Improvement of Postharvest Fruit Quality in ‘Formosa’ Plums (Prunus salicina) after Treatment with 1-methylcyclopropene during Storage

다국어 초록 (Multilingual Abstract)

Plum is a climacteric fruit and softening is a serious problem for storage and transportation. Thus 1 μL?L<SUP>-1</SUP> of 1-methylcyclopropene (1-MCP) was applied to plums to prolong their shelf life and maintain quality. Japanese plums (Prunus salicina cv. Formosa) were stored at 20℃ and 0℃ for 14 days and 46 days respectively, with or without 1-MCP treatment. Fruits were treated with 1 μL?L-1 1-MCP at 10℃ for 24 h. Ethylene production and respiration rate were strongly inhibited in 1-MCP-treated fruits at 20℃. It was also observed that there was less ethanol and acetaldehyde evaporation in 1-MCP-treated fruits stored at 20℃ compared to those in control fruits not treated with 1-MCP. Fruit qualities, such as firmness, titratable acidity (TA), skin color, and decay, changed more slowly in 1-MCP-treated fruits stored at 20℃ than in untreated fruits. There were no differences in the ethylene production or respiration rate between the groups of fruits stored at 0℃ throughout the experiment. Chilling injury wa s also inhibited by the application of 1-MCP during storage at 0℃. When the fruits stored at 0℃ with or without 1-MCP were transferred to 20℃ after 25 days, the differences in ethylene production and respiration rate, firmness, TA, TSS, and acetaldehyde and ethanol evaporation between the initial (after being stored at 0℃ for 25 days) and the final measurements (after being stored at 0℃ for 25 days and then transferred to 20℃ for three days) were lower in 1-MCP treated fruits than in non-treated fruits. The postharvest application of 1-MCP in Formosa plums showed positive effects at both 0℃ and 20℃ storage conditions with regard to quality, such as low ethylene production and low respiration rates, firmness, TA, ethanol, and acetaldehyde evaporation, chilling injury, and decay.

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