Carrera Ingeniería en Alimentos

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Author: search.filters.author.Guamushig Tarco, Mayra AlexandraSubject: search.filters.subject.MANEJO POSTCOSECHA

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    Evaluación del efecto de un recubrimiento con Quitosano sobre la calidad postcosecha de la mora de Castilla (Rubus glaucus Benth)
    (Universidad Técnica de Ambato. Facultad de Ciencia e Ingeniería en Alimentos. Carrera de Ingeniería en Alimentos., 2017-09) Guamushig Tarco, Mayra Alexandra; Horvitz Szoiechet, Sandra
    The aim of this research was to evaluate the effect of the application of a chitosan coating on postharvest quality of blackberry (Rubus glaucus Benth).For the purpose of improving the physicochemical characteristics, maintain the bioactive compounds and prolong the Shelf life of the fruit. To provide at the consumers A better quality product and reduce postharvest losses. The analysis were in uncoated blackberries (control) and blackberries with chitosan coating. Physicochemical parameters such as pH, acidity, soluble solids, color (every 2 days), percentage of weight loss and texture (everyday), bioactive compounds such as vitamin C, polyphenols, anthocyanins and antioxidant activity color (every 3 days).In addition, the respiration rate of blackberries was measured every day. The results indicate that the coating did not affect the physicochemical characteristics because there was no significant difference between treatments for the majority of analyzes performed. The respiration rate was lower in the blackberries with chitosan coating and the antioxidant activity was higher in the first days of storage. However the application of the coating gives a better visual appearance to the fruit. The coated fruit is attractive to consumers, this could increase sales and reduce post-harvest losses. The storage in refrigeration allowed that the blackberries had a shelf life of seven days.