MODIFIED ATMOSPHERE PACKAGING of SWEET CORN ON COB |
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| Authors: | J MORALES-CASTRO MA RAO JH HOTCHKISS DL DOWNING |
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| Affiliation: | Department of Food Science &Technology Cornell University, Geneva, NY 14456–0462;Department of Food Science, Stocking Hall Cornell University, Ithaca, NY 14853 |
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| Abstract: | Respiration rates (RR) of two varieties of sweet corn on cob were determined at O2 concentrations: 5, 10, 15, and 21% and CO2: 0, 5, and 10%, and temperatures: 2, 12, and 25C. Temperature and O2 had strong influence on RR. Activation energies for effect of temperature on RR(O2) and RR(CO2) were, 44.6 and 104.4 kJ/mole, respectively. At 12C, to maintain 4% O2 and 6% CO2 in a package 10.8 cm2 area, with 1.12 kg of corn, the estimated film permeabilities were 14 ml O2/h.cm2 and 65 ml CO2/h.cm2, respectively. Experimental and theoretical transient gas concentrations using microporous films were in reasonable agreement, but the desired O2 and CO2 levels were not achieved. |
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