Characterization of glycosidase in the mid-gut of the early third larval instars in gasterophilus intestinalis

ABSTRACT

Mid-gut homogenates from the early third larval instars of Gasterophilus intestinalis contain at least four glycosidases. Enzyme activity was found alpha-galactosidase and beta-galactosidase. Also-alpha-amylase showed activity in midcythomogenates. All enzymes had acidic pH optima of 3.6-6.A drug [Banminth 12.5% pyrantel tartarate] used for the routine control of helminthes parasites of horses and donkies in Egypt was used in vitro to investigate its effect on the optimal activity of studied enzymes