Modeling multidimensional quality in carrots from spectral responses, imaging, and consumer perception
| dc.contributor.advisor | Ramirez Gil, Joaquin Guillermo | |
| dc.contributor.advisor | Henao Rojas, Juan Camilo | |
| dc.contributor.author | Ospina Sanchez, Paola Andrea | |
| dc.contributor.researchgroup | Laboratorio de Agrocomputación y Análisis Epidemiológico | |
| dc.date.accessioned | 2026-02-12T22:53:56Z | |
| dc.date.available | 2026-02-12T22:53:56Z | |
| dc.date.issued | 2025-10-21 | |
| dc.description | ilusraciones a color, diagramas, fotografías | spa |
| dc.description.abstract | This 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.abstract | Esta 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.degreelevel | Maestría | |
| dc.description.degreename | Magíster en Geomatica | |
| dc.description.notes | Texto en inglés | spa |
| dc.description.researcharea | Aplicaciones de la geoinformación en la gestión de recursos naturales | |
| dc.description.sponsorship | Los 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.extent | 170 páginas | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.instname | Universidad Nacional de Colombia | spa |
| dc.identifier.reponame | Repositorio Institucional Universidad Nacional de Colombia | spa |
| dc.identifier.repourl | https://repositorio.unal.edu.co/ | spa |
| dc.identifier.uri | https://repositorio.unal.edu.co/handle/unal/89535 | |
| dc.language.iso | eng | |
| dc.publisher | Universidad Nacional de Colombia | |
| dc.publisher.branch | Universidad Nacional de Colombia - Sede Bogotá | |
| dc.publisher.faculty | Facultad de Ciencias Agrarias | |
| dc.publisher.place | Bogotá, Colombia | |
| dc.publisher.program | Bogotá - Ciencias Agrarias - Maestría en Geomática | |
| dc.relation.indexed | Agrosavia | |
| dc.relation.indexed | Agrovoc | |
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| dc.rights.accessrights | info:eu-repo/semantics/openAccess | |
| dc.rights.license | Reconocimiento 4.0 Internacional | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
| dc.subject.agrovoc | Calidad del alimento | spa |
| dc.subject.agrovoc | food quality | eng |
| dc.subject.agrovoc | Espectroscopia | spa |
| dc.subject.agrovoc | spectroscopy | eng |
| dc.subject.agrovoc | Daucus carota | spa |
| dc.subject.agrovoc | Comportamiento del consumidor | spa |
| dc.subject.agrovoc | consumer behaviour | eng |
| dc.subject.ddc | 630 - Agricultura y tecnologías relacionadas::633 - Cultivos de campo y de plantación | spa |
| dc.subject.proposal | Post-harvest quality | eng |
| dc.subject.proposal | Non-destructive | eng |
| dc.subject.proposal | Digital tools | eng |
| dc.subject.proposal | Artificial intelligence | eng |
| dc.subject.proposal | Geospatial technologies | eng |
| dc.subject.proposal | Spatial microscale | eng |
| dc.subject.proposal | Calidad poscosecha | spa |
| dc.subject.proposal | No destructivo | spa |
| dc.subject.proposal | Herramientas digitales | spa |
| dc.subject.proposal | Inteligencia artificial | spa |
| dc.subject.proposal | Tecnologías geoespaciales | spa |
| dc.subject.proposal | Microescala espacial | spa |
| dc.title | Modeling multidimensional quality in carrots from spectral responses, imaging, and consumer perception | eng |
| dc.title.translated | Modelacion de la calidad multidimensional en zanahorias a partir de respuestas espectrales, imágenes y percepción del consumidor | spa |
| dc.type | Trabajo de grado - Maestría | |
| dc.type.coar | http://purl.org/coar/resource_type/c_bdcc | |
| dc.type.coarversion | http://purl.org/coar/version/c_ab4af688f83e57aa | |
| dc.type.content | Text | |
| dc.type.driver | info:eu-repo/semantics/masterThesis | |
| dc.type.redcol | http://purl.org/redcol/resource_type/TM | |
| dc.type.version | info:eu-repo/semantics/acceptedVersion | |
| dcterms.audience.professionaldevelopment | Investigadores | |
| oaire.accessrights | http://purl.org/coar/access_right/c_abf2 | |
| oaire.fundername | Proyecto “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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