Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/9778
Title: | Saccharomyces cerevisiae and Oenococcus oeni immobilized in different layers of a cellulose/starch gel composite for simultaneous alcoholic and malolactic wine fermentations | Authors: | Servetas, Ioannis Berbegal, Carmen Camacho, Nathalia Bekatorou, Argyro Ferrer, Sergi Nigam, Poonam Singh Drouza, Chryssoula Koutinas, Αthanasios Α. |
Major Field of Science: | Agricultural Sciences | Field Category: | Other Agricultural Sciences | Keywords: | Composite biocatalyst;Immobilization;Malolactic fermentation;Oenococcus oeni;Saccharomyces cerevisiae;Wine | Issue Date: | Sep-2013 | Source: | Process Biochemistry, 2013, vol. 48, no.9, pp. 1279-1284 | Volume: | 48 | Issue: | 9 | Start page: | 1279 | End page: | 1284 | Journal: | Process Biochemistry | Abstract: | The production of a two-layer composite biocatalyst for immobilization of two different microorganisms for simultaneous alcoholic and malolactic fermentation (MLF) of wine in the same bioreactor is reported. The biocatalyst consisted of a tubular delignified cellulosic material (DCM) with entrapped Oenococcus oeni cells, covered with starch gel containing the alcohol resistant and cryotolerant strain Saccharomyces cerevisiae AXAZ-1. The biocatalyst was found effective for simultaneous low temperature alcoholic fermentation resulting to conversion of malic acid to lactic acid in 5 days at 10 °C. Improvement of wine quality compared with wine fermented with S. cerevisiae AXAZ-1 immobilized on DCM was attributed to MLF as well as to increased ester formation and lower higher alcohols produced at low fermentation temperatures (10 °C) as shown by GC and headspace SPME GC/MS analysis. Scanning electron microscopy showed that the preparation of a three-layer composite biocatalyst is also possible. The significance of such composite biocatalysts is the feasibility of two or three bioprocesses in the same bioreactor, thus reducing production cost in the food industry. | URI: | https://hdl.handle.net/20.500.14279/9778 | ISSN: | 13595113 | DOI: | 10.1016/j.procbio.2013.06.020 | Rights: | © Elsevier | Type: | Article | Affiliation : | University of Patras University of Valencia University of Ulster at Coleraine Cyprus University of Technology |
Publication Type: | Peer Reviewed |
Appears in Collections: | Άρθρα/Articles |
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