Food and Fermentation Industries >

2022 , Vol. 48 >Issue 2: 198 - 204

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.027111

Effects of melatonin treatment on postharvest physiology and storage quality of goji berry

  • DENG Shufang ,
  • WANG Peng ,
  • ZHANG Huaiyu ,
  • LEI Haolin ,
  • CUI Meili ,
  • MA Wenping ,
  • WANG Junjie
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  • 1(Key Laboratory of Storage and Processing of Plant Agro-Products, North Minzu University, Yinchuan 750021, China)
    2(College of Biological Science and Engineering, North Minzu University, Yinchuan 750021, China)
    3(School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China)

Received date: 2021-02-22

  Revised date: 2021-04-02

  Online published: 2022-02-28

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Abstract

To explore the effect of exogenous melatonin (MT) treatment on the postharvest physiology and quality of fresh goji berry stored at low temperature, ‘Ningqi-5’ goji fruit were soaked with MT at 0 (control check, CK), 25, 50 and 75 μmol/L, respectively. Subsequently, the changes of physiological and quality indicators including respiration rate, ethylene release rate, the content of superoxide anion and hydrogen peroxide, color, hardness, the ratio of solid and acid, total phenols, flavonoids and the content of carotenoids during fruit storage at low temperature were analyzed in the present study. Moreover, the method of principal component analysis (PCA) was also used to comprehensively evaluate the changes in storage quality. The results showed that MT treatment reduced the respiratory intensity and the rate of ethylene release. Meanwhile, the decline of quality indicators containing color, hardness and the ratio of solid and acid were delayed in MT treated fruit. Furthermore, MT can also remove reactive oxygen species and promote the accumulation of total phenols and flavonoids in the goji fruit. In addition, the decomposition of carotenoids was slowed down in the fruit treated by MT. These results suggested that exogenous MT treatment could significantly (P<0.05) inhibit the senescence and maintain the storage quality of goji berry during storage at low temperature. Among which, MT at 50 μmol/L had the best preservation effect on the fresh goji berry.

Key words： melatonin; goji berry; physiology; quality; principal component analysis

Cite this article

DENG Shufang , WANG Peng , ZHANG Huaiyu , LEI Haolin , CUI Meili , MA Wenping , WANG Junjie . Effects of melatonin treatment on postharvest physiology and storage quality of goji berry[J]. Food and Fermentation Industries, 2022 , 48(2) : 198 -204 . DOI: 10.13995/j.cnki.11-1802/ts.027111

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