Abstract
Rhynchophorus ferrugineus or red palm weevil (RPW) is a destructive insect pest of major cultivated palms such as coconut, date and oil palm. One of the control management of RPW is trunk injection using monocrotophos or methamidophos, but these chemicals are found to affect ecosystems and human health. Thus, we aimed to determine a bio-pesticide to replace these synthetic chemicals. We tested the antifeedant activity of three eugenol-based compounds as potential control agent against RPW larvae in vitro condition for two weeks. All these compounds show significant effect as feeding deterrent agent on 4th instar larvae, while WN16 (4-allyl-2-methoxy-1-(4-trifluoromethyl-benzyloxy)-benzene) shows the highest feeding deterrent index (FDI = 64.42%). Here we present the data regarding the biological aspect on treated RPW larvae as well as antifeedant activity index of these eugenol derived compounds.
Highlights
The dataset for antifeedant activity of eugenol derived compounds against red palm weevil (Rhynchophorus ferrugineus, Olivier) larvae
We tested the antifeedant activity of three eugenolbased compounds as potential control agent against red palm weevil (RPW) larvae in vitro condition for two weeks
We present the data regarding the biological aspect on treated RPW larvae as well as antifeedant activity index of these eugenol derived compounds
Summary
Eugenol was extracted from clove oil and developed by Dr Asnuzilawati from School of Fundamental Science, Universiti Malaysia Terengganu. All reactions were performed under nitrogen atmosphere and monitored by thin layer chromatography (TLC) and were visualized under UV 254 nm without treatment. Column chromatography was performed by silica gel 60. Infrared spectra were recorded in KBr disc on PerkinElmer 100 FT-IR spectrometer. UVevisible spectra were recorded on Shimadzu UV-1601 PC spectrophotometer. 1H and 13C NMR were recorded by Bruker Spectrospin-400 Spectrometer. Elemental analyses were performed on CHNS Analyzer FlashEA 1112 series [2]. Serial dilutions for three eugenol derived compounds were prepared using acetone as solvent to obtain solution in concentrations of 200 ppm, 400 ppm and 600 ppm (Table 3)
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