Delayed pericarp hardening of cold stored mangosteen (Garcinia mangostana L.) upon pre-treatment with the stress hormones methyl jasmonate and salicylic acid
Delayed pericarp hardening of cold stored mangosteen (Garcinia mangostana L.) upon pre-treatment with the stress hormones methyl jasmonate and salicylic acid
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DOI：
10.1016/j.scienta.2017.11.017
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发表时间：
2018-01
影响因子：
4.3
通讯作者：
M. Mustafa;Asgar Ali;G. Seymour;G. Tucker
中科院分区：
文献类型：
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作者：
M. Mustafa;Asgar Ali;G. Seymour;G. Tucker
水果通常需要冷藏，这可能会导致水果生理机能发生负面变化。这在山竹等热带水果中更为明显，由于酚类物质含量转化为木质素合成增加，这些水果在冷害和衰老过程中会经历果皮硬化。本研究的目的是探索可以改善冷藏对可溶性酚类含量和水果品质影响的处理方法。将新鲜收获的果实暴露于五种水平之一的水杨酸 (SA) 或茉莉酸甲酯 (MJ)，并在 6°C 下储存 12 天。评估了理化质量属性、总可溶性酚含量、多酚氧化酶（PPO）活性和抗氧化活性。 MJ 显着增强（P <0.05）抗氧化活性和 PPO 活性，同时延缓果皮硬化。水果品质与生物活性密切相关，并且可以通过应激激素处理来双重增强。
Fruits are commonly subjected to cold storage, which can elicit negative changes in the fruit’s physiology. This is more apparent in tropical fruits such as mangosteen, which experience pericarp hardening during chilling injury and senescence, due to diversion of phenolics content into increased lignin synthesis. The aim of this study was to explore treatments that may ameliorate the effects of cold storage on soluble phenolics content and fruit quality. Freshly harvested fruit were exposed to salicylic acid (SA) or methyl jasmonate (MJ) at one of five levels, and stored at 6 °C for 12 d. Physico-chemical quality attributes, total soluble phenolics content, polyphenol oxidase (PPO) activity and antioxidant activity were assessed. MJ significantly enhanced (P <0.05) antioxidant activity and PPO activity, while delaying pericarp hardening. Fruit quality is closely linked to bioactivity, and can be dually enhanced by treatment with stress hormones.