Production of novel angiotensin I-converting enzyme inhibitory peptides by fermentation of marine shrimp Acetes chinensis with Lactobacillus fermentum SM 605.
Acetes chinensis is an underutilized shrimp species thriving in Bo Hai Gulf of China. Its hydrolysate digested with protease SM98011 has been previously shown to have high angiotensin I-converting enzyme (ACE) inhibitory activity (He et al., J Pept Sci 12:726-733, 2006). In this article, A. chinensis were fermented by Lactobacillus fermentum SM 605 and the fermented sauce presented high ACE inhibitory activity. The minimum IC(50) value (3.37 +/- 0.04 mg/mL) was achieved by response surface methodology with optimized process parameters such as fermentation time of 24.19 h, incubation temperature at 38.10 degrees C, and pH 6.12. Three ACE inhibitory peptides are purified by ultrafiltration, gel filtration, and reverse-phase high performance liquid chromatography. Identified by mass spectrometry, their amino acid sequences are Asp-Pro, Gly-Thr-Gly, and Ser-Thr, with IC(50) values of 2.15 +/- 0.02, 5.54 +/- 0.09, and 4.03 +/- 0.10 microM, respectively. Also, they are all novel ACE inhibitory peptides. Compared with protease digestion, fermentation is a simpler and cheaper method to produce ACE inhibitory peptides from shrimp A. chinensis.
Wang
Yu-Kai
YK
State Key Lab of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Jinan, China.
He
Hai-Lun
HL
Chen
Xiu-Lan
XL
Sun
Cai-Yun
CY
Zhang
Yu-Zhong
YZ
Zhou
Bai-Cheng
BC
D000806:Angiotensin-Converting Enzyme Inhibitors / Q000737:chemistry / Q000302:isolation & purification* / Q000378:metabolism / Q000494:pharmacology; D000818:Animals; D033364:Decapoda / Q000737:chemistry / Q000378:metabolism*; D005285:Fermentation; D052197:Limosilactobacillus fermentum / Q000378:metabolism*; D010455:Peptides / Q000737:chemistry / Q000302:isolation & purification* / Q000378:metabolism / Q000494:pharmacology; D007703:Peptidyl-Dipeptidase A / Q000378:metabolism
D000806:Angiotensin-Converting Enzyme Inhibitors; D010455:Peptides; D007703:Peptidyl-Dipeptidase A