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. 2020 Jul 30:319:126498.
doi: 10.1016/j.foodchem.2020.126498. Epub 2020 Feb 26.

Effect of melatonin treatment on visual quality and health-promoting properties of broccoli florets under room temperature

Huiying Miao  1 , Wei Zeng  2 , Meng Zhao  3 , Jiansheng Wang  4 , Qiaomei Wang  5
Affiliations

Effect of melatonin treatment on visual quality and health-promoting properties of broccoli florets under room temperature

Huiying Miao et al. Food Chem. .

Abstract

Effect of melatonin treatment on visual quality and contents of health-promoting compounds of broccoli florets under room temperature was investigated in the present study. Broccoli florets were treated with 1 μM melatonin and then stored at room temperature. Results showed that melatonin treatment could delay the post-harvest senescence of broccoli, and performed well in maintaining higher levels of antioxidants, such as carotenoids, vitamin C and total phenols, as well as higher antioxidant capacity than the control. Besides, 1 μM melatonin treatment sustained higher content of glucosinolates, and also resulted in increased percentage of the most potent anticarcinogenic profile, glucoraphanin. Further analysis revealed that 1 μM melatonin strongly induced the expression of glucosinolate biosynthesis-related genes BoMYB28, BoMYB34, BoCYP79F1, and BoCYP79B2, as well as BoTGG1, a gene involved in glucosinolate hydrolysis. In conclusion, post-harvest treatment with 1 μM melatonin is potential in maintaining visual quality and health-promoting properties of broccoli florets.

Keywords: Antioxidants; Broccoli florets; Glucosinolates; Melatonin; Post-harvest.

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Conflict of interest statement

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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