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Agronomy 2019, 9(1), 10; https://doi.org/10.3390/agronomy9010010

Harvest Maturity Stage and Cold Storage Length Influence on Flavour Development in Peach Fruit

1
Department of Agricultural Sciences, Alma Mater Studiorum—University of Bologna, viale Fanin 46, 40127 Bologna, Italy
2
Genomics and Biology of Fruit Crops, Research and Innovation Centre, Fondazione Edmund Mach, Via Edmund Mach, 1, 38010 San Michele All’Adige, Trento, Italy
3
Agriculture Research Division, Plant Production Sciences, Department of Economic Development, Jobs, Transport and Resources, AgriBio Building, 5 Ring Road, Bundoora, VIC 3083, Australia
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 26 November 2018 / Revised: 16 December 2018 / Accepted: 28 December 2018 / Published: 30 December 2018
(This article belongs to the Section Horticultural and Floricultural Crops)
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Abstract

Peach market is facing a constant decrease due to the poor fruit quality perceived at consumption that might be greatly affected by fruit ripening stage at harvest and by the post-harvest management. The present work aimed at clarifying the influence of maturity at harvest on the evolution of peach aroma and quality during shelf-life after prolonged cold storage. “August Flame” peaches were harvested at three maturity stages, determined based on IAD (index of absorption difference) and ethylene emission. Fruit quality traits (firmness, soluble solids, titratable acidity), ethylene and volatile organic compound (VOC) emission were monitored during for four weeks of cold storage (0 °C). Every week of cold storage was followed by 6 days of shelf-life (18 °C). Ripening segregation at harvest based on IAD was successful since each maturity classes significantly differed based on all quality traits. Cold storage enhanced the aroma development of ‘August Flame’ peach, primarily by increasing the emission of esters and lactones associated with pleasant aroma. Moreover, cold storage also reduced the differences in aroma between the maturity classes. The role of ethylene, which was also influenced by cold storage, in regulating the VOCs emission is discussed. View Full-Text
Keywords: Prunus persica L. Batsch; volatile compounds; aroma; IAD; fruit maturity Prunus persica L. Batsch; volatile compounds; aroma; IAD; fruit maturity
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Ceccarelli, A.; Farneti, B.; Frisina, C.; Allen, D.; Donati, I.; Cellini, A.; Costa, G.; Spinelli, F.; Stefanelli, D. Harvest Maturity Stage and Cold Storage Length Influence on Flavour Development in Peach Fruit. Agronomy 2019, 9, 10.

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