The characterization of the intracellular β-glucosidase from Paecilomyces sp.FLH30A including substrate specificity,kinetic properties,transglycosylation activity and activation and inhibition were studied. The results showed that the optimum temperature and pH of the enzyme glucosidase were 60℃ and 6.0,respectively. Its residual activity was more than 80% after being treated at 70℃ and pH5.0~12.0 for 30min.The β-glucosidase was a single subunit protein with molecular mass of 57.2ku. The enzyme exhibited a ...