Maturity at harvest greatly affects kiwifruit storage potential and quality at consumption: if fruit are picked too early, in fact, they undergo a early softening during storage, and do not reach full flavour and aroma traits. In Actinidia deliciosa fruits, dry matter has been recently proposed as maturity index instead of soluble solid content. In Actinidia chinensis fruits, the optimal harvest time is determined on the basis of flesh colour, which is one of the quality trait the consumer appreciate the most. In the present work, spectroscopy in the visible/near infrared (vis/NIR) wavelength range was used for the non-destructive determination of the ripening stage of fruits in Actinidia deliciosa cv Hayward and of the flesh colour of Jintao fruit (Actinidia chinensis). For this purpose, during fruit development, an index derived from the Absorbance Difference (AD index) between wavelengths near the chlorophyll-a peak was related to flesh colour, measured by using a colorimeter, and other fruit quality traits. Results obtained indicate that, although further researches are needed, this relationship could be a reliable index to monitor kiwifruit development and to assess the optimal harvest time.

Il DA-meter, una strumentazione non distruttiva per determinare il momento di raccolta e lo stadio di maturazione dei frutti di Actinidia deliciosa ed Actinidia chinensi

NOFERINI, MASSIMO;PICCININI, LUCIA;BONORA, ELISA;FIORI, GIOVANNI;COSTA, GUGLIELMO
2009

Abstract

Maturity at harvest greatly affects kiwifruit storage potential and quality at consumption: if fruit are picked too early, in fact, they undergo a early softening during storage, and do not reach full flavour and aroma traits. In Actinidia deliciosa fruits, dry matter has been recently proposed as maturity index instead of soluble solid content. In Actinidia chinensis fruits, the optimal harvest time is determined on the basis of flesh colour, which is one of the quality trait the consumer appreciate the most. In the present work, spectroscopy in the visible/near infrared (vis/NIR) wavelength range was used for the non-destructive determination of the ripening stage of fruits in Actinidia deliciosa cv Hayward and of the flesh colour of Jintao fruit (Actinidia chinensis). For this purpose, during fruit development, an index derived from the Absorbance Difference (AD index) between wavelengths near the chlorophyll-a peak was related to flesh colour, measured by using a colorimeter, and other fruit quality traits. Results obtained indicate that, although further researches are needed, this relationship could be a reliable index to monitor kiwifruit development and to assess the optimal harvest time.
2009
Noferini M.; Piccinini L.; Bonora E.; Fiori G.; Costa G.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/82384
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