1-MCP nos aspectos fisiológicos e na qualidade pós-colheita de maçãs Eva durante o armazenamento refrigerado

Abstract

The objective of this study was to investigate the effect of specifi c doses of the compound 1-methylcyclopropene (1- MCP), 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 -1 ), fruit were stored in cold 0.5°C (±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 -1 . The control group lost 45% of its fi rmness, while the treated groups lost on average 27% of their fi rmness the parameter C fruit color identifi ed 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 -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.