Piga, Antonio <1965- > and D'Aquino, Salvatore and Agabbio, Mario Carlo Salvatore and Emonti, Giuseppina and Farris, Giovanni Antonio (2000) Influence of storage temperature on shelf-life of minimally processed cactus pear fruits. Lebensmittel-Wissenschaft und-Technologie, Vol. 33 (1), p. 15-20. ISSN 0023-6438. Article.
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Cactus pear fruits (Opuntia ficus indica Mill, cultivar Gialla) were manually peeled, placed in polystyrene trays and packaged with a heat-shrinkable film, then kept at 4°C and 15°C for 11 d. After 4, 8 and 11 d chemical-physical, microbiological and sensorial parameters were determined, while in-package gas concentrations were measured daily. Chemical-physical and sensorial parameters did not show signixcant changes in 4°C-stored fruits until d 8, while those kept at 15°C experienced a dramatic increase in acidity, ethanol accumulation, strong ow-yavour development and loss of overall fruit freshness and xrmness. Microbiological growth rate was much higher at 15°C than at 4°C. Visible manifestation of moulds was detected on 4°C-stored fruits on d 11, while in the 15°C-stored fruit, fungi colonization had already started on the fourth day. Based on these results, we conclude that quality of peeled cactus pear fruits can be maintained at 4 3C for 8 d, while abuse of temperature (15°C) limits shelf-life to 4 d.
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