Controlled atmosphere storage of rabbiteye blueberries enhances postharvest quality aspects |
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| Institution: | 1. Institute of Food and Processing, Liaoning Academy of Agricultural Sciences, Shenyang 110866, People''s Republic of China;2. Irradiation Center of Liaoning, Liaoning Academy of Agricultural Sciences, Shenyang 110866, People''s Republic of China |
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| Abstract: | Blueberries are highly perishable and therefore it is necessary to develop strategies to increase their storage life. Two rabbiteye cultivars (‘Centurion’ and ‘Maru’) were stored at 1.5 °C in either regular air or controlled atmosphere (2.5 kPa O2 + 15 kPa CO2) for up to 6 weeks. Measurements of firmness, soluble solids content, titratable acidity, weight loss, shrivel and blemishes were combined with determinations of antioxidant activities and total phenolic content. Weight loss and shrivel were not affected by storage atmosphere or storage duration. After 28 days, controlled atmosphere storage resulted in only half as much blemished fruit compared with storage in regular air. Additionally, fungal development in ‘Maru’ fruit was minimised by controlled atmosphere storage.Water-soluble extracts from ‘Centurion’ fruit had higher antioxidant activities and total phenolic content than those from ‘Maru’ fruit at harvest and after storage in regular air and controlled atmosphere. The highest increases in antioxidant activity and total phenolic content occurred during the additional 6 days of shelf-life at 20 °C. |
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