From hexane extract of wheat flour infested by the sawtoothed gain beetle [Oryzaephilus surinamensis (L.); Coleoptera; Silvanidae, three ketosteroids,cholestan-3-one(3),ergostan-3-one(4)and stigmastan-3-one(5),were obtained in a mixture and identified as arrestants to this weevil.
Oryzaephilus surinamensis(L.)
infested wheat flour
arrestants
cholestan-3-one
ergostan-3-one and stigmastan-3-one