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Enhancing the Postharvest Stability of Hass Avocado Through Vacuum Impregnation with Antioxidants
Tania María Guzmán-Armenteros1, Armando Echeverría2, Jenny Ruales3
1Carrera de Ingeniería en Alimentos, Facultad de Ingeniería Mecánica y Ciencias de la Producción, Escuela Superior Politécnica del Litoral, Campus Gustavo Galindo, km 30.5 Vía Perimetral, Guayaquil 090902, Ecuador.
Abstract:
This study assessed the effect of vacuum impregnation with antioxidants on the postharvest quality of Hass avocados. Fruits were treated with 1% calcium lactate + 1% ascorbic acid (T1) or 1% calcium lactate + 1% citric acid (T2), under 1 bar for 30 s, and compared with untreated controls. Physicochemical properties, enzymatic activity, color, texture, and sensory quality were monitored during 18 days at 12 °C (±1). Both treatments reduced weight and firmness loss, inhibited polyphenol oxidase activity, and delayed browning. Shelf life was extended to ~9.4 days (T1) and ~10.1 days (T2) compared with 6.99 days in controls. These results show that vacuum impregnation with organic acids moderately improves avocado preservation under refrigerated storage.
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