dc.contributor.advisor | Vásquez Cortez, Luis Humberto | |
dc.contributor.author | Cevallos Castillo, Carmen Anais | |
dc.date.accessioned | 2025-05-06T12:53:12Z | |
dc.date.available | 2025-05-06T12:53:12Z | |
dc.date.issued | 2025 | |
dc.identifier.uri | http://dspace.utb.edu.ec/handle/49000/18198 | |
dc.description | This study evaluated the impact of two fermentation methods (Rohan boxes and jute bags) and three levels of mountain microbial induction (0%, 30%, and 60%) on the physicochemical and sensory properties of Ecuadorian cacao varieties Nacional and CCN51, using a three-factor experimental design. The results demonstrated that fermentation in Rohan boxes with 60% microbial induction significantly optimized the cacao's sensory profile, achieving a score of 8.4/9 in aroma, flavor, and texture, and 83.6% well-fermented beans, surpassing the non-induced control (6.1/9 and 58.3%, respectively). Furthermore, stable fermentation conditions were observed (temperatures of 45.8°C to 49.5°C, final pH of 5.0 to 5.2, and Brix levels above 16.3), which favored a more uniform and controlled fermentation. The physicochemical quality of the beans also showed significant improvements, especially in the levels of bioactive compounds, with an antioxidant capacity of up to 89.27% in the optimal treatment. Furthermore, it was shown that the interaction between the type of fermenter and the percentage of microbial induction directly influenced the reduction of defects such as flat, purple, and slate-like beans, and promoted greater homogeneity in the bean's organoleptic attributes. This biotechnological approach not only improves cacao quality but also represents a sustainable and adaptable alternative for small producers by leveraging native microorganisms. Together, these findings highlight the potential of directed fermentation as a key tool for improving the Ecuadorian cacao value chain | es_ES |
dc.description | This study evaluated the impact of two fermentation methods (Rohan boxes and jute bags) and three levels of mountain microbial induction (0%, 30%, and 60%) on the physicochemical and sensory properties of Ecuadorian cacao varieties Nacional and CCN51, using a three-factor experimental design. The results demonstrated that fermentation in Rohan boxes with 60% microbial induction significantly optimized the cacao's sensory profile, achieving a score of 8.4/9 in aroma, flavor, and texture, and 83.6% well-fermented beans, surpassing the non-induced control (6.1/9 and 58.3%, respectively). Furthermore, stable fermentation conditions were observed (temperatures of 45.8°C to 49.5°C, final pH of 5.0 to 5.2, and Brix levels above 16.3), which favored a more uniform and controlled fermentation. The physicochemical quality of the beans also showed significant improvements, especially in the levels of bioactive compounds, with an antioxidant capacity of up to 89.27% in the optimal treatment. Furthermore, it was shown that the interaction between the type of fermenter and the percentage of microbial induction directly influenced the reduction of defects such as flat, purple, and slate-like beans, and promoted greater homogeneity in the bean's organoleptic attributes. This biotechnological approach not only improves cacao quality but also represents a sustainable and adaptable alternative for small producers by leveraging native microorganisms. Together, these findings highlight the potential of directed fermentation as a key tool for improving the Ecuadorian cacao value chain | es_ES |
dc.description.abstract | Este estudio evaluó el impacto de dos métodos de fermentación (cajas Rohan y sacos de yute) y tres niveles de inducción de microorganismos de montaña (0%, 30% y 60%) en las propiedades fisicoquímicas y sensoriales de las variedades de cacao ecuatoriano Nacional y CCN51, mediante un diseño experimental trifactorial. Los resultados demostraron que la fermentación en cajas Rohan con un 60% de inducción microbiana optimizó significativamente el perfil sensorial del cacao, alcanzando una puntuación de 8.4/9 en aroma, sabor y textura, y un 83.6% de granos bien fermentados, superando al control sin inducción (6.1/9 y 58.3%, respectivamente). Además, se observaron condiciones fermentativas estables (temperaturas de 45.8 °C a 49.5 °C, pH final de 5.0 a 5.2 y grados Brix superiores a 16.3), lo que favoreció una fermentación más uniforme y controlada. La calidad fisicoquímica del grano también mostró mejoras significativas, especialmente en los niveles de compuestos bioactivos, con una capacidad antioxidante de hasta 89.27% en el tratamiento óptimo. Asimismo, se evidenció que la interacción entre el tipo de fermentador y el porcentaje de inducción microbiana influyó directamente en la reducción de defectos como granos planos, violetas y pizarrosos, y promovió una mayor homogeneidad en los atributos organolépticos del grano. Este enfoque biotecnológico no solo mejora la calidad del cacao, sino que también representa una alternativa sostenible y adaptable para pequeños productores, al aprovechar microorganismos autóctonos. En conjunto, estos hallazgos resaltan el potencial de la fermentación dirigida como herramienta clave para el mejoramiento de la cadena de valor del cacao ecuatoriano | es_ES |
dc.format.extent | 135 p. | es_ES |
dc.language.iso | es | es_ES |
dc.publisher | BABAHOYO: UTB, 2025 | es_ES |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 United States | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/us/ | * |
dc.subject | Precursores de aroma | es_ES |
dc.subject | Capacidad antioxidante | es_ES |
dc.subject | Evaluación sensorial | es_ES |
dc.subject | Fermentación dirigida | es_ES |
dc.subject | Variedades de cacao | es_ES |
dc.title | Evaluación de métodos fermentativos de cacao Nacional y CCN51 usando yute, cajas Rohan y microorganismos para mejorar propiedades sensoriales | es_ES |
dc.type | bachelorThesis | es_ES |