Abstract
Immobilization of cellulase onto acrylamide grafted acrylonitrile copolymer (PAN) membranes by means of glutaraldehyde has been studied. The bound cellulase was verified by X-ray photoelectron spectroscopy. The activities of free cellulase and immobilized cellulase are determined by measuring the amount of glucose made from carboxymethyl cellulase in the given conditions. Results show that immobilization conditions had some effects on the activity of immobilized cellulase. The immobilized cellulase had a higher K m than free cellulase (0.02 mg/ml) did. The immobilized cellulase had better stability with respect to pH or temperature than free cellulase.
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