Post-harvest evaluation of oranges stored with coating agents

The objective of this research was to increase the life span of local oranges through hydrocolloid coatings and control of postharvest storage temperatures. We considered three types of coating and a control treatment, in combination with two temperature levels for storage (25°C±3°C y 8°C±2°C). Coatings were made from various hydrocolloid matrixes (carboxymethylcellulose, hydroxypropylmethylcellulose and unflavored gelatin), glycerol (used as a plasticizer) and water (used as a solvent). All coatings were applied through immersion. Treatments were arranged in a Completely Randomized Design. We evaluated the following physical-chemical dependent variables: soluble solids, total acidity, pH, degree of ripeness, physiological weight loss and freeze damage. We concluded that post-harvest storage at 8°C±2°C temperature had a positive effect on the life span of oranges keeping them in good conditions for up to 8 weeks. At room temperature, the fruit completely decayed in the sixth week. Coatings had less effect on organoleptic quality during the storage process.

• 1. Verfasser: Loor Cusme, Rosanna Katerine (author)
• Weitere Verfasser: Mesías Gallo, Freddy Wilberto (author), Prado Cedeño, Ángel del Jesús (author), Molina García, María Alexandra (author), Montesdeoca Villavicencio, Carmen María (author)
• Format: article
• Sprache: spa
• Veröffentlicht: 2016
• Schlagworte: Vida útil; postcosecha; almacenamiento; recubrimiento; temperatura; Life span; post-harvest; storage; coating; temperature
• Online Zugang: https://revistasespam.espam.edu.ec/index.php/Revista_ESPAMCIENCIA/article/view/121