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血管紧张素转化酶(angiotensin I converting enzyme,简称ACE)对于人体血压的调节有着十分重要的作用。血管紧张素转化酶抑制肽(ACEIP)是从食源性蛋白质中提取的功能性肽,有着抑制ACE的作用,从而降低人体血压,达到治疗高血压的目的。本文主要从ACE抑制肽的降压原理、来源、结构、分类及作用特点和前景展望这几方面对其进行总结阐述。 相似文献
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降血压肽的生理活性及应用 总被引:23,自引:2,他引:23
来源于食物蛋白的降血压肽对血管紧张素转化酶(ACE)的活性具有抑制作用。本介绍降血压肽的作用机制,生理效果,研究进展并展望其应用前景 。 相似文献
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酶法生产大豆蛋白ACE抑制肽的研究 总被引:4,自引:0,他引:4
研究了Alcalase碱性蛋白酶、Neutrase中性蛋白酶、Protames复合蛋白酶、Flavourzyme风味蛋白酶对大豆分离蛋白的水解效果和ACE(血管紧张素转化酶)的抑制活性。水解能力用pH-start法检测,水解度大小依次为:Alcalase碱性蛋白酶>Protames复合蛋白酶>Neutrase中性蛋白酶>Flavourzyme风味蛋白酶;ACE抑制活性用高效液相法检测,ACE抑制率强弱依次为:Alcalase碱性蛋白酶>Flavourzyme风味蛋白酶>Protames复合蛋白酶>Neutrase中性蛋白酶。综合考虑,选定Alcalase碱性蛋白酶为生产大豆ACE抑制肽的最适酶,并对其酶解条件进行了优化,确定生产大豆ACE抑制肽的最佳条件为:温度60℃、pH8.0、[S]=4%、[E]/[S]=4%,这时的水解度为14.4%。 相似文献
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食品蛋白质降血压肽的研究进展 总被引:30,自引:1,他引:30
在阐述血管紧张纛转化酶抑制剂降压机理的基础上,综述了食品蛋白质降血肽的研究进展,对结构与活性之间的关系及其在降低高血压患者血压中的重要性进行了讨论,并展望了其广阔的发展前景。 相似文献
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Angiotensin I-converting enzyme (ACE) inhibitory activities in untreated koumiss and koumiss digested with ACE, pepsin, trypsinase, and chymotrypsin were compared and analyzed. Four novel ACE inhibitory peptides (PI, PK, PM, and PP) were purified using ultrafiltration and high performance liquid chromatography (HPLC). The classification study showed that these 4 peptides were of the true inhibitor type. The amino acid sequences of these peptides are YQDPRLGPTGELDPATQPIVAVHNPVIV, PKDLREN, LLLAHLL, and NHRNRMMDHVH, respectively. Their individual IC50 (50% inhibitory concentration) values were as follows: 14.53 ± 0.21 μM, 9.82 ± 0.37 μM, 5.19 ± 0.18 μM, and 13.42 ± 0.17 μM. From sequence analysis, we determined that PI was part of β-casein in mare's milk. The 3 peptides PK, PM, and PP did not correspond with any known milk protein. The results suggest that koumiss is rich in ACE inhibitory peptides, and the ACE inhibitors in koumiss are of the pro-drug type or a mixture of the pro-drug type and the true inhibitor type. These results may provide evidence about the beneficial effects of koumiss, especially on cardiovascular health. 相似文献
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乳源ACE抑制剂(降血压肽)的研究现状 总被引:14,自引:2,他引:14
利用酶或微生物水解牛乳蛋白质可获得ACE抑制剂 (降血压肽 ) ,近来从乳酸菌发酵的酸奶中也找到了ACE抑制肽 ;经动物实验证明 ,口服一定量的ACE抑制肽或含有ACE抑制肽的酸奶可降低血压 ,而且对血压正常者没有影响。文章中综述了来源于乳蛋白质和发酵乳制品的ACE降血压肽的最新研究进展 ,对乳源ACE抑制剂的应用前景进行了展望 相似文献
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Antihypertensive effect of peptides obtained from Enterococcus faecalis-fermented milk in rats 总被引:1,自引:0,他引:1
Previous studies have demonstrated that milk fermented with Enterococcus faecalis decreases the systolic blood pressure (SBP) and the diastolic blood pressure (DBP) of spontaneously hypertensive rats. In this study, we evaluated the antihypertensive activity of the following peptide sequences: LHLPLP, LHLPLPL, LVYPFPGPIPNSLPQNIPP, VLGPVRGPFP, and VRGPFPIIV. These peptides isolated from E. faecalis-fermented milk showed in vitro angiotensin I-converting enzyme-inhibitory activity. Because the most potent angiotensin I-converting enzyme-inhibitory sequences were LHLPLP and LVYPFPGPIPNSLPQ-NIPP, we administered different doses of these peptides to spontaneously hypertensive rats. High doses of the remaining sequences were also administered to these animals. Water served as a negative control and captopril as a positive control. All products were administered orally. The SBP and DBP were measured before administration and also at 2, 4, 6, 8, and 24 h after administration. Before administration of the different products, spontaneously hypertensive rats showed SBP and DBP values of 218 ± 2.5 and 157 ± 5.9 mmHg, respectively (n = 30). The sequences LHLPLP, LVYPF-PGPIPNSLPQNIPP, VLGPVRGPFP, and VRGPFPIIV caused clear and significant decreases in SBP, DBP, or both in the animals. In particular, the antihypertensive effect could be clearly established when 2 or 3 mg/kg of LHLPLP was administered. These 2 doses of LHLPLP showed similar antihypertensive properties. Four hours after administration of captopril or the highest doses of the different peptides, the decreases in the SBP and the DBP (mmHg) were as follows: captopril (SBP = 52 ± 5.8, DBP = 38.8 ± 3.8), 3 mg/kg of LHLPLP (SBP = 25.3 ± 8.2, DBP = 29.5 ± 7.6), 6 mg/kg of LVYPFPGPIP-NSLPQNIPP (SBP = 14.9 ± 3.7, DBP = 8.7 ± 4.4), 10 mg/kg of LHLPLPL (SBP = 7.7 ± 4.1, DBP = 9.4 ± 3.1), 10 mg/kg of VLGPVRGPFP (SBP = 16.2 ± 5.8, DBP = 21.64 ± 3.2), and 10 mg/kg of VRGPFPIIV (SBP = 16.05 ± 2.74, DBP = 9.19 ± 3.49). The results obtained suggest that the sequences LHLPLP, LVYPFPGPIPNSLPQ-NIPP, VLGPVRGPFP, and VRGPFPIIV could be responsible, at least in part, for the antihypertensive properties described for E. faecalis-fermented milk. 相似文献
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从醋蛋水解物中分离纯化ACE抑制活性物质 总被引:4,自引:0,他引:4
经胃蛋白酶-胰酶复合酶体系水解醋蛋液得到的水解物对血管紧张素转化酶有较强的抑制活性(IC_(50)= 0.125 mg/mL),醋蛋水解物经Bio-gel P-2纯化、半制备型RP-HPLC分离,得到对ACE有强烈抑制作用的组分X,X经电喷雾质谱、保温后,确定其是序列为Trp-Ala-Ala-Gly-Trp的多肽类物质。 相似文献