| Title | Bioprocess Optimization by Taguchi Design and Response Surface Analysis for Obtaining Active Yeast Used in Vinification |
|---|---|
| ID_Doc | 18426 |
| Authors | Dumitrache, C; Ghica, MV; Frîncu, M; Barbulescu, ID; Begea, M; Diguta, CF; Banita, C; Cotea, VV; Israel-Roming, F; Teodorescu, RI |
| Title | Bioprocess Optimization by Taguchi Design and Response Surface Analysis for Obtaining Active Yeast Used in Vinification |
| Year | 2024 |
| Published | Fermentation-Basel, 10.0, 8 |
| Abstract | This study presents the behavior of the identified yeast strain S. cerevisiae, isolated from Busuioac & abreve; de Bohotin grapes from the Pietroasa winery, during the process of fermentation to obtain dry active yeast biomass for the winemaking process. In this respect, we promoted an optimization strategy for obtaining active dry yeast biomass. The cultivation conditions for micropilot fermentation (temperature, pH, carbon source, and nitrogen source) were selected and designed according to a Taguchi design with four factors and three levels. Reproducibility testing was conducted under specific fermentation parameters: temperature (32 degrees C), pH (4.5), carbon source (12%), and nitrogen source (0.7%). Following the optimization process, two combinations of cultivation parameters were selected, and one of them, based on the results, was selected for further analysis. Quantitative data were obtained, showing dry yeast biomass (DCW) at 1.39 g/100 mL and protein content at 45.57%. The active yeast was then used in the winemaking process for T & abreve;m & acirc;ioas & abreve; Rom & acirc;neasc & abreve; and Busuioac & abreve; de Bohotin varieties at Pietroasa winery for validation. This optimization aims to facilitate easy and rapid production of fresh wine yeast tailored to the local winemaking practices of Pietroasa winery, with real application potential in other viticultural areas, aligning with the terroir concept. |
| https://www.mdpi.com/2311-5637/10/8/413/pdf?version=1723447214 |
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