而言,料液比1:6(g/mL),超声时间30 min,超声功率180 W,蒸馏时间5 h时抑菌活性最强,抑菌圈直径分别为(11.92±...

Objective To explore the optimum extraction technology of Eucalyptus globulus oil and the difference between the yield of Eucalyptus globulus oil and its antibacterial activity under different extraction conditions.Methods Taking the yield of eucalyptus oil as the evaluation index, the optimal extraction process of Eucalyptus oil was determined by single factor and orthogonal test by ultrasonic assisted steam distillation.The antibacterial effects of each combination of Eucalyptus oil on Staphylococcus aureus, Escherichia coli and Aspergillus n...