Exogenous melatonin delays postharvest fruit senescence and maintains the quality of sweet cherries
文献类型： 外文期刊
作者： Wang, Feng 1 ; Zhang, Xiaoping 4 ; Yang, Qingzhen 1 ; Zhao, Qifeng 4 ;
作者机构： 1.Yuncheng Univ, Dept Life Sci, Yuncheng 044000, Shanxi, Peoples R China
2.Jeonju Univ, Atopy & Hlth Res Inst, Jeonju 55069, South Korea
3.Yuncheng Univ, Dept Sci Technol & Ind, Yuncheng 044000, Shanxi, Peoples R China
4.Shanxi Acad Agr Sci, Res Inst Pomol, Taigu 030815, Shanxi, Peoples R China
关键词： Sweet cherry; Melatonin; Senescence; Antioxidant enzyme; Antioxidant compounds
期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）
ISSN： 0308-8146
年卷期： 2019 年 301 卷
页码：
收录情况： SCI
摘要： We assessed the effects of postharvest exogenous melatonin (50,100 and 150 mu mol L-1) on the senescence and quality of sweet cherries during storage at 0 +/- 0.5 degrees C. Melatonin treatment decreased decay incidence, respiration rate, and weight loss. It delayed the degradation of firmness, lightness, saturation, hue angle, titratable acidity, and total soluble solids content, thus maintaining better fruit quality. Melatonin treatment inhibited increases in O-2(center dot)-, H2O2 malondialdehyde content, and relative membrane permeability, while maintaining higher endogenous melatonin levels and increasing superoxide dismutase and catalase activity. Additionally, melatonin treatment enhanced the activity of antioxidant enzymes, increased the levels of ascorbic acid, and reduced glutathione levels, which are related to the ascorbate-glutathione cycle, as well as increasing the AsA:DHA and GSH:GSSG ratios. Delayed senescence in sweet cherries after exogenous melatonin treatment may be associated with high endogenous melatonin levels and increased antioxidant activity and content.
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