Non-destructive optical characterisation of fruits with time-resolved reflectance spectroscopy.

Cubeddu, Rinaldo; Pifferi, Antonio; Taroni, Paola; Torriceli, Alejandro; Valentini, Gianluca; Ruiz-Altisent, Margarita; Valero Ubierna, Constantino y Ortiz Sanchez, Mª Coral (1999). Non-destructive optical characterisation of fruits with time-resolved reflectance spectroscopy.. En: "9 th. International Conference on Near Infrared Spectroscopy", junio,1999, Verona (Italia).

Descripción

Título: Non-destructive optical characterisation of fruits with time-resolved reflectance spectroscopy.
Autor/es:
  • Cubeddu, Rinaldo
  • Pifferi, Antonio
  • Taroni, Paola
  • Torriceli, Alejandro
  • Valentini, Gianluca
  • Ruiz-Altisent, Margarita
  • Valero Ubierna, Constantino
  • Ortiz Sanchez, Mª Coral
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 9 th. International Conference on Near Infrared Spectroscopy
Fechas del Evento: junio,1999
Lugar del Evento: Verona (Italia)
Título del Libro: International Conference on Near Infrared Spectroscopy
Fecha: 1999
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Ingeniería Rural [hasta 2014]
Grupo Investigación UPM: LPF-TAGRALIA
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Increasing attention is being paid to the possible development of non-invasive tests for the assessment of the quality of fruits We propose a novel non-destructive method for the measurement of the internal optical properties of fruits and vegetables by means of time resolved reflectance spectroscopy in the visible and NIR range. A fully automated instrumentation for time-resolved reflectance measurements was developed It is based on mode-locked laser sources and electronics for time-correlated single photon counting, and provides a time-resolution of 120-160 ps The system was used to probe the optical properties of several species and varieties of fruits and vegetables in the red and NIR range (650-1000 nm). In most fruits, the absorption line shape is dominated by the absorption peak of water, centred around 970 nm Generally, the absorption spectra also show the spectral features typical of chlorophyll, with maximum at 675 nm In particular, for what concerns apples, variations in peak intensity are observed depending on the variety, the degree of ripeness as well as the position on the apple. For all the species and varieties considered, the transport scattering coefficient decreases progressively upon increasing the wavelength.

Más información

ID de Registro: 23432
Identificador DC: http://oa.upm.es/23432/
Identificador OAI: oai:oa.upm.es:23432
Depositado por: Servicio Biblioteca Universitaria
Depositado el: 08 Abr 2014 10:30
Ultima Modificación: 21 Abr 2016 23:06
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