Melatonin Treatment Maintains the Quality of Fresh-Cut Gastrodia elata under Low-Temperature Conditions by Regulating Reactive Oxygen Species Metabolism and Phenylpropanoid Pathway.
Melatonin Treatment Maintains the Quality of Fresh-Cut Gastrodia elata under Low-Temperature Conditions by Regulating Reactive Oxygen Species Metabolism and Phenylpropanoid Pathway.
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DOI：
10.3390/ijms241814284
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发表时间：
2023-09-19
影响因子：
5.6
通讯作者：
中科院分区：
文献类型：
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作者：
褪黑激素（MT）的应用已被证明可以改善水果和蔬菜储存过程中的品质。本研究的主要目的是探讨MT对低温（4℃）贮藏期间鲜切天麻品质的影响。结果表明，MT处理不仅抑制了鲜切麻雀的呼吸频率和丙二醛含量，而且减缓了总酸度和总可溶性固形物的下降，有效抑制了微生物的生长，提高了鲜切麻麻的产品安全性。 MT处理减少了超氧阴离子和过氧化氢的产生，并抑制了过氧化物酶和多酚氧化酶的活性和表达。此外，它还导致抗氧化剂相关酶的活性和表达增加，包括超氧化物歧化酶、过氧化氢酶、抗坏血酸过氧化物酶、谷胱甘肽还原酶、单脱氢抗坏血酸还原酶和脱氢抗坏血酸还原酶，同时还导致抗坏血酸和谷胱甘肽水平升高。此外，MT处理导致鲜切G. elata的总酚和类黄酮含量增加，并增强苯丙素途径中涉及的关键酶（苯丙氨酸解氨酶、肉桂酸-4-羟化酶、4-香豆酸：CoA连接酶）的活性和表达。综上所述，MT通过激活ROS代谢和苯丙素途径增强抗氧化能力，从而保持鲜切龙舌兰的品质。
The application of melatonin (MT) has been shown to improve the quality during the storage of fruits and vegetables. The primary objective of this study is to investigate the effects of MT on the quality of fresh-cut Gastrodia elata during low-temperature (4 °C) storage. The results indicated that MT treatment not only suppressed the respiratory rate and malondialdehyde content but also slowed down the decline in total acidity and total soluble solids, effectively inhibiting microbial growth and enhancing the product safety of fresh-cut G. elata. The treatment with MT reduced the superoxide anions and hydrogen peroxide production, as well as inhibiting the activity and expression of peroxidase and polyphenol oxidase. Additionally, it led to increased activity and the expression of antioxidant-related enzymes, including superoxide dismutase, catalase, ascorbate peroxidase, glutathione reductase, monodehydroascorbate reductase, and dehydroascorbate reductase, while also resulting in elevated levels of ascorbic acid and glutathione. Furthermore, the treatment with MT induced an increase in the total phenolic and flavonoid content of fresh-cut G. elata and enhanced the activity and expression of key enzymes involved in the phenylpropanoid pathway (phenylalanine ammonia-lyase, cinnamate-4-hydroxylase, 4-coumarate: CoA ligase). In summary, MT enhances the antioxidant capacity by activating both the ROS metabolism and phenylpropanoid pathway, thus maintaining the quality of fresh-cut G. elata.
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DOI：
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发表时间：
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期刊：
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影响因子：
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