Journal
CIENCIA E TECNOLOGIA DE ALIMENTOS
Volume 28, Issue 4, Pages 872-880Publisher
SOC BRASILEIRA CIENCIA TECNOLOGIA ALIMENTOS
DOI: 10.1590/S0101-20612008000400017
Keywords
apple; minimal processing; edible coating
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The effect of edible coatings on the preservation of the Minimally Processed (MP) Royal Gala apples under refrigerated storage for 13 days was studied. The treatments were: the control solution, preserving solution (1% of acid ascorbic; 0,5% of citric acid; 0,7% of NaCl; 0,25% of CaCl2), manioc starch (3%), and sodium alginate (2%) with CaCl2. The preserving solution decreased the respiratory and the ethylene production rate and showed a lighter pulp. The coatings decreased the respiratory rate by 38% and the ethylene production by 50%. The alginate was the most efficient, and it presented a better retention of moisture up to the 9th day of storage. The control presented less firmness at during storage, but the other treatments presented the opposite. Apples with alginate presented less acidity and a darker coloration because of the pH and the coloration of the filmogenic solution.
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