The purpose of this study was to explore the effects of coating treatment using a composite of 1-methylcyclopropene (1-MCP), chitosan and natamycin (NATA) on the quality and antioxidant capacity of Chinese jujube (Zizyphus jujuba cv. Junzao) stored at different temperatures (Room temperature and 0 ± 1 °C). Respiration, ethylene release, and decay rates; Malondialdehyde (MDA); total phenol, flavonoid, and Ascorbic Acid (AsA) contents; Peroxidase (POD), Polyphenol Oxidase (PPO), Superoxide Dismutase (SOD), and Ascorbate Peroxidase (APX) activities; and free-radical scavenging ability were considered. The results showed that the low-temperature composite coating treatment of Chinese jujube effectively inhibits its decay and MDA accumulation; delays its respiration and ethylene release peaks; increases the activities of the antioxidant enzymes POD, SOD, and APX; and inhibits its PPO activity. Furthermore, the jujube retains its high concentrations of total phenols, flavonoids, and AsA as well as its free-radical-scavenging rate into the later storage period. Thus, the low-temperature composite coating treatment is an effective method for improving the postharvest quality of Chinese jujube and extending its preservation period.

本研究的目的是探讨使用 1-甲基环丙烯 (1-MCP)、壳聚糖和纳他霉素 (NATA) 的复合物进行涂层处理对储存于不同的温度（室温和 0 ± 1 °C）。呼吸、乙烯释放和衰减率；丙二醛（MDA）；总酚、类黄酮和抗坏血酸 (AsA) 含量；过氧化物酶 (POD)、多酚氧化酶 (PPO)、超氧化物歧化酶 (SOD) 和抗坏血酸过氧化物酶 (APX) 活性；并考虑自由基清除能力。结果表明，大枣低温复合涂层处理能有效抑制其腐烂和MDA积累；延迟其呼吸和乙烯释放峰值；增加抗氧化酶POD的活性，SOD 和 APX；并抑制其 PPO 活性。此外，大枣在贮藏后期仍保留其高浓度的总酚、黄酮类和 AsA 以及清除自由基的能力。因此，低温复合包衣处理是提高大枣采后品质，延长其保鲜期的有效方法。