Melatonin Treatment to Pomegranate Trees Enhances Fruit Bioactive Compounds and Quality Traits at Harvest and during Postharvest Storage.
Melatonin Treatment to Pomegranate Trees Enhances Fruit Bioactive Compounds and Quality Traits at Harvest and during Postharvest Storage.
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褪黑素处理提高了石榴树采收期和采后贮藏期间的果实生物活性物质和品质性状。
DOI：
10.3390/antiox10060820
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发表时间：
2021-05-21
期刊：
影响因子：
--
通讯作者：
Serrano M
中科院分区：
文献类型：
--
作者：
Lorente-Mento JM;Guillén F;Castillo S;Martínez-Romero D;Valverde JM;Valero D;Serrano M
连续两年，2019年和2020年，测定了褪黑激素石榴树处理对果实品质和采收时以及在10℃下贮藏60天期间具有抗氧化活性的生物活性化合物的影响。第一年，在果实发育过程中分别喷施0.1、0.3和0.5 mM的褪黑素，结果表明，果实采收时，褪黑素处理的果实中生物活性化合物(总酚、总花色苷和单株花色苷)及抗氧化活性均高于对照。其他果实品质参数，如硬度、总可溶性固形物和假种皮红色，也因褪黑激素处理而提高。对照树的果实在贮藏过程中硬度和酸度水平下降，而可溶性固形物含量增加，导致果实品质下降。与对照相比，褪黑素处理树的果实中的这些变化被推迟，甚至观察到总酸度的保持，导致水果货架期的延长。此外，在整个贮藏过程中，处理组果实中的酚类物质、花色苷含量和抗氧化活性均保持在高于对照的水平。总的来说，在0.1 mM的褪黑素剂量下，上述所有效应都处于最高水平，然后选择它在第二年重复实验，第一年的结果得到证实。因此，0.1 mM褪黑素处理可以提高石榴果实中具有抗氧化活性和保健作用的生物活性化合物的假种皮含量，并改善石榴果实在采收和采后贮藏期间的品质性状。
The effect of melatonin pomegranate tree treatments on fruit quality and bioactive compounds with antioxidant activity at harvest and during storage at 10 °C for 60 days was assayed in two consecutive years, 2019 and 2020. In the first year, trees were treated with 0.1, 0.3 and 0.5 mM of melatonin along the developmental fruit growth cycle, and results showed that bioactive compounds (total phenolics and total and individual anthocyanins) and antioxidant activity at harvest were higher in fruits from melatonin-treated trees than in controls. Other fruit quality parameters, such as firmness, total soluble solids and aril red colour, were also increased as a consequence of melatonin treatment. In fruit from control tress, firmness and acidity levels decreased during storage, while increases occurred on total soluble solids, leading to fruit quality reductions. These changes were delayed, and even maintenance of total acidity was observed, in fruit from melatonin-treated trees with respect to controls, resulting in a fruit shelf-life increase. Moreover, concentration of phenolics and anthocyanins and antioxidant activity were maintained at higher levels in treated than in control fruits during the whole storage period. In general, all the mentioned effects were found at the highest level with the 0.1 mM melatonin dose, and then it was selected for repeating the experiment in the second year and results of the first year were confirmed. Thus, 0.1 mM melatonin treatment could be a useful tool to enhance aril content on bioactive compounds with antioxidant activity and health beneficial effects and to improve quality traits of pomegranate fruit, at harvest and during postharvest storage.
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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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影响因子：
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