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Memorias de investigación
Ponencias en congresos:
MONITORING OF FRESH-CUT SPINACH LEAVES THROUGH MULTISPECTRAL VISION AND SENSORY EVALUATION
Año:2011
Áreas de investigación
  • Tecnología de alimentos,
  • Agricultura,
  • Ingenierías
Datos
Descripción
The aim of this work was to compare an image algorithm to detect changes in quality related with changes in leaf pigments content in leafy spinach during storage with a visual evaluation using a 1-4 scale, where 1 corresponds to fresh samples without any spoilage and 4 to samples with severe deterioration, in order to obtain a sensory evaluation index (ISE) for each sample. The experiment was carried out on packed ready-to-use spinach stored at 4.5°C or 10ºC. Seventy-five leaves of spinach were analyzed at zero time and after 7, 14 and 21 days of storage at 4.5º C. Twenty-four e samples were measured at zero time and after 3, 6 and 9 days of storage at 10º C. Multispectral images were acquired in the red (R, 680±20 nm), infrared (IR, 800±20 nm) and blue (B, 450±20 nm) regions. Virtual images were calculated on the basis of spectral indexes usually employed for estimation of leaf pigment content. By considering the sensitive bands to chlorophyll, new virtual images were proposed. A non-supervised classification was applied to the obtained virtual images and the results were evaluated according to colorimetric measurements (CIE L*a*b* coordinates) and visual evaluation. Virtual images computed from R and B ranges gave the better results detecting changes in quality along period storage at 4.5º C. These virtual images were able to classify samples into two reference classes, including respectively the major part of the samples analyzed on zero time and on the 7th day and samples analyzed on the 14th and the 21th days.
Internacional
Si
Nombre congreso
2011 CIGR SECTION VI INTERNATIONAL SYMPOSIUM
Tipo de participación
960
Lugar del congreso
NANTES (FRANCIA)
Revisores
Si
ISBN o ISSN
9788439723394
DOI
Fecha inicio congreso
18/04/2011
Fecha fin congreso
20/04/2011
Desde la página
123
Hasta la página
123
Título de las actas
2011 CIGR SECTION VI INTERNATIONAL SYMPOSIUM
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Loredana Lunadei . (UPM)
  • Autor: Lourdes Lleo Garcia (UPM)
  • Autor: Belen Diezma Iglesias (UPM)
  • Autor: Margarita Ruiz Altisent (UPM)
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  • Creador: Grupo de Investigación: LPF-TAGRALIA: Técnicas Avanzadas en Agroalimentación
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