Abstract
Alginate–carbon beads were prepared in order to develop a biocompatible matrix for laccase and glucose oxidase immobilization for application in biofuel cell technology. The enzyme loading capacity was high (91%) in pure alginate beads for glucose oxidase. For laccase, the loading capacity was enhanced from 75% to 83% by introducing carbon. Desorption out of the matrix was controlled by the enzymes’ diffusion and reached a plateau after 40 h for laccase and 70 h for glucose oxidase. Two-thirds of both enzymes was irreversibly retained inside the alginate beads. This proportion increased to 80% for laccase in combined alginate/carbon beads. Half-life of the adsorbed enzyme was enhanced to 74 days for laccase in carbon/alginate beads and 45 days for glucose oxidase in pure alginate as compared to 38 days and 23 days for free enzymes, respectively.
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This research was supported in part by an ACI “Jeunes Chercheurs”—Ministère de la Recherche.
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Khani, Z., Jolivalt, C., Cretin, M. et al. Alginate/carbon composite beads for laccase and glucose oxidase encapsulation: application in biofuel cell technology. Biotechnol Lett 28, 1779–1786 (2006). https://doi.org/10.1007/s10529-006-9160-1
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DOI: https://doi.org/10.1007/s10529-006-9160-1