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Journal of Food Science
Fishman, S., Dept. of Stat. and Operations Res., Agricultural Research Organization, Volcani Center, Bet Dagan 50 250, Israel
Rodov, V., Dept. Postharvest Sci. Fresh Produce, Agricultural Research Organization, Volcani Center, Bet Dagan 50 250, Israel
Ben-Yehoshua, S., Dept. Postharvest Sci. Fresh Produce, Agricultural Research Organization, Volcani Center, Bet Dagan 50 250, Israel
A mathematical model was developed to study the influence of film perforations on O2 concentration and relative humidity in the atmosphere in a package containing fresh fruits. The model included equations describing fruit respiration and transpiration as well as permeation of oxygen and water vapor through the perforated film. Closed-system experiments with mango fruit revealed a linear dependence of respiration rate on O2 concentration. The model allowed analytical computation of the time course of in-package O2 concentration and relative humidity, and the results were in good agreement with experimentally measured values. Perforations had a much more pronounced effect on O2 concentration than on relative humidity The model enabled practical predictions for designing modified-atmosphere packaging.
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Mathematical model for perforation effect on oxygen and water vapor dynamics in modified-atmosphere packages
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Fishman, S., Dept. of Stat. and Operations Res., Agricultural Research Organization, Volcani Center, Bet Dagan 50 250, Israel
Rodov, V., Dept. Postharvest Sci. Fresh Produce, Agricultural Research Organization, Volcani Center, Bet Dagan 50 250, Israel
Ben-Yehoshua, S., Dept. Postharvest Sci. Fresh Produce, Agricultural Research Organization, Volcani Center, Bet Dagan 50 250, Israel
Mathematical model for perforation effect on oxygen and water vapor dynamics in modified-atmosphere packages
A mathematical model was developed to study the influence of film perforations on O2 concentration and relative humidity in the atmosphere in a package containing fresh fruits. The model included equations describing fruit respiration and transpiration as well as permeation of oxygen and water vapor through the perforated film. Closed-system experiments with mango fruit revealed a linear dependence of respiration rate on O2 concentration. The model allowed analytical computation of the time course of in-package O2 concentration and relative humidity, and the results were in good agreement with experimentally measured values. Perforations had a much more pronounced effect on O2 concentration than on relative humidity The model enabled practical predictions for designing modified-atmosphere packaging.
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