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Öğe Simultaneous co-immobilization of glucose oxidase and catalase in their substrates(Pleiades Publishing Inc, 2007) Ozyilmaz, G.; Tukel, S. S.Glucose oxidase (GOD) and catalase (CAT) were simultaneously co-immobilized onto magnesium silicate (Florisil (R)) by covalent coupling. Glucose was added in immobilization mixture and hydrogen peroxide, which is the substrate of CAT, was produced in coupling mixture during immobilization time. Therefore, co-immobilization of GOD and CAT was carried out in the presence of both their substrates: glucose and hydrogen peroxide, respectively. The effect of glucose concentration in immobilization mixture on activities of GOD and CAT of co-immobilized samples were investigated. Maximum GOD and CAT activities were determined for samples co-immobilized in the presence of 15 and 20 mM glucose, respectively. Co-immobilization of GOD and CAT in the presence of their substrates highly improved the activity and reusability of both enzymes.
