Pectobacterium carotovorum subsp. carotovorum and Dickeya chrysanthemi have been reported to cause soft-rot diseases to fresh produces. The aim of this research was to investigate the inactivation efficacy of a 222 nm KrCl excimer lamp and 280 nm UVC-LED against P. carotovorum subsp. carotovorum and D. chrysanthemi on fresh produces. When samples were subjected to UVC treatment by a excimer lamp or UVC-LED at 450 mJ/cm², it was observed that soft-rot bacteria on the surface of iceberg lettuce, strawberry, and tomato were reduced by a maximum of 5, 3, and 5 log units, respectively. The surface properties of fresh products, such as hydrophobicity, roughness, and topographic image, were analyzed under the hypothesis that the characteristics of the sample surface affected the inactivation efficacy of the excimer lamp and UVC-LED. It was determined that there was an inverse correlation between the surface roughness and inactivation efficacy of UVC treatment. The texture properties of samples were not significantly different (P > 0.05) from those of untreated samples. The results of this research substantiate that the excimer lamp and UVC-LED can be applied to decontamination processes for inactivating soft-rot bacteria, thereby prolonging the shelf life of fresh produce and reducing economic losses.

食肉果胶杆菌亚种。据报道， carotovorum和Dickeya chrysanthemi会导致新鲜农产品发生软腐病。本研究的目的是研究 222 nm KrCl 准分子灯和 280 nm UVC-LED 对P. carotovorum subsp. 的灭活效果。carotovorum和D. chrysanthemi用于新鲜农产品。当样品通过准分子灯或 UVC-LED 以 450 mJ/cm ^{2进行 UVC 处理时}，据观察，卷心莴苣、草莓和番茄表面的软腐细菌最多分别减少了 5、3 和 5 个对数单位。在假设样品表面特性影响准分子灯和UVC-LED的灭活效果的假设下，分析了新鲜产品的表面特性，如疏水性、粗糙度和形貌图像。经确定，表面粗糙度与 UVC 处理的灭活效果之间存在负相关。样品的纹理特性没有显着差异（P > 0.05) 来自未经处理的样品。该研究结果证实，准分子灯和UVC-LED可应用于灭活软腐细菌的去污工艺，从而延长新鲜农产品的保质期，减少经济损失。