Fractionation, derivatization and termiticidal activity of cashew (Anacardium occidentale L.) nutshell liquid against the Philippine milk termite (Coptotermes vastater Light)
2008
Boongaling, E.G., Philippines Univ. Los Baños, College, Laguna (Philippines). Inst. of Chemistry | Acda, M.N., Philippines Univ. Los Baños, College, Laguna (Philippines). Dept. of Forest Products and Paper Science | Hernandez, H.P. | del Rosario, E.J., Philippines Univ. Los Baños, College, Laguna (Philippines). Inst. of Chemistry
Cashew (Anacardium occidentale L.) nut shell liquid (CNSL) from the Philippines and its phenolic constituents or derivatives, viz., anacardic acid, cardanol and methyl anacardate, were tested for their termiticidal activity against the Philippine milk termite (Coptotermes vastator Light) (Isoptera: Rhinotermitidae). Results of the study showed that natural CNSL, anacardic acid, cardanol and methyl anacardate have repellent or toxic effects on C.vastator. Behavior of termites exposed to soil treated with CNSL showed reduced tunneling activity and increased mortality. Toxic or repellent thresholds of cardanol and methyl anacardate were comparable to those of other plant extracts such as terpenes and essential oils.
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