Postharvest evaluation of apples cv. Fuji coated with chitosan solution from filmogenic

Abstract

The covers can be used on fruits and vegetables in natura, because modifying the atmosphere around those avoiding physical and chemical changes. Thus, the present study aimed to evaluate the effect of filmogenic solution based on chitosan conservation at different times and temperatures of apples cv. Fuji. In addition to assessments rot incidence and qualitative changes the deposition surface was visualized in electron micrographs (SEM). The apples were coated with the solution in concentrations of 1 and 2%. Shortly after treatment, the apples were stored 0°C or 20°C for 5, 10 or 15 days plus two days to simulate commercialization. The use of filmogenic solution in apples stored at 0 °C maintained quality of apples regardless of concentration. Concentrations were effective in reducing weight loss and decay incidence. Apples coated with 2% solution showed better appearance providing more brightness in the fruit and maintaining ascorbic acid, acidity, the red color and soluble solids. The chitosan formed a protective layer homogeneous apples which was confirmed through electron micrographs.