Melatonin treatment maintains nutraceutical properties of pomegranate fruits during cold storage
Melatonin treatment maintains nutraceutical properties of pomegranate fruits during cold storage
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DOI：
10.1016/j.foodchem.2019.125385
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发表时间：
2020-01-15
期刊：
影响因子：
8.8
通讯作者：
Pirzad, Farhad
中科院分区：
文献类型：
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作者：
Aghdam, Morteza Soleimani;Luo, Zisheng;Pirzad, Farhad
在这项研究中，研究了100 μ M褪黑激素处理激活的机制，以在4 ℃下储存120天期间维持石榴果实的营养保健特性。结果表明，褪黑激素处理后石榴果实中G6PDH和6PGDH活性的提高可能与细胞内NADPH供应充足有关。此外，褪黑激素处理石榴果实中较高的AA和GSH积累可能归因于较高的APX和GR活性与较低的AAO活性相一致。此外，褪黑激素处理的石榴果实表现出显着较高的PAL活性，导致较高的酚类物质和花青素的积累，以及较高的DPPH清除能力。此外，较高的AOX基因表达的褪黑激素处理的石榴果实中可能有利于ROS清除分子的积累。因此，保持营养特性的石榴果实处理褪黑激素可能归因于足够的细胞内NADPH供应，促进G6PDH和6PGDH活动在冷藏期间。
In this study, the mechanism activated by melatonin treatment at 100 mu M for maintaining nutraceutical properties in pomegranate fruits during storage at 4 degrees C for 120 days was investigated. Our results showed that the higher G6PDH and 6PGDH activities in pomegranate fruits treated with melatonin may be responsible for sufficient supply of intracellular NADPH. Also, higher AA and GSH accumulation in pomegranate fruits treated with melatonin may ascribe to higher APX and GR activities coincided with lower AAO activity. In addition, pomegranate fruits treated with melatonin exhibited significantly higher PAL activity resulting in higher phenols and anthocyanins accumulation as well as higher DPPH scavenging capacity. Additionally, higher AOX gene expression in pomegranate fruits treated with melatonin may be beneficial for ROS scavenging molecules accumulation. Therefore, maintaining nutraceutical properties of pomegranate fruits treated with melatonin may ascribe to sufficient intracellular NADPH supply by promoting G6PDH and 6PGDH activities during cold storage.