Repellency and Fumigant Toxicity of Aloe vera, Astragalus sarcocolla , Commiphora myrrha and Ferula assa-foetida L Gum Resin Powders and Methanol Extracts against Trogoderma granarium Everts

摘要

The biological activity of Ferula assa-foetida, Aloe vera, Astragalus sarcocolla and Commiphora myrrha gum resin powders and their methanol extracts were tested on 5th, fifth instar larvae of the Trogoderma granarium beetle. This evaluation was conducted using bioassays of the repellency effect of the gum resin powders at concentrations of 0.5,0.9,2 and 4%and the fumigants toxicity of the methanol extracts at concentrations of0.2,0.4,0.6 and 0.8%at exposure periods of 24, 48 and 72 hours. The descending order of effective powders starts with the repellency effect at applied concentrations: F.assa-foetida A.vera A.sarcocolla C.myrrha. The F.assa-foetida gum resin powder lead in repellency by providing 100% repellency at all concentrations after 24 hours of exposure. A.vera, A.sarcocolla and C.myrrha (μ1/L air) of the methanol extracts had a descending rating for effectiveness: 0.99, 0.99, 0.98 and 8.33 μ1/L air for F.assa-foetida A. vera C. myrrha A. sarcocolla, respectively, after 72 hours of exposure to the fumigants. This study discussed the potential biological activity of some chemical compounds that possess plant gum resin.