1-MCP on physiological and postharvest quality of apples Eva during refrigerated stored/1-MCP nos aspectos fisiologicos e na qualidade pos-colheita de macas Eva durante o armazenamento refrigerado

The objective of this study was to investigate the effect of specific doses of the compound 1-methylcyclopropene (1MCP), after harvest, on the physiological and physicochemical quality of apples Eva during refrigerated storage. After applying thetreatment with different doses of 1-MCP (0, 10, 50, 100 and 500mg [L.sup.-1]), fruit were stored in cold 0.5[degrees]C ([+ or -] 0.5) for up to 135 days. The cold storage with the application of 1-MCP resulted in a lower production of ethylene in fruits treated with doses of 10, 50 and 100mg [L.sup.-1]. The control group lost 45% of its firmness, while the treated groups lost on average 27%o of their firmness the parameter C fruit color identified with a more intense color to the 135 days of storage and Hue angle showed that when treated with doses of 10 and 50mg [L.sup.-1], fruit showed more yellow, evidenced best action of 1-MCP at low concentrations. Fruit that have not undergone the treatments showed a higher ratio of soluble solids and acidity, thus demonstrating increased metabolic activity.