食品科学 ›› 2011, Vol. 32 ›› Issue (10): 271-273.doi: 10.7506/spkx1002-6630-201110062

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低温贮藏甜瓜的离子外渗研究

刘芳陈年来,张玉鑫   

  1. 1.乐山师范学院化学与生命科学院 2.甘肃农业大学农学院
  • 出版日期:2011-05-25 发布日期:2011-04-08
  • 基金资助:
    澳大利亚国际农业研究中心项目(PHT/1998/152)

Ions Leakage of Honey Dew, Muskmelon during Cold Storage

LIU Fang1,2,CHEN Nian-lai2,*, ZHANG Yu-xin2   

  1. 1. College of Chemistry and Life Science, Leshan Normal University, Leshan 614004, China; 2. College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
  • Online:2011-05-25 Published:2011-04-08

摘要: 研究不同贮藏温度下甜瓜果实的细胞膜透性变化及K+、Na+和Ca2+的外渗率。结果表明,甜瓜果实在2℃和5℃贮藏条件发生冷害,其细胞膜透性增加,且温度越低增加越大,表明对膜的伤害越严重。K+的外渗率随温度的降低而增大;Na+外渗率随贮藏时间的延长而增加,21d后贮藏温度越低Na+外渗率越大;Ca2+的外渗率极低,且温度和贮藏时间对其影响不大。

关键词: 甜瓜, 冷害, 离子外渗, k+, Na+, Ca2+

Abstract: Membrane permeability, leakage of K+, Na+ and Ca2+ of Honey Dew, muskmelon stored at different temperatures were investigated. Results indicated that low temperature storage promoted membrane permeability. The leakage of K+ increased with the decrease of temperature, and the leakage of Na+ increased with the increase of storage time and the decrease of temperature after 21d. The leakage amount of Ca2+ was at a low level, and not affected by storage temperature or time.

Key words: chilling injury, ions leakage, K+, Na+, Ca2+

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