The decrease in fruit quality between harvest and consumption is an important area in agriculture. Edible coatings are harmless compounds used for covering the crops after harvest to reduce the metabolism intensity. γ-aminobutyric acid (GABA) is a good candidate because it is a natural substance produced by plants at stress conditions. Pomegranate (Punica granatum L.) is a perishable fruit because it has a high content of water and nutritional compounds and also relatively soft texture. In this study the effect of GABA on extending the pomegranate shelf life at 4 ± 1 °C was studied. The treatments included control (distilled water), GABA (5, 10 and 15 mM) and the storage periods (45 and 90 days) with four replications. The results showed that GABA treatments had some positive effects on improving peel (skin) and aril (edible part of seeds) firmness, antioxidant activity, phenolic compounds content, scent and taste, freshness of texture and aril color indicators and they reduced ion leakage, chilling injury signs and malondialdehyde formation. However, GABA did not have a positive effect on weight loss. Total acidity in control and treated samples was reduced until 45 days but increased at day 90. GABA had the ability to maintain the fruit pH stable. Total soluble solids and vitamin C content were not affected by storage and GABA, and the effects on anthocyanin content were varied among treatments. Totally, the results suggested that postharvest application of GABA has the potential to extend the storage life of pomegranate fruits by maintaining some fruit qualities.

中文翻译：

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通过GABA涂层延长石榴（Punica granatum L.）的货架期。

收获和消费之间水果品质的下降是农业的重要领域。食用涂料是无害的化合物，用于在收获后覆盖农作物以降低新陈代谢的强度。γ-氨基丁酸（GABA）是很好的候选物，因为它是植物在胁迫条件下产生的天然物质。石榴（石榴）L.）是一种易腐烂的水果，因为它含有大量的水和营养成分，并且质地也相对较软。在这项研究中，研究了GABA在4±1°C下延长石榴货架期的作用。处理包括对照（蒸馏水），GABA（5、10和15 mM）和储存期（45和90天），重复四次。结果表明，GABA处理对改善果皮（皮肤）和假种皮（种子的可食部分）的硬度，抗氧化活性，酚类化合物含量，香气和味道，质地和假种皮颜色指示剂的新鲜度具有一定的积极作用，并减少了离子泄漏，冷害迹象和丙二醛形成。但是，GABA对减肥没有积极作用。对照和处理样品中的总酸度降低到45天，但在90天时升高。GABA具有维持水果pH值稳定的能力。总可溶性固形物和维生素C含量不受贮藏量和GABA的影响，并且对花色苷含量的影响在各处理之间有所不同。总体而言，结果表明，采收后GABA的施用有可能通过保持某些水果品质来延长石榴果实的贮藏寿命。