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The balance equations pertaining to the modelling of a slap-shaped bead containing immobilized enzyme uniformly distributed which catalyzes the sequential reactions of degradation of a polymeric substrate were written and analytically solved in dimensionless form. The effect of the Thiele modulus on the selectivity of consumption of each multimeric product was studied for a simple case. Whereas plain diffusional regime leads to lower selectivities than plain kinetic regime, improvements in selectivity of species A i relative to species Ai+1 may be obtained at the expense of higher Thiele moduli within a limited range when the diffusivity of A i is larger than that of A i +1, or when the pseudo first order kinetic constant describing the rate of consumption of A i is lower than that of Ai+1.
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Citação
VARGA, S. ; MALCATA, F. Xavier - Enhancement of product selectivity via enzyme immobilization in sequential degradation reactions of polymeric substrates. Bioprocess and Biosystems Engineering. ISSN 0178-515X. 15:4 (1996) 189-194
Editora
Springer Verlag