Evaluación del perfil aromático de café colombiano de distintas zonas y épocas de cosecha, usando de nariz electrónica y análisis estadístico multivariado

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dc.contributor.advisorDíaz Moreno, Amanda Consuelo
dc.contributor.advisorZuluaga Domínguez, Carlos Mario
dc.contributor.authorDiaz Villamizar, Maria Angelica
dc.contributor.researchgroupBioalimentosspa
dc.date.accessioned2022-08-16T15:10:47Z
dc.date.available2022-08-16T15:10:47Z
dc.date.issued2022-08-15
dc.descriptionilustraciones, fotografías, graficasspa
dc.description.abstractPara evaluar cómo el origen y época de cosecha del café afectan los perfiles de compuestos volátiles, en este estudio se empleó de nariz electrónica y análisis estadístico multivariado para la caracterización de cinco muestras de café colombiano, tostado en grano y tostado molido, recolectadas en distintas épocas de cosecha (junio y diciembre) de tres fincas cafeteras en zonas del país (Caldas, Huila y Sierra Nevada de Santa Marta). Para ello, se estandarizaron los parámetros de operación en una nariz electrónica comercial (10 sensores semiconductores de óxido de metal) para café tostado, variando el tiempo de equilibrio del headspace y flujo de gas. Con estos parámetros estandarizados y junto a análisis fisicoquímicos y sensoriales se describieron las muestras. El análisis de datos se efectuó con análisis univariados y bivariados para los resultados fisicoquímicos, análisis no paramétrico y análisis de correspondencia (AC) para los resultados del panel sensorial, análisis multivariado (análisis de componentes principales (PCA), análisis de clústeres jerárquico (HCA), y análisis factorial multivariante (MFA)) para los resultados obtenidos por la nariz electrónica. Las características aromáticas del café tostado por origen sí permitieron una separación por origen, y la influencia de la época de cosecha se encontró significativa para los parámetros fisicoquímicos, pero no permitió una separación por clases con el perfil aromático. Se observó a través de esta exploración, que la nariz electrónica es una alternativa práctica y confiable de valoración y descripción del perfil aromático para café tostado que puede ser empleada para análisis rutinarios a nivel industrial. (Texto tomado de la fuente)spa
dc.description.abstractTo evaluate how the origin and harvest time of coffee affect the profiles of volatile compounds, this study used electronic nose and multivariate statistical analysis to characterize five samples of Colombian coffee, roasted beans and ground roasted, collected in different harvest times (June and December) of three coffee farms in areas of the country (Caldas, Huila, and Sierra Nevada de Santa Marta). For this, the operating parameters were standardized in a commercial electronic nose (10 metal oxide semiconductor sensors) for roasted coffee, varying the headspace equilibrium time and gas flow. With these standardized parameters and together with physicochemical and sensory analyses, the samples were described. Data analysis was performed with univariate and bivariate analyzes for the physicochemical results, nonparametric analysis, and correspondence analysis (CA) for the sensory panel results, multivariate analysis (principal component analysis (PCA), hierarchical cluster analysis (HCA), and multivariate factor analysis (MFA)) for the results obtained by the electronic nose. The aromatic characteristics of roasted coffee by origin did allow a separation by classes, and the influence of the harvest season was found to be significant for the physicochemical parameters, but it did not allow a separation by classes with the aromatic profile. Through this exploration, it was observed that the electronic nose is a practical and reliable alternative for the evaluation and description of the aromatic profile for roasted coffee that can be used for routine analyzes at an industrial level.eng
dc.description.degreelevelMaestríaspa
dc.description.degreenameMagíster en Ciencia y Tecnología de Alimentosspa
dc.description.researchareaUso de análisis instrumental en evaluación de propiedades sensorialesspa
dc.format.extentxvii, 98 páginasspa
dc.format.mimetypeapplication/pdfspa
dc.identifier.instnameUniversidad Nacional de Colombiaspa
dc.identifier.reponameRepositorio Institucional Universidad Nacional de Colombiaspa
dc.identifier.repourlhttps://repositorio.unal.edu.co/spa
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/81913
dc.language.isospaspa
dc.publisherUniversidad Nacional de Colombiaspa
dc.publisher.branchUniversidad Nacional de Colombia - Sede Bogotáspa
dc.publisher.departmentInstituto de Ciencia y Tecnología de Alimentos (ICTA)spa
dc.publisher.facultyFacultad de Ciencias Agrariasspa
dc.publisher.placeBogotá, Colombiaspa
dc.publisher.programBogotá - Ciencias Agrarias - Maestría en Ciencia y Tecnología de Alimentosspa
dc.relation.indexedRedColspa
dc.relation.indexedLaReferenciaspa
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.licenseAtribución-SinDerivadas 4.0 Internacionalspa
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/spa
dc.subject.agrovocCoffea arabicaeng
dc.subject.agrovocCafé arábicaspa
dc.subject.ddc630 - Agricultura y tecnologías relacionadas::631 - Técnicas específicas, aparatos, equipos, materialesspa
dc.subject.proposalCafé tostadospa
dc.subject.proposalÉpoca de cosechaspa
dc.subject.proposalAnálisis multivariadospa
dc.subject.proposalNariz electrónicaspa
dc.subject.proposalOrigenspa
dc.subject.proposalCoffee roastedeng
dc.subject.proposalHarvest seasoneng
dc.subject.proposalMultivariate analysiseng
dc.subject.proposalElectronic noseeng
dc.subject.proposalOrigineng
dc.subject.unescoInstrumento de medidaspa
dc.subject.unescoMeasuring instrumentseng
dc.titleEvaluación del perfil aromático de café colombiano de distintas zonas y épocas de cosecha, usando de nariz electrónica y análisis estadístico multivariadospa
dc.title.translatedEvaluation of the aromatic profile of Colombian coffee from different zones and harvest seasons, using electronic nose and multivariate statistical analysiseng
dc.typeTrabajo de grado - Maestríaspa
dc.type.coarhttp://purl.org/coar/resource_type/c_bdccspa
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aaspa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/masterThesisspa
dc.type.redcolhttp://purl.org/redcol/resource_type/TMspa
dc.type.versioninfo:eu-repo/semantics/acceptedVersionspa
dcterms.audience.professionaldevelopmentEstudiantesspa
dcterms.audience.professionaldevelopmentInvestigadoresspa
dcterms.audience.professionaldevelopmentMaestrosspa
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2spa

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