Abstract
Essential oil (EO) of ginger and oleoresins isolated from extraction solvents by GC–MS. Zingiberene was the major constituent in all the samples, and ethanol could extract the maximum quantity (21.2%) from the dried de-oiled cake (EDD) followed by EO (20.3%) as compared to oleoresins. Hydro-distilled EO contains higher oxygenated monoterpenes (22.4%) than oleoresins. EDD showed more toxicity to larvae of Plutella xylostella (LC50 = 4957.9 mg L−1) after 96 h and was followed by EDW (LC50 = 5067.6 mg L−1) and EF (LC50 = 6631.2 mg L−1). EO also showed promising efficacy (LC50 = 5875.9 mg L−1) and repellency (97.1%) against P. xylostella.
Published Version
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