Powdered Meliaceae extracts useful as insecticides

摘要

Powdered extracts of the fruits and/or seeds of plants of the family Meliaceae, except for the neem tree (Azadirachta indica), are new. Also claimed are: (1) a process for producing the extract, and (2) a method for determining the biological activity of the extract, which comprises determining the amt of ochinine 3-acetate, 1-tigloyl-trichilinine and/or 1-cinnamoyl-trichilinine in the extract. The extracts are produced by (a) extracting the comminuted fruits and/or seeds with a mixt of H2O and a polar organic solvent, esp EtOH and/or MeOH, to obtain a crude extract; (b) extracting the crude extract with a polar organic solvent, esp EtOCa, opt contg