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Modified Atmosphere Packaging Of Strawberry Fruit: Effect Of Package Perforation On Oxygen And Carbon Dioxide / Envasado De Fresas En Atmósfera Modificada: Efecto De La Perforación Del Envase En El Contenido De Oxígeno Y Dióxido De Carbono

C. Sanz, A.G. Perez, R. Olias, J.M. Olias

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The effect of film perforation on gas content during modified atmosphere packaging of strawberry fruit was studied. Camarosa strawberries were refrigerated at 2 °C, and wrapped with polypropy lene (PP) film with perforations of 1 and 2 mm diameter. Fruits were held at 2 °C during three days, simulating refrigerated transport, and then at 20 °C for four days to simulate retail display tempera tures. Perforation degree affected final gas contents inside the packages, ranging from 5.68-25.96% CO2 and from 4.84-15.69% O2 on day 7. Different gas content profiles were found among packages with similar perforated surface but distinct diameter perforations, which could infer a perforation edge effect on gas exchange. Neither a CO, stratification effect nor a gas exchange site effect were observed for this kind of perforation-mediated modified atmosphere packaging of strawberries.