Influence of packaging film permeability and residual sulphur dioxide on the quality of pre-peeled potatoes |
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| Authors: | L. GIANNUZZI N. RODRIGUEZ N. E. ZARITZKY |
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| Affiliation: | Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), Facultad de Ciencias Exactas, Universidad National de La Plata, Calle 47 y 116-La Plata (1900), Pcia de Buenos Aires, Argentina. |
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| Abstract: | The effects of sodium bisulphite concentration and gas permeability of the packaging film on the surface colour, texture, exudate production and microbial growth of pre-peeled refrigerated potatoes were evaluated to determine shelf-life and the lowest level of preservative which could be used.
The product was packaged in polyethylene film, or in vacuo , using EVA-SARAN-EVA laminate and stored refrigerated. Polyethylene was not adequate in several aspects; packaging in oxygen barrier film allowed reduction of bisulphite levels, and vacuum packaging of 50 ppm bisulphite treated samples doubled the shelf-life of the product compared with aerobic packaging. |
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| Keywords: | Packaging pre-peeled potatoes sulphur dioxide |
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