食品科学 ›› 2001, Vol. 22 ›› Issue (4): 72-74.

• 包装贮运 • 上一篇    下一篇

热处理对桃果实的酶活性变化及膜脂肪酸的影响

 王阳光, 茅林春, 陆胜明   

  1. 浙江大学食品与营养系; 浙江万里学院生物技术研究所
  • 出版日期:2001-04-15 发布日期:2012-02-16

Study on Heat Treatment Effects Upon Enzyme Activities and Unsaturated Fatty Acid Contents of Peaches

 WANG  Yang-Guang, MAO  Lin-Chun, LU  Sheng-Ming   

  • Online:2001-04-15 Published:2012-02-16

摘要: 经贮前加温( 35± 1℃, 24h)、中途加温( 20± 1℃, 24h)处理的果实的 SOD活性较高、 LOX活性较低, MDA含量积累较少,表明了热处理可以维持活性氧代谢平衡,避免过多有害物质积累。另外贮前加温还能明显提高果实亚油酸含量;中途加温的果实在冷藏第 14d后,亚麻酸含量极显著提高;而且在冷藏期间,两种处理的不饱和膜脂脂肪酸高于对照组。

关键词: 桃果实, 贮藏, 贮前加温, 中途加温, 冷害

Abstract: Pre- heating and intermittent warming of Pronus persica could lead to the higher SOD activity,lower LOX activity and lower accumulation of MDA.The results indicated that heat treatment could maintain the metabolism balance of active oxygen,and avoid accumulation of harmful substances.Pre- heating (35± 1℃ ,24h) significantly increased the contents of linoleic acid.After 14 days of harmful storage,the contents of linolenic acid in intermittently warmed peaches (20± 1℃ ,24h) increased significantly.The contents of unsaturated fatty acids in the pre- heated peaches and the intermittent warmed peaches were higher than those in the control at 0± 1℃ .

Key words: Peach storage Pre- heating Intermittent warming Chilling injury