Abstract This work was designed to assess the effects of acidic electrolyzed water (AEW) on disease occurrence, disease-resistant enzymes activities, H2O2 content, as well as the ROS scavenging systems in longans during postharvest storage. The harvested ‘Fuyan’ longan fruit were immersed in AEW with ACC of 80 mg/L at pH 2.5 for 10 min, and then stored at 25 °C. Results suggested that AEW treatment suppressed the occurrence of fruit disease, promoted the activities of PAL, CHI, GLU, C4H and 4-CL, and boosted the amount of H2O2. In addition, AEW treatment decreased the production of O2− generation rate and MDA content, increased the activities of antioxidant enzymes (e.g. SOD, CAT and APX), and maintained high levels of non-enzymatic antioxidant systems (e.g. AsA, GSH, DPPH radical scavenging ability and reducing power). These results revealed that AEW may be an effective treatment to enhance the fruit disease resistance and ROS scavenging capacity for suppressing the disease development of postharvest longans.

中文翻译：

---

酸性电解水处理通过诱导抗病性和维持活性氧代谢系统延缓收获龙眼果实病害的发展

摘要 本工作旨在评估酸性电解水 (AEW) 对龙眼采后贮藏期间病害发生、抗病酶活性、H2O2 含量以及 ROS 清除系统的影响。将收获的‘扶延’龙眼果实浸入 ACC 为 80 mg/L、pH 2.5 的 AEW 中 10 分钟，然后在 25°C 下储存。结果表明，AEW处理抑制了果实病害的发生，促进了PAL、CHI、GLU、C4H和4-CL的活性，增加了H2O2的含量。此外，AEW 处理降低了 O2− 生成率和 MDA 含量，增加了抗氧化酶（如 SOD、CAT 和 APX）的活性，并保持了高水平的非酶抗氧化系统（如 AsA、GSH、DPPH 自由基）清除能力和还原能力）。