Abstract

The postharvest performance of two intermediate moisture fruits, peach(Prunus persica (L.) Batsch 'Giallone') and prune (Prunus domestica L. 'Stanley'),was evaluated. Fruit were washed, cut (peach into slices, prune into halves), stoned,dipped in 2% (w/v in water) acid solutions (ascorbic acid for peach, citric acid forprune), and sonicated in ultrasonic bath with a 45%(w/v in water) fructose solution.After this pretreatment, fruit pieces were dried with heat pump technologyequipment. Semi-dried fruit pieces were packed in polypropylene trays sealed with acomposite covering plastic film with a partial vacuum (P=450 mm Hg) airatmosphere. In order to test postharvest performance in both refrigerated andunrefrigerated conditions, products were stored at 4±1 or 18±1°C for 60 days. After0, 20, 40, and 60 days in storage, visual and sensorial scores, colour, texture, aw,sugars, phenolic content, antioxidant activity, polygalacturonase activity, andmicrobial growth were evaluated. Peach and prune pieces stored in unrefrigeratedconditions showed serious decay symptoms already after 20 days in storage;whereas, semi-dried fruit pieces stored at 4°C preserved their physical, sensorial,biochemical, and microbiological properties until 40 days in storage. After 60 daysin storage, only peaches still maintained minimally acceptable quality; on thecontrary, prunes were unmarketable.

Autore Pugliese

• Di Venere Donato , Sergio Lucrezia , Pieralice Maria , Linsalata Vito

Tutti gli autori

• L. Sergio; L. Spremulli; M.A. Gatto; M. Pieralice; V. Linsalata; G. La Sala; D. Di Venere

Titolo volume/Rivista

Non Disponibile

Anno di pubblicazione

2015

ISSN

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ISBN

978-94-62610-62-0

Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Settori ERC

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Codici ASJC

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