Isolation and identification of active compounds against termites from luyang dilaw (Curcuma longa L.)
1990
Fernandez, E.C. (Philippines Univ., Los Banos, College, Laguna (Philippines). Coll. of Forestry. Dept. of Wood Science and Technology)
Soluble extractives of Curcuma longa were bioassayed against termites and show 100% mortality after 24 hours which indicated the presence of toxic components. The extractives were then fractionated using preparative thin layer chromatography (TLC), column and gas chromatography (GC). Fraction 1 which contains the active components was found toxic against Coptotermes vastator and C. formosanus. The two active components (fractions D and F) had been isolated and purified by column chromatography. IR and GC-MS data indicated that these components are sesquiterpenes with molecular formulae C15H24O2 and C15H22O2 for fractions D and F, respectively.
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