Effects of Ultraviolet-C Treatment on the Storage Quality and Postharvest Physiology of'Golden'Passion Fruit
JIA Wenjun
LIU Chuanhe
WANG Yu
DENG Yun
FENG Xuemin
Abstract：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 valuesand 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.
Keywords：UV-C treatmentpassion fruitstorage after harvestindex of shrinkage
Publication Date：2025-01-14
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 136-144 )