Effects of MAP and 1-MCP Treatments on the Quality of ‘Gampung’ Sweet Persimmon during a Simulated Marketing Period

In this study, we applied modified atmosphere packaging (MAP) and 1-methylcyclopropene (1-MCP) to postharvest 'Gampung' persimmons to maintain their quality and extend their distribution period during domestic distribution and export, aiming to develop better postharvest management techniques.The experiment included four groups: a no treatment group (Control) and treatment groups entitled MAP, 1-MCP, and 1-MCP + MAP.Simulated distribution conditions were based on the persimmon export process to Vietnam and consisted of nine days at 0C (cold storage), two hours at 30C, and 15 days at 20C (room temperature storage), for a total of 24 days.Quality changes were evaluated after cold storage (before and after transport) and at three day intervals during room temperature storage.As a result, two MAP treatments (MAP and 1-MCP + MAP) showed prominent effects in reducing weight loss, with the 1-MCP + MAP treatment demonstrating the most significant effect.During the storage period, the expression levels of ethylene biosynthesis genes and genes related to cell wall modification were effectively suppressed in both 1-MCP-treated groups (1-MCP and 1-MCP + MAP).Notably, the 1-MCP + MAP treatment exhibited excellent ethylene production and fruit-softening inhibition effects.Overall, the 1-MCP + MAP treatment effectively suppressed weight loss and maintained fruit quality during the simulated export distribution process.