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柠檬酸处理对芒果采后生理活动的影响

施瑞城, 张熙新, 蔡汉海

华南热带农业大学工学院.海南,儋州 571737；海南亚洲开发银行贷款办公室.海南,海口 570000；中国热带农业科学院.广东,湛江 524000

摘要

有机酸的代谢对植物组织的成熟衰老关系密切,芒果采后用适当浓度的柠檬酸液处理,可明显减缓其采后的生理活动,呼吸高峰推迟出现,与芒果成熟密切相关的过氧化物酶、淀粉酶、多酚氧化酶等酶活性推迟上升,酶活高峰值也有所下降。但酸液浓度达0.5%后过氧化物酶、淀粉酶的酶活高峰开始前移;而多酚氧化酶始终维持较低的酶活水平,几乎无酶活高峰出现。

关键词： 柠檬酸处理; 芒果; 采后生理

Effects of citric acid treatment on the physiology of post-harvest mango fruits

Shi Ruicheng, Zhang Xixin, Cai Hanhai

Technology Institute of South China Tropical Agricultural University.Danzhou 571737,Hainan；China

Abstract

The metabolism of organic acid was closely related to ripening and senescence in the plant tissue. After being treated with an appropriate concentration of citric acid, the physiological activity of the harvested mango fruits was significantly slowed down, and the peak of respiration was delayed, and the peaks of the activities of peroxidase (POX), amylase and polyphenol oxidase (PPO) were delayed, and the peak of the enzyme activities were decreased. But it is no so good results when the mango fruits were treated with a high concentration of citric acid, in comparison with a control. But the peaks of the activities of POX and amylase advanced with high citric acid concentration (≥0.5%). Meanwhile, the activity of PPO was always slow during the storaye.

Key words: Citric acid treatment;Mango;Post-harvest physiology

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引用本文：

施瑞城, 张熙新, 蔡汉海. 柠檬酸处理对芒果采后生理活动的影响[J]. 生理学报 2000; 52 (2): .

Shi Ruicheng, Zhang Xixin, Cai Hanhai. Effects of citric acid treatment on the physiology of post-harvest mango fruits. Acta Physiol Sin 2000; 52 (2): (in Chinese with English abstract).