FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (5): 339-343.

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Effects of Chilling Injury to Honey Dew Fruits on Membrane Lipid Peroxidation and Osmotic Constituents Adjustment

 LIU  Fang, CHEN  Nian-Lai, LI  Zhong-Fang, LI  Xi-E   

  1. 1.Department of Chemistry and Life Sciences,Leshan Normal College,Leshan 614004,China; 2.College of Agriculture,Gansu Agricultural University,Lanzhou 730070,China
  • Online:2007-05-15 Published:2011-12-31

Abstract: Membrane lipid peroxidation,activity of SOD and POD,proline,soluble protein and soluble sugar chilling injuries of Honey Dew fruits at temperatures(2℃,4℃,7℃)and un-chilling injury temperature(9℃)respectively were studied.The results showed that with the decrease of temperature,the activity of SOD and POD decreases .But under chilling injury temperature POD activity appears the peak value in 7day and MDA increases sharply in 21day,and Pro content becomes higher at the beginning of stressing but lower later on.The ehiiling injury temperature has the same effect on soluble protein and soluble sugar:the lower the temperature,the higher the contents of them.

Key words: Cucumis melo L, protective enzyme, chilling injury, MDA, osmotic adjustment