The aim of this master thesis was to compare the effect of active dry wine yeast (ADWY), own yeast starter and spontaneous fermentation on the quality of wine produced, knowing that the fermentation is a key process in winemaking. An experiment was run with the grape varieties Veltlínske zelené and Pálava, vintage 2016, grown at University vineyards in Lednice. Racked and moderately sulfited must with optimal yeast assimilable nitrogen and sugar content was the starting point of the experiment. It was inoculated by commercial ADWY, a yeast starter prepared previously from the grapes of the same origin and the last sample was not inoculated so fermented spontaneously. Fermentation took place in the University wine cellar. Final wines were not treated by any preparate except sulfiting. Sensory and analytical analysis took place in spring 2017. The usage of self-prepared yeast starter has shown the highest sensory quality in both varieties. It has been confirmed that this old and reliable method is capable of producing high quality wines reflecting the terroir.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:424819 |
| Date | January 2017 |
| Creators | Kacina, Michal |
| Source Sets | Czech ETDs |
| Language | Slovak |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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