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园艺学报 ›› 2013, Vol. 40 ›› Issue (4): 651-.

• 果树 • 上一篇    下一篇

‘徐香’猕猴桃采收后逐步降温处理对果实冷害、品质和活性氧代谢的影响

 杨青珍, 饶景萍, 王玉萍   

  1. (1 西北农林科技大学园艺学院,陕西杨凌 712100;2 运城学院生命科学系,山西运城 044000)
  • 出版日期:2013-04-25 发布日期:2013-04-25

Effects of Different Cooling Modes on Chilling Injury,Quality and Active Oxygen Metabolism in Harvested‘Xuxiang’Kiwifruits

 YANG  Qing-Zhen, RAO  Jing-Ping, WANG  Yu-Ping   

  1. (1 College of Horticulture,Northwest A & F University,Yangling,Shaanxi 712100,China; 2 Department of Life Sciences,
    Yuncheng University,Yuncheng,Shanxi 044000,China)
  • Online:2013-04-25 Published:2013-04-25

摘要: 研究了直接降温和3 种逐步降温处理对‘徐香’猕猴桃果实冷害、品质和活性氧代谢的影
响。结果表明:逐步降温处理有效降低冷藏猕猴桃果实的冷害指数和冷害率,并保持较高的好果率和货
架期品质;显著减少膜脂过氧化产物丙二醛的积累和抑制细胞膜透性的增加,保持较高的超氧化物歧化
酶、过氧化氢酶及抗坏血酸过氧化物酶活性和较低的脂氧合酶活性,并降低超氧阴离子自由基生成速率
和过氧化氢含量。这表明,逐步降温减轻‘徐香’猕猴桃果实冷害的发生与活性氧清除酶活性的提高,
及活性氧积累的降低有关。3 种逐步降温中,10 ℃→5 ℃ 2 d →2 ℃ 2 d→0 ℃ ± 0.5 ℃逐步降温对冷
害的控制效果更为显著。

关键词: 猕猴桃, 采后, 冷害, 降温, 活性氧代谢

Abstract: Abstract:The effects of direct cooling and gradual cooling on chilling injury,fruit quality and active
oxygen metabolism in kiwifruit(Actinidia deliciosa‘Xuxiang’)during cold storage were investigated. The
results showed that the gradual cooling treatment significantly reduced chilling injury index and chilling
injury incidence,maintained higher accepted fruit percentage and shelf-life quality,and inhibited the
accumulation of malonaldehyde and the increase in membrane permeability. Moreover,the gradual cooling
treatment maintained higher activities of superoxide dismutase,catalase and ascorbate peroxidase,and
lower activity in lipoxygenase than direct cooling fruit during the storage,and kept lower levels of
superoxide anion production rate and H2O2 content. These results indicate that gradual cooling treatment
retard chilling injury in ‘Xuxiang’ fruit which may be related to enhancing the activities of active oxygen
scavenging enzymes and reducing the accumulation of active oxygen. The gradual cooling(10 ℃→5 ℃
for 2 days→2 ℃ for 2 days→0 ℃ ± 0.5 ℃)had a better effect.

Key words: kiwifruit, postharvest, chilling injury, cooling, active oxygen metabolismpostharvest, chilling injury, cooling, active oxygen metabolismpostharvest, chilling injury, cooling, active oxygen metabolism

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