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Kinetic properties of tyrosinase immobilized on a polymeric membrane for the production of l-3,4-dihydroxyphenylalanine (l-DOPA) were investigated. A comparison with the properties shown by the free enzyme used in a stirred tank reactor was also carried out. The values of the Michaelis–Menten constant indicated that the immobilized tyrosinase exhibited better affinity for the substrate (Km=1.56mM...
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