Browsing by Author "Guerrero Murillo, Yuliana Alexandra"
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Item Determinación de la capacidad fermentativa en levaduras nativas de uvas negras en el Valle del Cauca(Universidad Santiago de Cali, 2022) Guerrero Murillo, Yuliana Alexandra; Mateus Llanos, Jennifer Alejandra; Alzate Calderón, Paola Carolina (Directora); Vera Lizcano, Omaira (Directora)Isabella grape (Vitis labrusca) is a black grape variety grown in the municipality of La Unión (Valle del Cauca). This municipality is one of the largest producers of this type of grape in the region, for consumption in the family basket; this grape variety is one of the main sources of native yeasts, which could help positively in the fermentation process for winemaking. The main objective of this research was to isolate some yeast strains in black grapes, to standardize a red wine. Regarding the methodology used, the alcoholic fermentation process was evaluated in a spontaneous way, performing a re-fermentation process from a batch of wine. To achieve this, parameters such as pH, temperature, density, and alcohol percentage were analyzed. The results show that the Isabella de la Unión Valle grape can be used in the fermentation process and is suitable for obtaining wine, since it contains native yeasts suitable for carrying out an adequate fermentation process. In conclusion, it was determined that the microbial load is suitable to corroborate that, within the parameters, the alcoholic percentage is within what is indicated by Colombian regulations for commercial fruit wines, and, in addition, the sensory characteristics of the wine obtained are optimal and suitable for the production of this type of wine, mainly favoring the economy of the region.