A multipurpose portable instrument for determining ripeness in wine grapes using NIR spectroscopy

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dc.contributor.authorLarrain, Manuel
dc.contributor.authorGuesalaga, Andres R.
dc.contributor.authorAgosin, Eduardo
dc.date.accessioned2024-01-10T12:04:11Z
dc.date.available2024-01-10T12:04:11Z
dc.date.issued2008
dc.description.abstractThis paper describes the development of a noninvasive instrument that is designed to measure three parameters of ripeness in wine grapes, i.e., sugar (Brix), pH, and anthocyanin concentration. The instrument is based on near-infrared spectroscopy, and it comes in contact with the berry in the cluster without altering its ripening process. A thorough description of the calibration process for the instrument is done for the different grape varieties, e.g., Cabernet Sauvignon, Carmenere, Merlot, Pinot Noir, and Chardonnay. Samples from vineyards located in the Maipo Valley (Chile) taken during the 2003 season were processed to develop calibration models using partial least squares techniques. The models were validated in terms of root mean square error of validation and R-2 indices. The results show the great potential of this technique regarding Brix and pH measurements. For the anthocyanin concentration measurements, the results are promising but require an accurate procedure to obtain reference values for model calibration. The instrument can be useful for sampling strategies that look for optimum harvest schedules according to grape maturity in terms of not only sugar content but also pH and anthocyanin concentration.
dc.fechaingreso.objetodigital2024-05-23
dc.format.extent9 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1109/TIM.2007.910098
dc.identifier.eissn1557-9662
dc.identifier.issn0018-9456
dc.identifier.urihttps://doi.org/10.1109/TIM.2007.910098
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/75715
dc.identifier.wosidWOS:000252338000011
dc.information.autorucIngeniería;Agosin E;S/I;99630
dc.information.autorucIngeniería;Guesalaga A;S/I;63871
dc.information.autorucIngeniería;Larraín M;S/I;13919
dc.issue.numero2
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final302
dc.pagina.inicio294
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.revistaIEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
dc.rightsacceso restringido
dc.subjectanthocyanins
dc.subjectBrix
dc.subjectgrapes
dc.subjectnear infrared (NIR)
dc.subjectpH
dc.subjectripeness
dc.subjectspectroscopy
dc.subjectNEAR-INFRARED-SPECTROSCOPY
dc.subjectNONDESTRUCTIVE DETERMINATION
dc.subjectSUGAR CONTENT
dc.subjectFRUIT
dc.subject.ods02 Zero Hunger
dc.subject.odspa02 Hambre cero
dc.titleA multipurpose portable instrument for determining ripeness in wine grapes using NIR spectroscopy
dc.typeartículo
dc.volumen57
sipa.codpersvinculados99630
sipa.codpersvinculados63871
sipa.codpersvinculados13919
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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