Antifungal activity of flavonoids and their mixtures against different fungi occurring on grain

Abstract The antifungal activity of three flavones and one flavanone and of different mixtures of these flavonoids was investigated on malt extract agar against four fungi usually occurring on grain. As pure substances the unsubstituted flavone and flavanone showed higher activity than the hydroxylated flavones. Mixtures containing flavone and 7‐hydroxyflavon or flavone, flavanone and flavonol caused higher inhibition of fungal growth than the remaining ones.