Food and Fermentation Industries >

2019 , Vol. 45 >Issue 21: 147 - 154

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.021282

Effects of exogenous melatonin treatment on fruit quality and ethanolmetabolism of ‘Aiyuan 38’ citrus

  • WANG Jing ,
  • HONG Min ,
  • FENG Yu ,
  • HE Mingyang ,
  • WANG Rikui ,
  • YU Zuixin ,
  • ZHOU Lian
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  • 1 (Citrus Research Institute, Chinese Academy of Agricultural Sciences, Chongqing 400712, China)
    2 (Citrus Research Institute, Southwest University, Chongqing 400712,China)
    3 (Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden,Chinese Academy of Sciences, Guangzhou 510650, China)

Received date: 2019-06-05

  Online published: 2019-11-15

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Abstract

To explore the effects of exogenous melatonin treatment on postharvest flavor and fruit quality in citrus fruit, ‘Aiyuan 38’ citrus after harvest were immersed with 1.0 g/L melatonin to determine the changes of fruit quality and relevant indicators of ethanol metabolism during storage at low temperature (6~8 ℃). The results showed that compared with the control group, the freshness and the Vitamin C (Vc) content of citrus were significantly increased by 21.40% and 8.85% (P<0.05), and melatonin maintained the soluble contents(TSS), and inhibited the respiratory intensity. On the 60th day of storage, the pyruvate content of citrus treated with melatonin increased by 17.42%, while the ethanol and acetaldehyde content decreased by 52.21% and 36.85% (P<0.05), respectively. In the meantime, the gene expression and enzymatic activities of pyruvate decarboxylase (PDC) and alcohol dehydrogenase (ADH) showed a downtrend. Treatment with melatonin at the concentration of 1.0 g/L can effectively reduce the accumulation of ethanol in citrus fruits and improve the fruit quality, which provides a theoretical reference for postharvest regulation of fruit flavor quality.

Key words： ‘Aiyuan 38’; citrus; melatonin; postharvest quality; ethanol metabolism

Cite this article

WANG Jing , HONG Min , FENG Yu , HE Mingyang , WANG Rikui , YU Zuixin , ZHOU Lian . Effects of exogenous melatonin treatment on fruit quality and ethanolmetabolism of ‘Aiyuan 38’ citrus[J]. Food and Fermentation Industries, 2019 , 45(21) : 147 -154 . DOI: 10.13995/j.cnki.11-1802/ts.021282

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