Saad El-Zemity, Hussien Rezk, Saher Farok, Ahmed Zaitoon
Department of Pesticide Chemistry, Faculty of Agriculture, Alexandria University, Alexandria 21-545, Egypt.
J Zhejiang Univ Sci B. 2006 Dec;7(12):957-62. doi: 10.1631/jzus.2006.B0957.
The acaricidal activities of fourteen essential oils and fourteen of their major monoterpenoids were tested against house dust mites Dermatophagoides pteronyssinus. Five concentrations were used over two different time intervals 24 and 48 h under laboratory conditions. In general, it was noticed that the acaricidal effect based on LC(50) of either essential oils or monoterpenoids against the mite was time dependant. The LC(50) values were decreased by increasing of exposure time. Clove, matrecary, chenopodium, rosemary, eucalyptus and caraway oils were shown to have high activity. As for the monoterpenoids, cinnamaldehyde and chlorothymol were found to be the most effective followed by citronellol. This study suggests the use of the essential oils and their major constituents as ecofriendly biodegradable agents for the control of house dust mite, D. pteronyssinus.
测试了十四种精油及其十四种主要单萜类化合物对屋尘螨（粉尘螨）的杀螨活性。在实验室条件下，在两个不同的时间间隔（24小时和48小时）使用了五种浓度。总体而言，注意到基于精油或单萜类化合物对螨虫的半数致死浓度（LC50）的杀螨效果是时间依赖性的。随着暴露时间的增加，LC50值降低。丁香、马郁兰、藜、迷迭香、桉叶和香菜油显示出高活性。至于单萜类化合物，发现肉桂醛和氯百里酚最有效，其次是香茅醇。本研究表明，精油及其主要成分可作为生态友好型可生物降解剂用于控制屋尘螨（粉尘螨）。
