Abstract
The present work describes purification and characterization of an extracellular cellulase from a newly isolated cellulolytic bacterial strain Bacillus pumilus EWBCM1. The candidate strain was tested for its abilities to hydrolyze the structural polysaccharides through the depolymerising activities of carboxymethylcellulase. The purification of cellulase was carried out by ammonium sulphate precipitation, DEAE cellulose and sephadex G-100. Purified cellulase was found to be 47.56 fold along with 1.46 U/mg of protein and the molecular weight of cellulase was 47 kDa through SDS-PAGE electrophoresis. The optimum activity of cellulase was registered at pH 10 at 50 °C. In the present study, metal ions inferred the addition of 5 mM CaCl2 (128%) was recorded good activity than the other tested metal ions. Maximum activity of purified cellulase was recorded in 3% of NaCl and 5% of surfactants medium. The bioactive of purified cellulase was carried out with various commercial detergent and antimicrobial activity.
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