Volatile fatty acids of frass of certain omnivorous insects

Abstract
The frass of the following omnivorous insects reared on natural and artificial diets was analyzed for volatile fatty acids:Blattella germanica, Acheta domesticus, Blaberus discoidalis. Acetic, propionic, isobutyric, butyric, isovaleric, and valeric acids were identified in all frass samples. The possible significance of volatile fatty acids in frass is discussed.