Antifungal activity of anacardiaceae extracts on ear rot fungi

Abstract

The aim of this work was to quantify the antifungal activity of leaf extracts from Schinopsis on Fusarium species causing ear rot disease. Leaves from S. haenkeana and S. lorentzii were extracted with dichloromethane and ethyl acetate. The extracts were evaporated to dryness. The dry powders were dissolved in methanol and filtrated. The fungicidal activity of the methanolic extracts was evaluated by the liquid broth microdilution method. Inhibitory concentration of 50% (IC50) was calculated. Leaf extracts from S. lorentzii had IC50s of 42 ml ( dichloromethane, F verticillioides and F graminearum ), 100 ~/ml ( ethyl aceta te, F graminearum) and 3 5. 7 ml ( ethyl acetate, F verticillioides ). Extracts from Schinopsis haenkeana were less inhibitory of fungal growth. The isolation and structural elucidation of the antifungals from the dichloromethane extract of S. lorentzii are under way.