3种阿魏叶提取物的抑菌作用研究  

Antimicrobial activity of leaf extracts from 3 kinds of Ferula

作　　者：高婷婷[1] 余风华[1] 谭勇[1,2] 刘雯霞[1] 

机构地区：[1]新疆石河子大学药学院,石河子832002 [2]新疆特种植物药资源省部共建教育部重点实验室,石河子832002

出　　处：《食品科技》2013年第12期235-237,共3页Food Science and Technology

基　　金：国家自然科学基金(30860022);石河子大学"3152"青年骨干教师项目

摘　　要：采用滤纸片扩散法对新疆阿魏、多伞阿魏和大果阿魏叶的浸提物和醇提物分别进行金黄色葡萄球菌、枯草芽孢杆菌、八叠球菌和大肠杆菌的抑菌研究。结果表明:3种阿魏提取物对大肠杆菌未体现出抑菌效果;3种阿魏叶的醇提取物对金黄色葡萄球菌、枯草芽孢杆菌和八叠球菌均具有较好的抑菌效果,其中多伞阿魏的抑制作用最强;浸提物中新疆阿魏的抑制作用最弱,仅对金黄色葡萄球菌有明显的抑菌效果。在2种提取方法中,阿魏叶醇提液的抑菌能力大于浸提液。Ablation behaviors of silicon carbide （SiC） coated 2D carbon fiber reinforced silicon carbide matrix （designated as 2D C/SiC） composites prepared by chemical vapor infiltration （CVI） were investigated by a continuous wave CO2 laser. The 2D C/SiC specimens were exposed under laser for 0.5 s in ambient air, and the laser powers varied from 500 W to 1500 W. A 3D finite element model was established to calculate the temperature distribution in the laser ablation process. The ablation depth, width and profile were measured by Laser Confocal Microscope （LCM）. The results indicate that the increase of ablation depth follows a linear relation with the increase of laser power, and the increase of ablation width follows a similar trend with the increase of the isotherm diameter of 1712 ℃. The ablated surface can be distinguished into three different regions by scanning electron microscope （SEM） observation, including ablation center, transition zone and ablation fringe. The ablation behaviors of carbon fibers and SiC matrices in different regions were presented and discussed in the study.

关 键 词：阿魏 叶提取物 抑菌作用 

分 类 号：R284.2[医药卫生—中药学]