Isolation and characterisation of biologically‐active compounds from some plant extracts

Abstract

Abstract Of the numerous fractions obtained from the crude plant extracts of Chenopodium ambrosioides, Conyza dioscordisis and Convolvulus arvensis , 11 were found to be active against stored grain pests. The chemical structures of compounds present in the 11 fractions were found by gas chromatography/mass spectrometry to include predominantly long‐chain fatty acid esters of hexadecanoic, arachidonic, and octadecanoic acids.