Non-destructive follow-up of apricot fruit using hand-held Near Infrared spectroscopy | Suivi des abricots avant récolte par spectroscopie proche infrarouge portable
2009
Camps, C. | Christen. D., Station de recherche Agroscope Changins-Waedenswil ACW, Conthey (Switzerland). Centre de Conthey
Today, the evaluation of fruit maturity in orchard only rely on the expert eye of the producer. At harvest time, optimal maturity is estimated according to fruit calibre or background coloration of the skin. The obtention of a new and objective method able to follow fruit maturity until harvest would be advantageous. The aim of the presented trial was to evaluate the near infrared spectroscopy (NIR) ability to follow fruit development in orchard and to measure the physico-chemical quality of fruit during growing (soluble solids content and firmness). The obtained results showed that NIR was able to classify correctly about 99% of fruit according to several picking dates during fruit development. NIR measurement allowed also determinating flesh firmness with an error lower than 6.2%. Concerning soluble solids content, the level of prediction was correct for the Bergarouge variety (error = 0.85 °Brix) but unsatisfactory for the Harostar variety (error = 1.47 °Brix).
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