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Efecto del envasado individual con películas plásticas en la calidad de mandarinas Dancy almacenadas en refrigeración / Effect of individual seal packaging in plastic films on the quality of Dancy mandarins stored under refrigeration

Departamento de Graduados e Investigación en Alimentos, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Plan de Ayala y Carpio CP 11540, México D. F.

C. Saucedo-Veloz

Centro de Fruticultura, Colegio de Postgraduados, CP 56230, Chapingo, México

R. Arana-Errasquín

Departamento de Graduados e Investigación en Alimentos, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Plan de Ayala y Carpio CP 11540, México D. F.

Seal packaging of individual fruits of Dancy mandarin (Citrus reticulata) with polyolefin (0.019 mm) and PVC (0.025 mm) significantly delayed their deterioration, and maintained firmer fruits with bet ter appearance than non-sealed fruits. The films were applied to fruits that had received conventional treatments of washing and disinfection, after which the fruits were stored with non-sealed fruits under refrigeration conditions (5 and 10 °C) during eight weeks plus six days at 20 °C. The results showed that the weight loss and deformation were significantly reduced by the effect of plastic films, at both storage temperatures. Furthermore, significant reductions in the internal atmosphere (CO, content) and ethanol content were observed in sealed fruits. In the sensory evaluation, the juice of sealed fruits showed a fresh flavor at the end of storage, whereas the juice of non-sealed fruits held at 10 °C developed off-flavors. The ripening index (°Brix/acidity ratio) increased significantly only in sealed fruits held at 10°C. The color index was not significantly modified by the effect of plastic films. However, the vitamin C content was significantly lower in sealed fruits at both storage temperatures.

Key Words: mandarins • storage • seal packaging • plastic films

Food Science and Technology International, Vol. 5, No. 3, 215-222 (1999)
DOI: 10.1177/108201329900500303


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