The dissertation deals with yeast assimilable nitrogen during the alcohol fermentation. The theoretical part describes the role of nitrogen in the grapevine and the issue of the yeast assimilable nitrogen (YAN). The experimental part focuses on two different nutrient types, further subdivided according to their dosage to low doses, high doses or split high doses. Altogether, we obtained and analysed seven scenarios, including the referential one. The experiments were measured using the following devices: TITROLINE EASY, Miura and FTIR analyser BrukerAlpha. The measurements were complemented with a sensory evaluation which was performed on 4 December 2013 and 28 February 2014. Besides measuring yeast assimilable nitrogen, we also measured titratable acidity, pH, alcohol, residual sugar, etc. The data obtained were analysed using the statistical methods (the STATISTICA 10 programme) and the relations between individual parameters concerned were analysed.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:190345 |
| Date | January 2014 |
| Creators | Jeřábek, Rostislav |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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