Browning evaluation of ready-to-eat apples as affected by modified atmosphere packaging.

Soliva-Fortuny, R C; Grigelmo-Miguel, N; Odriozola-Serrano, I; Gorinstein, S; Martín-Belloso, O

Soliva-Fortuny, R C; Grigelmo-Miguel, N; Odriozola-Serrano, I; Gorinstein, S; Martín-Belloso, O.

Afiliación

Soliva-Fortuny RC; Department of Food Technology, UTPV-CeRTA, University of Lleida, Rovira Roure 177, 25198 Lleida, Spain.

J Agric Food Chem ; 49(8): 3685-90, 2001 Aug.

Article en En | MEDLINE | ID: mdl-11513648

RESUMEN

The color and polyphenol oxidase (PPO) activity of fresh-cut Golden delicious apples were evaluated throughout cold storage under modified atmospheres. The shelf life of cut apples was extended to several weeks, especially when an initial atmosphere of 90.5% N(2) + 7% CO(2) + 2.5% O(2) and plastic pouches of 30 cm(3)/cm(2) x bar x 24 h were used. Under these conditions, a maximum 62% PPO activity depletion was observed. In all cases, the faster the initial PPO activity decays, the less the color changes. A fractional conversion first-order model was proposed for predicting color changes in minimally processed apples. Browning was better described through lightness (L) (k(L) = 0.017 - 0.07 day(-1)) and color difference (Delta E*) values (k(Delta E) = 0.015 - 0.073 day(-1)), which fitted the model with enough accuracy.

Asunto(s)

Catecol Oxidasa/metabolismo; Embalaje de Alimentos/métodos; Frutas/enzimología; Atmósfera; Color; Conservación de Alimentos; Reacción de Maillard

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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Embalaje de Alimentos / Catecol Oxidasa / Frutas Tipo de estudio: Prognostic_studies Idioma: En Revista: J Agric Food Chem Año: 2001 Tipo del documento: Article País de afiliación: España Pais de publicación: Estados Unidos

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