摘要:
茉莉酸甲酯作为与抗损伤相关的植物激素和信号分子,外源应用可激发植物防御基因的表达,诱导其产生与机械伤害相似的防御效果。采后果蔬在贮藏和运输期间总酚、抗坏血酸以及谷胱甘肽等抗氧化物质含量下降,致使其抗氧化活性降低,且品质和抗性受到了不良影响,大大缩短了果蔬的货架期,造成了一定的经济损失。研究发现茉莉酸甲酯可通过提高果蔬抗性物质合成酶和抗氧化相关酶的活性增强果蔬抗性,有效维持果蔬的抗氧化活性、降低品质损失、延长货架期。本文对近些年国内外茉莉酸甲酯在果蔬应用上的研究进展进行了综述,聚焦于其对果蔬抗性、抗氧化活性及品质等方面的影响及作用机理,为今后茉莉酸甲酯在果蔬保鲜上的研究及应用提供参考。
关键词:
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茉莉酸甲酯
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抗性
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抗氧化活性
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品质
Abstract:
Methyl jasmonate as a phytohormone and signal molecule related to anti-injury can stimulate the expression of plant defense gene and induce the protective effect similar to mechanical injury. During the storage and transportation,the contents of antioxidant substance such as total phenol,ascorbic acid and glutathione decreased,as a result,its antioxidant activity is reduced,and quality and resistance are adversely affected,ultimately shortening the shelf life of fruits and vegetables,resulting in a certain economic losses. It is found that methyl jasmonate enhances the resistance of fruits and vegetables,effectively maintains the antioxidant activity of fruits and vegetables,reduces the loss of quality,and prolongs the shelf life by increasing the activity of synthetic enzymes and antioxidant-related enzymes in fruits and vegetables. This paper reviews the research progress of methyl jasmonate in fruits and vegetables application in recent years,focus on the effects of methyl jasmonate on the resistance,antioxidant activity and quality of fruits and vegetables and its mechanism. It provides reference for the research and application of methyl jasmonate in fruits and vegetables preservation in the future.
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