食品科学 ›› 2007, Vol. 28 ›› Issue (11): 551-554.

• 营养卫生 • 上一篇    下一篇

乳清蛋白肽对高血压大鼠血压及血管紧张素转化酶(ACE)活性的影响

 包怡红, 徐思源   

  1. 东北林业大学林学院; 东北林业大学林学院 黑龙江哈尔滨150040; 黑龙江哈尔滨150040;
  • 出版日期:2007-11-15 发布日期:2011-11-22

Effects of Whey Peptides on Blood Pressure and Angiotensin I Converting Enzyme in Spontaneously Hypertensive Rats

 BAO  Yi-Hong, XU  Si-Yuan   

  1. College of Forestry, Northeast Forestry University, Harbin 150040, China
  • Online:2007-11-15 Published:2011-11-22

摘要: 采用碱性蛋白酶、胰蛋白酶水解乳清蛋白制备ACE抑制肽,研究乳清蛋白肽对原发性高血压鼠(SHR)的血压及血管紧张素转化酶(angiotensin I converting enzyme,ACE)活性的影响。结果表明,随着乳清多肽摄入量的增加(40、80、160mg/kg),各组大鼠血压得到下降(172±8、165±7、162±9mmHg),并均在灌胃后2~3h达到最低,血压下降幅度达到最大(为-36±9mmHg);同时ACE活性显著降低(85.62±5.23、75.52±7.35、61.46±8.74U/μl,p<0.05)。实验证明乳清水解肽有显著的降血压效果。

关键词: 乳清蛋白, ACE抑制肽, SHR, ACE活性

Abstract: ACE inhibitory peptides were prepared from whey protein by composite enzyme (alcalase and trypsin), and effects of peptides on blood pressure of the spontaneously hypertensive rats and angiotensin I converting enzyme(ACE) active were studied in this paper. Results showed that the peptides concentrations were 40, 80 and 160 mg/kg in vivo could depress blood pressure to 172±8, 165±7, 162±9 mmHg and the lowest number is -36±9 mmHg after administration 2 hours. At the same time ACE activity decreased with 85.62±5.23, 75.52±7.35, 61.46±8.74 U/μl(p<0.05). These results testified that the peptides had apparent effects on depressing blood pressure.

Key words: whey protein, ACE inhibitory peptide, SHR, ACE activity