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Quality and antioxidant properties of fresh-cut apple wedges from 10 cultivars during modified atmosphere packaging
C Rössle1, T R Gormley, N Brunton
1Ashtown Food Research Centre, Ashtown, Dublin 15, Ireland. christian.roessle@teagasc.ie
Abstract:
Antioxidant activity and quality parameters of skin-on apple wedges from 10 cultivars were examined during chill storage and over two growing seasons. Storage of fresh-cut apple wedges had a significant impact on quality parameter indices such as browning index (p < 0.001) and texture firmness (p < 0.001). Headspace gas analysis indicated that the degree of browning negatively correlated to oxygen (-0.69) and positively (0.70) correlated to carbon dioxide levels. Antioxidant capacity as assessed by three in vitro methods (DPPH, FRAP and ORAC) decreased significantly for 9 of the 10 cultivars after 5 days of storage at 3 ± 1 °C (p < 0.001). These indices increased in case of Shampion apples over the same storage period for all three assays. With regard to antioxidant capacity and quality parameters, the cultivars Gloster, Alwa, Idared and Jonica were the best performing overall and could therefore be recommended as a core ingredient in fresh-cut fruit products.
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