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MODIFIED ATMOSPHERE PACKAGING of SWEET CORN ON COB
Author(s) -
MORALESCASTRO J.,
RAO M.A.,
HOTCHKISS J.H.,
DOWNING D.L.
Publication year - 1994
Publication title -
journal of food processing and preservation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.511
H-Index - 48
eISSN - 1745-4549
pISSN - 0145-8892
DOI - 10.1111/j.1745-4549.1994.tb00252.x
Subject(s) - modified atmosphere , microporous material , chemistry , atmosphere (unit) , zoology , respiration , oxygen , food science , horticulture , analytical chemistry (journal) , botany , environmental chemistry , biology , thermodynamics , organic chemistry , physics , shelf life
Respiration rates (RR) of two varieties of sweet corn on cob were determined at O 2 concentrations: 5, 10, 15, and 21% and CO 2 : 0, 5, and 10%, and temperatures: 2, 12, and 25C. Temperature and O 2 had strong influence on RR. Activation energies for effect of temperature on RR(O 2 ) and RR(CO 2 ) were, 44.6 and 104.4 kJ/mole, respectively. At 12C, to maintain 4% O 2 and 6% CO 2 in a package 10.8 cm 2 area, with 1.12 kg of corn, the estimated film permeabilities were 14 ml O 2 /h.cm 2 and 65 ml CO 2 /h.cm 2 , respectively. Experimental and theoretical transient gas concentrations using microporous films were in reasonable agreement, but the desired O 2 and CO 2 levels were not achieved.