Antihypertensive effect of surimi prepared from olive flounder (Paralichthys olivaceus) by angiotensin-I converting enzyme (ACE) inhibitory activity and characterization of ACE inhibitory peptides

被引:25
作者
Oh, Jae-Young [1 ]
Kim, Eun-A [2 ]
Lee, Hyogeun [1 ]
Kim, Hyun-Soo [1 ]
Lee, Jung-Suck [3 ]
Jeon, You-Jin [1 ]
机构
[1] Jeju Natl Univ, Dept Marine Life Sci, Jeju 63243, South Korea
[2] Korea Inst Ocean Sci & Technol, Jeju Int Marine Sci Ctr Res & Educ, Jeju 63349, South Korea
[3] Gyeongsang Natl Univ, Res Ctr Ind Dev Seafood, Tongyeong 53064, South Korea
关键词
Antihypertensive; Olive flounder; Surimi; Angiotensin-I-converting enzyme; Peptide; FRAME PROTEIN; NITRIC-OXIDE; GEL PROPERTIES; HYDROLYSATE; PURIFICATION; MUSCLE; GROWTH;
D O I
10.1016/j.procbio.2019.01.016
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
In this study, we investigated the physicochemical characteristics of flounder surimi (FS) and surimi gel (FSG). We analyzed the proximate composition, heavy metal content, and amino acid composition of FS and the gel strength and whiteness of FSG. In spontaneously hypertensive rats, the oral administration of FS significantly decreased systolic blood pressure. We further evaluated the antihypertensive activity of an FS digest (FSD) using an in vitro gastric model. FSD had significant ACE inhibitory activity and increased nitric oxide (NO) levels in human umbilical vein endothelial cells. We purified and identified three peptides from FSD by gel filtration chromatography and quadrupole time of flight electrospray ionization mass spectrometry. We predicted the tertiary structure of ACE for docking simulation. The bioactive peptides from FS showed successful binding to ACE (PDB ID: 1086) with negative binding energy and negative CDOCKER interaction energy in an in silica docking analysis. These results showed that FSD functions as an antihypertensive agent and FS could be a beneficial ingredient in the nutraceutical, pharmaceutical, and functional food industries.
引用
收藏
页码:164 / 170
页数:7
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