该研究以‘黄金’百香果为材料，进行不同剂量的UV-C照射处理（0、2.02、4.04和6.06 kJ/m2，0 kJ/m2为对照），20 ℃环境中贮藏18 d。贮藏第9天时，与对照相比，UV-C处理能显著抑制L*值的下降和b*值的上升（P<0.05），显著抑制可滴定酸（TA）和类黄酮含量的下降（P<0.05），保持a*值为负值，降低果实的腐烂指数和皱缩指数，2.02和4.04 kJ/m2剂量的UV-C处理果实后，维生素C（Vc）含量均显著高于对照（P<0.05），分别比对照高2.66和2.11 mg/100 g，2.02和6.06 kJ/m2处理果实的呼吸强度显著低于对照（P<0.05），分别比对照低7.84和16.96 mg CO2/g FW h，但都可溶性固形物（TSS）和总酚含量以及硬度值没有显著的影响（P<0.05），6.06 kJ/m2处理增加了细胞膜的透性，使总酚含量降低。综合来看，2.02 kJ/m2处理的效果较好，好于对照和其他剂量UV-C处理的效果，可作为有效处理为UV-C在百香果采后上的应用提供一定的理论指导。

In this study, ‘golden’ passion fruit was used as the experiment material, and different doses of UV-C treatment (0, 2.02, 4.04, and 6.06 kJ/m2; the sample subjected to 0 kJ/m2 UV-C as the control) were used to treat the fruits before they were stored at 20 ℃ for 18 d. Compared with the control, on the 9th day of storage, the UV-C treatment led to significant suppression on the decrease of L* value, the increase of b* value (P<0.05), and the decrease of titratable acid (TA) and flavonoid contents (P<0.05), while maintaining a* values as negative values and reducing the decay index and shrinkage index; The vitamin C contents of the fruits treated by UV-C at 2.02 or 4.04 kJ/m2 were 2.66 and 2.11 mg/100 g, respectively, which were higher than that of the control; The respiration rates of the fruits treated by UV-C at 2.02 or 6.06 kJ/m2 were 7.84 and 16.96 mg CO2/g FW h, respectively, which were lower than that of the control, although there was no significant effect on the content of total soluble solids, total phenolic content and firmness value (P<0.05); The UV-C treatment at 6.06 kJ/m2 increased cell membrane permeability and decreased total phenolic content. In general, the effect of the UV-C treatment at 2.02 kJ/m2 was better than those of the control and other UV-C treatments, thus can be used as an effective treatment to provide some theoretical guidance for the application of UV-C on postharvest passion fruit.

海南省自然科学基金项目（321MS0765）；农业农村部南亚热带果树生物学与遗传资源利用重点实验室开放课题（202104）；海南省热带园艺品质采后生理与保鲜重点实验室开放课题；海南大学协同创新中心项目（XTCX2022NYB07）