Impact of pulsed light treatments on quality characteristics and oxidative stability of fresh-cut avocado
Fresh-cut avocado pieces were subjected to pulse light (PL) treatments on both sides (3.6, 6.0 and 14 J/cm2 per side) with the purpose of evaluating their effect on the microbial burden, color, chlorophyll stability and lipid oxidation for 15 days of storage at 4 °C. Exposure of fresh-cut avocado to...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10459.1/469120 |
| Acceso en línea: | https://doi.org/10.1016/j.lwt.2014.04.049 https://hdl.handle.net/10459.1/469120 http://hdl.handle.net/10459.1/469120 |
| Access Level: | acceso abierto |
| Palabra clave: | Pulsed light Fresh-cut avocados Microbiological stability Chlorophylls Lipid oxidation |
| Sumario: | Fresh-cut avocado pieces were subjected to pulse light (PL) treatments on both sides (3.6, 6.0 and 14 J/cm2 per side) with the purpose of evaluating their effect on the microbial burden, color, chlorophyll stability and lipid oxidation for 15 days of storage at 4 °C. Exposure of fresh-cut avocado to the highest dose led to the highest reductions in aerobic mesophylic microorganisms (1.20 log CFU/g) and inhibited the proliferation of yeasts and molds for 3 days, prolonging their microbiological shelf life up to 15 days. Hue values of fresh-cut avocados were better maintained after applying PL treatments. This behavior was partially related with the high chlorophyll retention observed in the same PL-treated samples. In fact, an increment up to around 1.3-fold of chlorophyll a and b was observed after applying 6.0 J/cm2 to fresh-cut avocados. The lipidic fraction of fresh-cut avocados subjected to PL treatments exhibited minimal peroxide formation and stable specific extinction coefficients at 232 and 272 nm for 15 days. These results indicate that the treatments did not result in an increase of rancidity processes, which remained at the induction stage. |
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