Quality assessment of strawberries packed with perforated polypropylene punnets during cold storage
- Autores: R. Olías, A. G. Pérez, C. Sanz
- Localización: Food science and technology international = Ciencia y tecnología de alimentos internacional, ISSN-e 1532-1738, ISSN 1082-0132, Vol. 8, Nº 2, 2002, págs. 65-72
- Idioma: inglés
- Títulos paralelos:
- Evaluación de calidad de fresas en envases de polipropileno preparados durante el almacenamiento en frio
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Resumen
Strawberries stored in polypropylene packages with different perforation surfaces were maintained for three weeks at 2°C simulating long refrigerated transport or long cold storage. After 3 days at 2°C, CO 2 levels inside the packages were in the range of 1.5-2.6%, while O 2 contents were 17.8-18.9% for the three perforation surfaces under study. Gas levels remained practically unchanged for one week and then changed slowly such that at day 21 they were 7.2-8.8% and 13.6-14.9% for CO 2 and O 2 , respectively. There was a suitable fruit quality maintenance during the first 10 days at 2°C. After this period of time there was an increased risk of fruit quality impairment, with an increasing marketable fruit loss and off-flavors development, and a slight decrease of sugar and organic acids content. There were practically no differences among the three microperforated packages studied in terms of fruit quality during this recommended 10-day period at 2°C with low levels of marketable fruit loss, no signal of Botrytis infection, and only a slight decrease in sucrose content. Comparison with control fruits during the first 10 days at 2 °C showed practically no differences except for this microperforated packaging system being associated to lower anthocyanin content in the fruits. (A)
