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园艺学报 ›› 2013, Vol. 40 ›› Issue (2): 355-362.

• 研究报告 • 上一篇    下一篇

外源草酸对冷藏绿竹笋的保鲜效果及其生理基础

沈 玫, 王 琪, 赵宇瑛, 郑小林   

  1. (浙江工商大学食品与生物工程学院,杭州 310035)
  • 出版日期:2013-02-25 发布日期:2013-02-25

Physiological Roles of Exogenous Oxalic Acid in Preservation of Bamboo
Shoots During Cold Storage

 SHEN   Mei, WANG   Qi, ZHAO  Yu-Ying, ZHENG  Xiao-Lin   

  1. (College of Food Science and Biotechnology,Zhejiang Gongshang University,Hangzhou 310035,China)
  • Online:2013-02-25 Published:2013-02-25

摘要: 绿竹笋(Dendrocalamopsis oldhami)采后分别置于水和5 mmol · L-1 草酸溶液中浸泡10 min,
晾干后在(4 ± 0.5)℃条件下贮藏。结果发现草酸处理抑制了竹笋切面的褐变,延缓了笋肉木质纤维化。
草酸处理降低了脂氧合酶(LOX)、多酚氧化酶(PPO)、过氧化物酶(POD)和苯丙氨酸解氨酶(PAL)
活性,提高了超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活性,并降低了过氧化氢(H2O2)含量。

关键词: 绿竹笋, 草酸, 褐变, 木质化, 冷藏

Abstract: Harvested bamboo shoots(Dendrocalamopsis oldhami)were dipped in water and 5
mmol · L-1 oxalic acid solution for 10 min respectively,and then stored at low temperature(4 ± 0.5)℃.
The results showed that oxalic acid treatment inhibited wound browning,and also delayed lignification in
bamboo shoots as compared to control. Physiological roles of oxalic acid including decreased activities of
lipoxygenase(LOX),polyphenoloxidase(PPO),phenylalanine ammonia-lyase(PAL)and peroxidase
(POD),increased activities of superoxide dismutase(SOD)and catalase(CAT),and decreased hydrogen
peroxide(H2O2)content were contributed to the alleviation of browning and lignification in bamboo shoots
during storage.

Key words: bamboo shoot, oxalic acid, browning, lignification, cold storage

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