Azadirachtin, the most potent insect antifeedant and growth-regulating agent,is extracted from the seed of the neem tree, azadirachta indica A.Juss. At present, extensive researches have focused on the extraction of effective ingredients, structural determination and favorable application of azadirachtin. The method to extract azadirachtin is mostly traditional solvent extraction (TSE). However, there are few reports on microwave assistant extraction (MAE), on CO2 supercritical fluid extraction (SFE), on bi...