Production and characterization of cellulolytic enzymes by isolated Klebsiella sp. PRW-1 using agricultural waste biomass

The efficient cellulolytic microorganism was isolated from soil samples collected from Shivaji University campus. Biochemical test and phylogenetic analysis of isolated culture identified as Klebsiella sp. PRW-1. The isolated culture could utilize pure cellulosic substrates (carboxymethylcellulose (CMC) and avicel) and different agricultural wastes like sugarcane bagasse, sugarcane barbojo, sorghum husks, grass powder, corn straw and paddy straw by producing a large amount of endoglucanase, exoglucanase, β-glucosidase, filter paperase (FPU), xylanase and glucoamylase. The reducing sugar production was found higher in the presence of grass powder and sugarcane barbojo. Effects of different physic-chemical parameters to achieve maximum cellulolytic enzymes production were systematically investigated. The effects of supplementation of different metals additives as well as the stability in the presence of higher temperature, pH and commercial detergents, on cellulolytic enzymes were also studied. The foregoing result increases the applicability of the strain for the utilization and bioconversion of lignocellulosic biomass that could be used for bioenergy production.