Journal
JOURNAL OF FOOD SCIENCE
Volume 68, Issue 2, Pages 608-612Publisher
WILEY
DOI: 10.1111/j.1365-2621.2003.tb05718.x
Keywords
strawberries (Fragaria spp.); food irradiation; edible coating; milk proteins; shelf life
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Gamma-irradiation and various edible coatings were tested on fresh strawberries (Fragaria spp.),for keeping fruit quality and extending shelf life. Four coatings based on milk protein were evaluated. In 1 experiment, coating formulation based on caseinate and/or strawberries were irradiated using a Co-60 source. Both gamma-irradiation treatment and edible coating process significantly delayed (pless than or equal to0.05) molds growth. Edible coating based on irradiated caseinate was more effective than that of unirradiated caseinate. In a 2nd experiment, 3 irradiated coatings based on calcium caseinate and whey proteins were evaluated. The coating formulation based on 1:1 caseinate-whey was found to be more effective than those based on calcium caseinate. Addition of calcium chloride or a mixture of pectin and agar increased the effectiveness of the coating by delaying molds' apparition.
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