The objective of this study was to investigate the effects of high voltage electric field (HVEF) on the antioxidant system in stored pomegranate fruit. The experiments were conducted at cold storage for two months under three selected electric field levels (0, 1.5 and 3 kV/cm). Results showed that non-enzymatic antioxidant contents including phenols and ascorbic acid were better preserved by 1.5 kV/cm treatment than control after 60 days of storage. While the activities of superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) in pomegranate fruit were significantly enhanced with 1.5 kV/cm treatment compared to control, Guaiacol peroxidase (G-POX) levels in the control group increased steadily and were highest at the end of the storage. Although the results obtained from 3 kV/cm treatment were acceptable till the end of the first month, due to oxidative damage of reactive oxygen species (ROS) produced in response to HVEF stress, their results come close to the control group at the end of the second month. These data suggest that the optimum electric field intensity for enhancing antioxidant contents in stored pomegranate fruits was 1.5 kV/cm.

本研究的目的是研究高压电场 (HVEF) 对储存石榴果实中抗氧化系统的影响。实验在三个选定的电场水平（0、1.5 和 3 kV/cm）下在冷藏库中进行了两个月。结果表明，在储存 60 天后，1.5 kV/cm 处理比对照更好地保存了包括酚类和抗坏血酸在内的非酶抗氧化剂含量。与对照组相比，1.5 kV/cm 处理后石榴果实中超氧化物歧化酶（SOD）、过氧化氢酶（CAT）和抗坏血酸过氧化物酶（APX）活性显着增强，而对照组愈创木酚过氧化物酶（G-POX）水平升高稳定并在存储结束时最高。虽然3 kV/cm 处理的结果在第一个月末之前是可以接受的，但由于响应HVEF 应激而产生的活性氧(ROS) 的氧化损伤，他们在结束时的结果接近于对照组。第二个月。这些数据表明，提高储存石榴果实中抗氧化剂含量的最佳电场强度为 1.5 kV/cm。