Antifeedant activity of active fractions from a tropical plant, Andrographis paniculata Nees against the diamondback moth
نویسندگان
چکیده
Guided by bioassay test results, we have isolated an active compound from the hexane layer of the extract of Andrographis paniculata and it was identified as 14-deoxyandrographolide. Although this compound has been known as a medicine in Pharmacology, its antifeedant activity against insects has never been reported yet. The minimum effective dose (MED = 100μg/leaf disc) on the isolated compound in suppressing the feeding of DBM larva however, is less potent than the hexane layer (MED = 30μg/ leaf disc) and the fraction 5–2 (MED = 50μg/leaf disc). This result suggests that substance(s) other than 14-deoxyandrographolide present in the hexane layer may also be contributing towards feeding suppression against the diamondback moth larva.
منابع مشابه
Characterization studies on medicinal plant of Andrographis paniculata (NEES)
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