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Title: Optimization of Modified Atmosphere Packaging for Sheep's Milk Semi-Hard Cheese Wedges during Refrigerated Storage: Physicochemical and Sensory Properties
Authors: Albisu, Marta; Nieto, Sonia; Martinez, Olaia; Bustamante, Maria Angeles; Barron, Luis Javier R.; Najera, Ana Isabel
Abstract: Modified atmosphere packaging (MAP) has become a good potential strategy to retain quality throughout the shelf life of perishable foods. The aim of this work was to evaluate different packaging atmospheres on semi-hard protected designation of origin Idiazabal cheese wedges. Six different packaging treatments (air, vacuum, and CO2/N-2 gas mixtures in the ratio of 20/80, 50/50, 80/20, and 100/0\% v/v, respectively) were studied. Changes in gas headspace composition, cheese gross composition, weight loss, pH, acidity, colour, and textural and sensory properties were investigated during 56 days of refrigerated storage at 5 +/- 1 degrees C. MAP was the most effective preserving technique compared to air- and vacuum-packaging treatments. The cheese characteristics with the greatest discriminating weight in the preservation techniques were paste appearance, holes, flavour, a{*} (redness) and b{*} (yellowness) colour parameters, and slope to hardness. Air-packaged cheeses, on 35 day, presented a mouldy flavour. Vacuum packaging affected paste appearance (greasy, plastic marks, and non-homogeneous colour) and holes (occluded and unnatural appearance) starting after 14 packaging days. MAP mixtures with CO2 concentration between 50/50 and 80/20\% CO2/N-2 (v/v) are recommended to ensure sensory quality and stability in the distribution of these raw sheep-milk cheese wedges.
Keywords: ripened cheese preservation; modified atmosphere packaging; vacuum; cheese wedges; sensory properties; CALCIUM LACTATE CRYSTALS; SHELF-LIFE; PARMIGIANO-REGGIANO; DAIRY-PRODUCTS; CARBON-DIOXIDE; CHEDDAR CHEESE; VACUUM; COLOR; QUALITY; TEXTURE
Issue Date: 2023
Publisher: MDPI
Type: Article
DOI: 10.3390/foods12040849
E-ISSN: 2304-8158
Appears in Publication types:Artículos científicos

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