Modeling multidimensional quality in carrots from spectral responses, imaging, and consumer perception

dc.contributor.advisorRamirez Gil, Joaquin Guillermo
dc.contributor.advisorHenao Rojas, Juan Camilo
dc.contributor.authorOspina Sanchez, Paola Andrea
dc.contributor.researchgroupLaboratorio de Agrocomputación y Análisis Epidemiológico
dc.date.accessioned2026-02-12T22:53:56Z
dc.date.available2026-02-12T22:53:56Z
dc.date.issued2025-10-21
dc.descriptionilusraciones a color, diagramas, fotografíasspa
dc.description.abstractThis thesis proposes an innovative framework to model the multidimensional quality of carrots by integrating geospatial technologies, spectral sensing, artificial intelligence, and consumer perception. The study addresses a key limitation in the carrot value chain: the disconnect between scientific research, largely focused on nutritional composition, and consumer preferences, which are primarily driven by sensory attributes. A mixed-methods methodological approach was implemented, combining bibliometric analysis, natural language processing of web trends, social media sentiment analysis, and structured surveys to identify the main determinants of carrot quality across regions and stakeholders. Results revealed that while approximately 85% of scientific studies emphasize nutritional properties, about 82% of consumers prioritize sensory characteristics, highlighting a critical mismatch in value-chain decision-making. Postharvest experiments demonstrated that refrigeration at 4 °C significantly reduces β-carotene degradation compared with room temperature storage, with purple genotypes showing superior stability. In parallel, non-destructive spectral techniques (VIS–NIR), hyperspectral imaging, and colorimetry were integrated with machine-learning models to estimate carotenoid content and detect defects. A novel spectral-color index (ICarot) achieved strong predictive performance (R² = 0.85), and deep-learning models reached 74% accuracy in automated defect classification.eng
dc.description.abstractEsta tesis propone un marco innovador para modelar la calidad multidimensional de la zanahoria mediante la integración de tecnologías geoespaciales, sensado espectral, inteligencia artificial y percepción del consumidor. El estudio aborda una limitación clave en la cadena de valor: la desconexión entre la investigación científica, centrada principalmente en la composición nutricional, y las preferencias del consumidor, dominadas por atributos sensoriales. Se aplicó un enfoque metodológico mixto que combinó análisis bibliométrico, procesamiento de lenguaje natural de tendencias web, análisis de sentimiento en redes sociales y encuestas estructuradas para identificar los determinantes de la calidad a lo largo de regiones y actores de la cadena. Los resultados mostraron que cerca del 85 % de los estudios científicos priorizan propiedades nutricionales, mientras que aproximadamente el 82 % de los consumidores priorizan características sensoriales, evidenciando una discrepancia crítica en la toma de decisiones del sistema productivo. Los experimentos poscosecha demostraron que la refrigeración a 4 °C reduce significativamente la degradación de β-caroteno frente al almacenamiento a temperatura ambiente, destacándose los genotipos morados por su mayor estabilidad. Paralelamente, técnicas no destructivas basadas en espectroscopía VIS–NIR, imágenes hiperespectrales y colorimetría se integraron con modelos de aprendizaje automático para estimar carotenoides y detectar defectos. El nuevo índice espectro-color (ICarot) mostró alta capacidad predictiva (R² = 0,85), mientras que modelos de aprendizaje profundo alcanzaron 74 % de exactitud en la clasificación automática de defectos. (Texto tomado de la fuente)spa
dc.description.degreelevelMaestría
dc.description.degreenameMagíster en Geomatica
dc.description.notesTexto en inglésspa
dc.description.researchareaAplicaciones de la geoinformación en la gestión de recursos naturales
dc.description.sponsorshipLos reconocimientos se extienden a AGROSAVIA - Corporación Colombiana de Investigación Agropecuaria, financiado con recursos públicos del Ministerio de Agricultura y Desarrollo Rural (MADR), y al proyecto “Fortalecimiento de la cadena productiva de la zanahoria mediante la creación de prototipos de productos innovadores en el oriente del departamento de Antioquia”, realizado por el Grupo de Investigación FACEA y AGROSAVIA, financiado por el Fondo de Ciencia, Tecnología e Innovación del Sistema General de Regalías (código BPIN2020000100192).
dc.format.extent170 páginas
dc.format.mimetypeapplication/pdf
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/89535
dc.language.isoeng
dc.publisherUniversidad Nacional de Colombia
dc.publisher.branchUniversidad Nacional de Colombia - Sede Bogotá
dc.publisher.facultyFacultad de Ciencias Agrarias
dc.publisher.placeBogotá, Colombia
dc.publisher.programBogotá - Ciencias Agrarias - Maestría en Geomática
dc.relation.indexedAgrosavia
dc.relation.indexedAgrovoc
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.rights.licenseReconocimiento 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.agrovocCalidad del alimentospa
dc.subject.agrovocfood qualityeng
dc.subject.agrovocEspectroscopiaspa
dc.subject.agrovocspectroscopyeng
dc.subject.agrovocDaucus carotaspa
dc.subject.agrovocComportamiento del consumidorspa
dc.subject.agrovocconsumer behavioureng
dc.subject.ddc630 - Agricultura y tecnologías relacionadas::633 - Cultivos de campo y de plantaciónspa
dc.subject.proposalPost-harvest qualityeng
dc.subject.proposalNon-destructiveeng
dc.subject.proposalDigital toolseng
dc.subject.proposalArtificial intelligenceeng
dc.subject.proposalGeospatial technologieseng
dc.subject.proposalSpatial microscaleeng
dc.subject.proposalCalidad poscosechaspa
dc.subject.proposalNo destructivospa
dc.subject.proposalHerramientas digitalesspa
dc.subject.proposalInteligencia artificialspa
dc.subject.proposalTecnologías geoespacialesspa
dc.subject.proposalMicroescala espacialspa
dc.titleModeling multidimensional quality in carrots from spectral responses, imaging, and consumer perceptioneng
dc.title.translatedModelacion de la calidad multidimensional en zanahorias a partir de respuestas espectrales, imágenes y percepción del consumidorspa
dc.typeTrabajo de grado - Maestría
dc.type.coarhttp://purl.org/coar/resource_type/c_bdcc
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.contentText
dc.type.driverinfo:eu-repo/semantics/masterThesis
dc.type.redcolhttp://purl.org/redcol/resource_type/TM
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dcterms.audience.professionaldevelopmentInvestigadores
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2
oaire.fundernameProyecto “Fortalecimiento de la cadena productiva de la zanahoria mediante la creación de prototipos de productos innovadores en el oriente del departamento de Antioquia”, Sistema General de Regalías (código BPIN2020000100192).

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