Cell-recycle batch fermentation using immobilized cells of flocculent Saccharomyces cerevisiae wine strains |
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| Authors: | G. Suzzi P. Romano L. Vannini L. Turbanti P. Domizio |
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| Affiliation: | (1) Dipartimento di Difesa, Biologia e Biotecnologie Agroforestali, Università della Basilicata, Via Nazario Sauro 85, 85100 Potenza, Italy;(2) Dipartimento di Protezione e Valorizzazione Agroalimentare, Università di Bologna, Bologna, Italy;(3) Dipartimento di Biologia Animale e Genetica, Università di Firenze, Firenze, Italy |
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| Abstract: | Five, highly flocculeng strains of Saccharomyces cerevisiae, isolated from wine, were immobilized in calcium alginate beads to optimize primary must fermentation. Three cell-recycle batch fermentations (CRBF) of grape musts were performed with the biocatalyst and the results compared with those obtained with free cells. During the CRBF process, the entrapped strains showed some variability in the formation of secondary products of fermentation, particularly acetic acid and acetaldehyde. Recycling beads of immobilized flocculent cells is a good approach in the development and application of the CRBF system in the wine industry. |
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| Keywords: | Batch fermentation immobilization Saccharomyces cerevisiae secondary products wine yeast wine making |
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