食品科学 ›› 2005, Vol. 26 ›› Issue (3): 232-234.

• 包装贮运 • 上一篇    下一篇

高压静电场对“早艳”桃活性氧代谢的影响

 叶青, 李里特, 丹阳, 张刚   

  1. 中国农业大学食品科学与营养工程学院
  • 出版日期:2005-03-15 发布日期:2011-09-19

The Effect of High-voltage Static Field on the Active Oxygen Metabolism System of Zaoyan Peach

 YE  Qing, LI  Li-Te, DAN  Yang, ZHANG  Gang   

  1. College of Food Science and Nutritional Engineering, China Agricultural University
  • Online:2005-03-15 Published:2011-09-19

摘要: 本文以“早艳”桃为试材,研究了100kV/m的高压静电场处理对果实内过氧化氢酶活性、超氧化物歧化酶活性、丙二醛含量和果皮相对电导率的影响。结果表明,高压静电场处理能够有效地提高过氧化氢酶和超氧化物歧化酶的活性,保证果实体内的活性氧保持在较低的水平;同时在贮藏前期能使果实内的丙二醛含量以及果皮相对电导率保持在较低水平,有效地保持果蔬细胞膜的完整性,但是在贮藏的后期丙二醛含量和果皮相对电导率却迅速升高,这可能是因为高压静电场未能解决过氧化氢酶和超氧化物歧化酶协同作用不协调的问题,致使贮藏后期细胞膜的完整性遭到破坏。

关键词: 高压静电场, 过氧化氢酶, 超氧化物歧化酶, 丙二醛, 果皮相对电导率

Abstract: In this paper, effects on activity of CAT and SOD, MDA contents and relative conductance of pericarp of "Zaoyan" peach using 100kV/m high-voltage electric static field(HVEF),were studied. The results showed that 100kV/m HVEF could effectively increase the activity of CAT and SOD, so as to keep the active oxygen in vivo on low level. HVEF could hold back the increase of MDA content and relative conductance in pericarp at the prophase of storage, but they increased quickly at the anaphase of storage. It was probably because that HVEF could not adjust the synegistic action of CAT and SOD successfully. As a result, the cell membrane was destroyed.

Key words: HVEF, CAT, SOD, MDA, relative conductance, peach