Characteristics of immobilized invertase

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Abstract
Five kinds of immobilized invertases (IMI)—covalently of porous glass and ion‐exchange resins and ionically on ion‐exchange resins—have been prepared and their kinetic characteristics for sucrose hydrolysis, such as Km, K, pH profile, and thermal stability were studied. Comparing the values of Km and activation energy and the entropy of IMI with those of native invertase, it was concluded that the immobilization influences not binding but kinetic specificity. The effects of the immobilization method on thermal stability were also discussed.