Food and Fermentation Industries >

2019 , Vol. 45 >Issue 9: 190 - 196

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.019568

Effects of exogenous methyl jasmonate on fruit qualities andantioxidases activities of postharvest kiwifruits

  • PAN Liuyi ,
  • ZHAO Xianyang ,
  • CHEN Ming ,
  • FU Yongqi ,
  • XIANG Miaolian ,
  • CHEN Jinyin
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  • 1(College of Agronomy, Jiangxi Agricultural University, Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables in Jiangxi Province, Jiangxi Key Laboratory for Postharvest Technology and Non-destructive Testing of Fruits & Vegetables, Nanchang 330045, China)
    2(Pingxiang University, Pingxiang 337055, China)

Received date: 2018-12-07

  Online published: 2019-06-06

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Abstract

This study aimed to investigate the effects of methyl jasmonate (MeJA) on the qualities and antioxidases activities of postharvest kiwifruits. The postharvest ‘Jinkui’ kiwifruits were fumigated with 0.1 mmol/L MeJA. Changes in fruit qualities and antioxidases activities during storage at (25±1)℃ were investigated. The results showed that compared against control, the rot rate and weight loss rate of MeJA-treated kiwifruits significantly reduced by 26.09% and 20.79%, respectively. The soluble solids content was maintained at a high level, the degradation rate of titratable acid was delayed, and the increase in respiratory intensity was inhibited. Moreover, MeJA promoted the accumulation and synthesis of total phenolic content, and reduced the content of malondialdehyde. The highest active values of catalase, peroxidase, and superoxide dismutase were 34.73%, 30.09%, and 2.70%, respectively, higher than those of control significantly. In comparison, the effects of MeJA on vitamin C, total sugar content and firmness were not significant. In summary, MeJA pretreatment could effectively maintain the quality of ‘Jinkui’ kiwifruits. This study provides theoretical basis and technical reference for storing and preserving postharvest kiwifruits.

Key words： kiwifruit; methyl jasmonate; storage quality; antioxidase activity

Cite this article

PAN Liuyi , ZHAO Xianyang , CHEN Ming , FU Yongqi , XIANG Miaolian , CHEN Jinyin . Effects of exogenous methyl jasmonate on fruit qualities andantioxidases activities of postharvest kiwifruits[J]. Food and Fermentation Industries, 2019 , 45(9) : 190 -196 . DOI: 10.13995/j.cnki.11-1802/ts.019568

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