South African Medical Research Council, 491 Ridge Road, Overport, Durban 4001, South Africa.
Malar J. 2010 Oct 28;9:301. doi: 10.1186/1475-2875-9-301.
This study was initiated to establish whether any South African ethnomedicinal plants (indigenous or exotic), that have been reported to be used traditionally to repel or kill mosquitoes, exhibit effective mosquito repellent properties.
Extracts of a selection of South African taxa were tested for repellency properties in an applicable mosquito feeding-probing assay using unfed female Anopheles arabiensis.
Although a water extract of the roots of Chenopodium opulifolium was found to be 97% as effective as DEET after 2 mins, time lag studies revealed a substantial reduction in efficacy (to 30%) within two hours.
None of the plant extracts investigated exhibited residual repellencies >60% after three hours.
本研究旨在确定南非是否有任何传统上被用来驱蚊或灭蚊的草药(本地或外来)具有有效的驱蚊特性。
采用未喂食的雌性按蚊进行适用于蚊子取食探测的实验,对选择的南非分类群的提取物进行驱蚊性能测试。
虽然在 2 分钟后,藜科植物 Opulifolium 的根的水提取物的有效率达到了 DEET 的 97%,但时间滞后研究表明,在两小时内,其效力大幅下降(至 30%)。
在三小时后,没有一种植物提取物表现出超过 60%的残留驱蚊效果。