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Non-destructive visible and NIR spectroscopy measurement for the determination of apple internal quality


  • Moons, E. , Sinnaeve, G. & Dardenne, P. (2000). Non-destructive visible and NIR spectroscopy measurement for the determination of apple internal quality In: XXV International Horticultural Congress, Herregods, M. Bruxelles - Belgium, Part 7: Quality of Horticultural Products, 56.
Type Book Section
Year 2000
Chapter title Non-destructive visible and NIR spectroscopy measurement for the determination of apple internal quality
Book title XXV International Horticultural Congress
Editor Herregods, M.
City Bruxelles - Belgium
Label U15-0722-Dardenne-2000
Recnumber 455
Volume Part 7: Quality of Horticultural Products
Pages 56
Isbn 978-90-66058-13-2
Abstract A non destructive automatic near infrared sensor would be greatly appreciated among package storage houses and great store market for grading apple according to their taste quality. For this purpose, a NIR spectrometer DA 7000 (Perten), a polychromatic spectrometer fitted with InGaAS diode array detectors has been tested. The measurement time and prediction only take 1 second and could even be lowered with the Perten on line software. The non destructive reflectance spectra are taken in the four equidistant locations along the equator on the whole apples. A modified partial least square regression method based on the NIR spectra (math treatment 2,4,4,1) and lab values, gave good results. Determination coefficients and standard errors of prediction for 300 apples were respectively : 0.86?0.45 for brix, 0.88 ? 1.33 ml of NaOH 0.1N for titrable acidity, 0.86 ? 0.56% for dry matter, 0.78 ? 0.10 for pH, 0.64 ? 0.74 kg/cm2 for firmness. A high correlation between the second derivative of spectra and diameter was also found : 0.87 ? 0.17 cm.
Author address Dardenne Pierre, Quality Department of Agro-food Products, Walloon Agricultural Research Centre (CRA-W), Chaussée de Namur, 24, B-5030 Gembloux, dardenne@cra.wallonie.be
Fichier U15-0722-Dardenne-2000.pdf
Lien http://www.actahort.org/books/517/517_56.htm
Authors Moons, E. , Sinnaeve, G. & Dardenne, P.