Piga, Antonio <1965- > and D'Aquino, Salvatore and Agabbio, Mario Carlo Salvatore and Angioni, M. (2000) Estensione della vita postraccolta di due varietà di pero estive del germoplasma autoctono con l'uso di trattamenti anaerobici. In: Biodiversità: germoplasma locale e sua valorizzazione: atti del 4. Convegno nazionale, 8-11 settembre 1998, Alghero, Italia. Sassari, Carlo Delfino editore. p. 321-325. ISBN 88-7138-191-2. Conference or Workshop Item.
Pear fruits of "Cabudraxia" and "Arriabi", two summer ripening cultivars of the Sardinian germplasm, were
exposed for 36 hours to N2 or air promptly after harvest and then transferred to 20°C and 70% of relative
humidity to allow ripening. Respiration rate and ethylene production were recorded daily, while firmness and
ethanol in the flesh were inspected at regular intervals. Taste tests were carried out by a panel of five tasters
who were required to express their preference between the two groups. Nitrogen exposed fruits lost firmness at a
lower rate than control fruits. Ethylene production was delayed by anaerobic treament and peaked five days
after non exposed fruits. Upon removal from treatment an ethanol accumulation in the fruit flesh of exposed
fruits was found, that promptly decreased during the ripening period, even if remained significantly higher than
control fruits. Nevertheless, judges preferred anaerobic exposed fruits. Similar results were obtained for both
cultivars. Thus, short term anaerobic exposition resulted in a drastic delay of fruit ripening and improved
sensory attributes of the fruits of the two appreciable local cultivars.
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