Effect of 1-Octylcyclopropene,as an Ethylene Action Inhibitor and Compared with 1-MCP,on Storage Quality of “Guifei” Mango Fruits in Cold Storage

Abstract:

Effect of 1-octylcclopropene(1-OCP) concentrations at room temperature for 20 h on the storage quality of post-harvest ‘Guifei’ mangoes(Mangifera indica L.) was investigated with comparison of the treatment with same concentrations of 1-MCP,a reported effective ethylene action inhibitor.Fruits were fumigated with 1 μL/L,5 μL/L or 50 μL/L 1-OCP or 1-MCP and then stored at low temperature(4±1 ℃,RH85%-90%) with every 3 fruits packed in a 0.02mm thick PE bag(240 mm ×190 mm) for ripening evaluation.Quality changes and relevant physiological responses were measured every 3 days during fruit storage.The results show that treatments with 50 μL/L 1-OCP or 5 μL/L 1-MCP significantly delayed the appearance of respiratory rate peak,fruit softening and decrease in titratable acid,postponed fruit weight-loss and increase in soluble solids content,inhibited PPO(polyphenol oxidase) and POD(peroxidase) activity and MDA accumulation.