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https://hdl.handle.net/2440/55600
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Type: | Journal article |
Title: | Characterization of the beta-glucosidase activity produced by enological strains of non-saccharomyces yeasts |
Author: | Cordero Otero, R. Ubeda Iranzo, J. Briones-Perez, A. Potgieter, N. Villena, M. Pretorius, I. van Rensburg, P. |
Citation: | Journal of Food Science, 2003; 68(8):2564-2569 |
Publisher: | Inst Food Technologists |
Issue Date: | 2003 |
ISSN: | 0022-1147 1750-3841 |
Statement of Responsibility: | R.R. Cordero Otero, J.F. Ubeda Iranzo, A.I. Briones-Perez, N. Potgieter, M.A. Villena, I.S. Pretorius, and P. van Rensburg |
Abstract: | The beta-glucosidase activities of 20 wine-related non-Saccharomyces yeasts were quantified, characterized,and assessed for their efficiency in releasing aroma-enhancing compounds during the winemaking process. Of these enzymatic activities, the beta-glucosidase activity of Debaryomyces pseudopolymorphus revealed the most suitable combination of properties in terms of functionality at wine pH, resistance to wine-associated inhibitory compounds (glucose, ethanol, and sulfur dioxide), high substrate affinity, and large aglycone-substrate recognition. Its potential as a wine aroma–enhancing enzyme was confirmed by the significantly increasing concentrations of free volatiles (citronellol, nerol, and geraniol) during the fermentation of Chardonnay juice inoculated with both D. pseudopolymorphus and a widely used commercial starter culture strain of Saccharomyces cerevisiae, VIN13. |
Keywords: | Debaryomyces Saccharomyce beta-glucosidase wine yeast |
DOI: | 10.1111/j.1365-2621.2003.tb07062.x |
Published version: | http://dx.doi.org/10.1111/j.1365-2621.2003.tb07062.x |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 5 |
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