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  • Title: [Activity and stability of glucoamylase preparations in different methods of immobilization].
    Author: Ivanova LA, Rakhimov MM, El'chits SV, Ruzieva DM, Sandul GV.
    Journal: Ukr Biokhim Zh (1978); 1985; 57(1):31-6. PubMed ID: 3919482.
    Abstract:
    Catalytic activity and stability of glucoamylases immobilized by different methods (adsorption, covalent binding) are studied comparatively. The highest stability is shown to be obtained under covalent binding. The binding efficiency and immobilized glucoamylase properties depend on the nature of insoluble carrier and a purification degree of the enzyme preparations. The choice of the cross-linking agent promoting a binding between the enzyme and the carrier is very significant. The activity and stability of immobilized glucoamylases obtained when using different cross-linking agents rise in such a sequence: 2,4-toluylenediisocyanate, cyanurochloride, glutaric dialdehyde, gossypol. Catalytic properties and stability are determined for soluble and immobilized glucoamylase forms from different sources.
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