暴马丁香抑菌活性、抗氧化作用研究及微量元素的测定

目的：对暴马丁香的抑菌活性、抗氧化作用进行研究，并测定其微量元素的含量。方法：以暴马香茎皮80% 乙醇提取物为材料，采用滤纸片法对5 种常见细菌的生长抑制活性、最小抑菌浓度(MIC)进行测定，并讨论温度、pH 值及紫外线对提取物抑菌效果的影响。采用DPPH 法测定其抗氧化作用；采用原子吸收分光光度 法测定其微量元素Fe、Mn、Zn、Cu 的含量。结果：对金黄色葡萄球菌的MIC 为1.563mg/mL，对沙门氏菌和巴氏菌的MIC 均为6.25mg/mL。高温、酸性环境等对抑菌作用均无明显影响。其提取物50% 抑制浓度(IC50)为0.042mg/mL。微量元素含量Fe 为880.5μg/g、Mn 为26.03μg/g、Zn 为60.9μg/g、Cu 为10.13μg/g。结论：暴马丁香茎皮有着良好的抑菌效果及较强的抗氧化作用，其微量元素含量较高，具有很好的开发价值。

Ethanol Extract of Syringa reticulate:Evaluation of Antibacterial Activity and Antioxidant Activity and Analysis of Trace Elements

Objectives:To evaluate the antibacterial activities of 80% ethanol extract of Syringa reticulate stem bark against 5 common bacteria and its antioxidant activity and analyze trace elements.Methods:The minimal inhibitory concentrations(MICs) of Syringa reticulata extract against bacteria tested were determined by filter paper method.The effects of temperature,pressure,pH and ultraviolet irradiation on antibacterial activity of the extract were also investigated.DPPH free radical scavenging assay was used for...