期刊
JOURNAL OF MEDICINAL FOOD
卷 8, 期 4, 页码 423-430出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/jmf.2005.8.423
关键词
angiotensin I-converting enzyme; antihypertensive effect; Aspergillus oryzae protease; high-normal blood pressure; mild hypertension
Casein hydrolysate, prepared with Aspergillus oryzae protease, contains angiotensin I-converting enzyme inhibitory peptides, such as Val-Pro-Pro and Ile-Pro-Pro. We conducted a randomized, double-blind, placebo-controlled study to evaluate the effect of casein hydrolysate on the blood pressure of 144 subjects with high-normal blood pressure (n = 104) and mild hypertension (n = 40). Subjects were randomly assigned to two groups for a 12-week intake period. In the test group, both systolic (SBP) and diastolic (DBP) blood pressure decreased significantly compared with the placebo group: SBP/DBP significantly decreased from 138.2 +/- 6.5/84.4 +/- 5.3 mm Hg at week 0 to 132.3 +/- 7.3 (P < .001)/81.2 +/- 4.8 mm Hg (P < .001) at week 12. In the stratified analysis, the test product showed an anti hypertensive effect in both the subject group with high-normal blood pressure and that with mild hypertension. No side effect was observed in any subjects in this study. These results demonstrate that the casein hydrolysate, prepared with A. oryzae protease, produced a significant reduction in blood pressure in a population of subjects with high-normal blood pressure or mild hypertension without an adverse event.
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