期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 144, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.lwt.2021.111265
关键词
Umami peptide; ACE inhibitory Activity; HUVEC; HepG2
资金
- National Natural Science Foundation of China [31771945]
- Science and Technology Department of Zhejiang Province [2020C02035, 2018C02051]
- Key Research and Development Program of Ningxia [2019BDE02002]
- Modern Agricultural Technical System Foundation [CARS-42-25]
- Ningbo Natural Science Foundation [2018A610338]
- Ningbo Science Technology Department of China [2019C10065]
- Zhejiang Provincial Department of Science and Technology [LGF18C200001]
Umami peptides derived from Ruditapes philippinarum have demonstrated ACE and DPP-IV inhibitory activities, as well as the ability to lower blood pressure and blood sugar levels. These peptides function by promoting nitric oxide secretion and reducing endothelin-1 production to exert hypoglycemic and hypotensive effects.
The functional activity of umami peptides after digestion is poorly known. We studied the dipeptidyl peptidase-4 (DPP- IV) and angiotensin I-converting enzyme (ACE) inhibition activity of 14 umami peptides from Ruditapes philippinarum in vivo and in vitro. GRVSNCAA (IC50 = 57.93 mu mol/L) and TYLPVH (IC50 = 1.37 mu mol/L) exhibited noncompetitive ACE inhibitory activity in vitro, and GPAGPAGPR showed DPP-IV inhibitory activity (IC50 = 160.5 mu mol/L). The peptides also decreased systolic blood pressure and reduced the blood sugar level in the oral glucose tolerance test and the single blood pressure test. To understand the hypoglycemic and hypotensive mechanism of peptides, we conducted cell experiments with HepG2 and human umbilical vein endothelial cells. GRVSNCAA and TYLPVH significantly (p < 0.01) promoted nitric oxide secretion and reduced endothelin-1 production. GPAGPAGPR exerted hypoglycemic activity by increasing the content of hexokinase and pyruvate kinase.These results suggest that some umami peptides have the potential to provide human health benefits.
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