Effect of melatonin treatment on visual quality and health-promoting properties of broccoli florets under room temperature
Effect of melatonin treatment on visual quality and health-promoting properties of broccoli florets under room temperature
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室温下褪黑素处理对西兰花小花视觉质量和保健特性的影响
DOI：
10.1016/j.foodchem.2020.126498
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发表时间：
2020-07-30
期刊：
影响因子：
8.8
通讯作者：
Wang, Qiaomei
中科院分区：
文献类型：
--
作者：
Miao, Huiying;Zeng, Wei;Wang, Qiaomei
研究了褪黑激素处理对青花菜花在室温下的视觉品质和促健康物质含量的影响。用1 μ M褪黑激素处理花椰菜小花，然后在室温下储存。结果表明，褪黑激素处理能延缓青花菜采后衰老，维持较高水平的类胡萝卜素、维生素C和总酚等抗氧化物质，且抗氧化能力高于对照。此外，1 μ M褪黑激素处理维持较高的硫代葡萄糖苷含量，也导致最有效的抗癌谱，萝卜硫苷的百分比增加。进一步的分析表明，1 μ M褪黑激素强烈诱导硫代葡萄糖苷生物合成相关基因BoMYB28，BoMYB34，BoCYP79F1和BoCYP79B2，以及BoTGG1，参与硫代葡萄糖苷水解的基因的表达。总之，采后处理与1 μ M褪黑激素是潜在的保持视觉质量和健康促进性能的西兰花小花。
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 mu M 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 mu M 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 mu M 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 mu M melatonin is potential in maintaining visual quality and health-promoting properties of broccoli florets.