李海明　吴水金　李珊珊　黄惠明　李跃森　郑开斌

摘 要：研究香茅精油对空气中真菌抑制作用，为改善人们的居家、工作环境及身体健康状况提供依据。以香茅精油为材料，通过培养基添加香茅精油及室内扩香，将室内微生物轰击到培养基上，观察微生物真菌生长情况。培养基添加香茅精油的抑菌试验结果表明：精油含量0.02%的处理与对照（无添加香茅精油培养基）相比，对真菌的抑制效果差异未达到显著水平，精油含量0.06%、0.12%、0.18%、0.24%与对照相比，对真菌的抑制效果差异均达到极显著水平。室内扩香时长的抑菌试验结果表明：随着时间的延长，空气中的微生物生长缓慢，处理时间从1、2、3、4 h都有明显的抑菌效果，随着时间的延长，在抑菌效果上基本趋于一致。香茅精油对空气中的真菌具有抑制作用，扩香1～2 h，对空气中的真菌具有明显抑制作用。

关键词：香茅精油;抑菌效果;真菌

中图分类号：S 481 文献标志码：A 文章编号：0253-2301（2021）03-0042-04

DOI： 10.13651/j.cnki.fjnykj.2021.03.009

Abstract： The inhibiting effect of citronella essential oil on fungi in the air was studied， so as to provide basis for improving the home environment， work environment and physical conditions of people. In this study， citronella essential oil was used as the material， and the indoor microorganisms were bombarded on the culture medium by adding citronella essential oil and indoor fragrance diffusion， in order to observe the growth of fungi. The results of antibacterial test of adding citronella essential oil to the culture medium showed that compared with the control group （without citronella essential oil being added to the culture medium）， the treatment with the content of 0.02% essential oil had no significant difference in the inhibiting effect on fungi， while compared with the control group， the inhibiting effect of the treatment with the content of 0.06% essential oil， 0.12% essential oil， 0.18% essential oil and 0.24% essential oil on fungi all reached the extremely significant level. The results of bacteriostatic test of the length of indoor fragrance diffusion showed that， with the extension of time， the growth of microorganisms in the air was slow， and the treatment time of 1 h， 2 h， 3 h and 4 h all had obvious antibacterial effect. With the extension of time， the antibacterial effect basically tended to be the same. Citronella essential oil could had inhibiting effect on fungi in the air， and had a significant inhibiting effect on fungi in the air after 1-2 h of fragrance diffusion.

Key words： Citronella Essential oil;Antibacterial effect;Fungi

香茅Cymbopogon citratus DC.Starf是多年生草本植物，歸属于禾本科香茅属，为常见的香草之一，在亚洲地区主要分布在印度、泰国、斯里兰卡、越南等地;在我国香茅主要分布于福建、广东、台湾、海南、贵州、云南等地[1]。根据现有研究表明，香茅精油中的活性成分具有抑菌功效，对霉菌、金黄色葡萄球菌、枯草芽孢杆菌等具有一定的抑制作用[1-2]。室内空气中存在的微生物，主要有真菌、细菌、病毒等[3-4];其中室内真菌主要是从室外带入的，同时室内人群的皮肤以及室内的材料都可以产生真菌。……