Non destructive measurement of tomato quality by portable near infrared spectroscopy | Mesure non destructive de la qualité des tomates par spectroscopie NIR
2010
Camps, C., Station de recherche Agroscope Changins-Waedenswil ACW, Conthey (Switzerland)
The research station of Agroscope ACW initiates the development of a nondestructive method for measuring tomato quality by portable near infrared spectroscopy (NIR). The soluble solids content, firmness and two components of the background color L and a corresponding to the lightness and to the «red/magenta and green» axis were measured on 38 fruits chosen for their difference in maturity. Statistical models based on partial least squares regression method were developed to correlate NIR measurement with fruit quality. The results show that soluble solids content and firmness can be determined with an accuracy of 0.4 % Brix and 5 Durofel units. Regarding the determination of color components, models present particularly precise results with correlation coefficient values of 0.95 and 0.92 for L and a, respectively.
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