Abstract ‘Youhou’, one of the main varieties of sweet persimmon in China, produces fruit that softens easily after harvest. Low temperature can postpone the fruit-ripening process while causing chilling injury (CI) due to susceptibility to cold. In this study, we investigated the effects of 1-methylcyclopropene (1-MCP) and combined modified atmosphere packaging (MAP) and 1-MCP treatments on the CI of ‘Youhou’ sweet persimmon during storage at 1 °C. Flesh browning and gelling were inhibited by 1-MCP treatment, as indicated by the suppression of polyphenol oxidase and peroxidase activities and enhanced pectin solubility. After treatment, the fruits maintained good membrane status and showed lower lipoxygenase activity, less electrolyte leakage and a lower malondialdehyde content than the control fruits. When MAP was added, dramatic changes in the oxygen and carbon dioxide proportions were detected in the packaging bag. This combined treatment was more effective than the 1-MCP treatment in alleviating CI.

中文翻译：

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气调包装和1-甲基环丙烯减轻'油厚'甜柿冷库冷害

摘要 '油厚'是我国甜柿的主要品种之一，果实采收后易变软。低温会推迟果实成熟过程，同时由于对寒冷的敏感性而导致冷害 (CI)。在本研究中，我们研究了 1-甲基环丙烯 (1-MCP) 和气调包装 (MAP) 和 1-MCP 联合处理对 1°C 储存期间“油厚”甜柿 CI 的影响。1-MCP 处理抑制了肉褐变和胶凝，如多酚氧化酶和过氧化物酶活性的抑制以及果胶溶解度的提高所示。处理后，果实保持良好的膜状态，与对照果实相比，脂肪氧化酶活性较低，电解质泄漏较少，丙二醛含量较低。添加 MAP 时，在包装袋中检测到氧气和二氧化碳的比例发生了巨大变化。这种联合治疗在缓解 CI 方面比 1-MCP 治疗更有效。