Journal of Food, Agriculture and Environment
On-tree follow-up of apricot fruit development using a hand-held NIR instrument
Author(s):
Cédric Camps *,
Danilo ChristenRecieved Date: 2009-01-10, Accepted Date: 2009-04-18
Abstract:The follow-up of apricot fruit development on tree until harvest is of prime importance as it influences the fruit quality at harvest. Until now, fruit follow-up in the orchard depends mainly on the expert eye of the producer and no objective measurement exists to help the professional to monitor their orchard. In practice, a non-destructive helpful tool would be suitable for use in the field during fruit growing. The present study aimed at developing a hand-held near infrared spectroscopic technique to non-destructively follow the fruit development of two apricot varieties: Bergarouge and Harostar. To start with, a classification approach has been tested to characterize the fruit as a function of a given picking date during growing. Factorial discriminant analysis (FDA) applied to destructive measurements allowed the correct classification of 89% (Harostar) to 92% (Bergarouge) of fruits. Analyses performed on spectral data allowed the correct classification of 96% of fruits whatever the variety. Secondly, partial least squares (PLS) regressions were performed to determine the physico-chemical values during the fruit development. The soluble solids content was determined with a precision of 0.85°Brix and 1.47°Brix to Bergarouge and Harostar varieties, respectively. Firmness was determined with a precision of 2.7% and 6.2% to Bergarouge and Harostar varieties, respectively.
Keywords:Pre-harvest,
soluble solids content, acidity, firmness, orchard, apricot, non-destructive, near infrared spectroscopy, FDA, PLS, classification, quantitative predictionJournal: Journal of Food, Agriculture and Environment
Year: 2009
Volume: 7
Issue: 2
Category: Agriculture
Pages: 394-400
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