Food and Fermentation Industries >

2026 , Vol. 52 >Issue 9: 290 - 298

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.044017

UV-C irradiation-regulated physiological and molecular responses of Manaohong cherry fruit quality during storage

  • NIE Huali ,
  • JI Ning ,
  • LU Qingyun ,
  • LI Yuxin ,
  • WANG Rui ,
  • ZOU Wei ,
  • GAO Qi
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  • 1(College of Food Science and Engineering, Guiyang University, Guiyang 550005, China)
    2(Guizhou Key Laboratory of New Quality Processing and Storage of Ecological Specialty Food, Guiyang 550005, China)

Received date: 2025-07-23

  Revised date: 2025-10-10

  Online published: 2026-06-03

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Abstract

To evaluate the effects of varying UV-C doses on postharvest storage physiology of Manaohong cherry, fruits were exposed to 0.5, 1, 2 or 4 kJ/m2 UV-C and stored at (1.0±0.5) ℃ and (90±5)% RH for 20 d.At 5 d intervals, decay rate and firmness were recorded, and activities and relative expression levels of peroxidase (POD), polyphenol oxidase (PPO), superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) were measured.Correlation and principal component analyses were applied to examine relationships among these traits.Findings illustrated that all UV-C treatments reduced decay and delayed firmness loss;notably, the 2 kJ/m2 treatment maintained firmness at 1.24-fold that of the control at 20 d and exhibited a significantly lower decay rate than other doses.This dose also markedly enhanced POD, SOD, APX and CAT activities while inhibiting PPO activity, with corresponding genes upregulated to boost reactive oxygen species scavenging.Correlation and principal component analyses further identified SOD, APX, PPO, POD and CAT activities as key factors determining storage quality.Accordingly, UV-C irradiation at 2 kJ/m2 offers an effective means to preserve postharvest quality and extend the storage life of Manaohong cherry by modulating its antioxidant enzyme network and gene expression.

Key words： Manaohong cherry; UV-C irradiation; postharvest storage; antioxidant enzyme activity; gene expression

Cite this article

NIE Huali , JI Ning , LU Qingyun , LI Yuxin , WANG Rui , ZOU Wei , GAO Qi . UV-C irradiation-regulated physiological and molecular responses of Manaohong cherry fruit quality during storage[J]. Food and Fermentation Industries, 2026 , 52(9) : 290 -298 . DOI: 10.13995/j.cnki.11-1802/ts.044017

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