کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5137610 | 1494532 | 2017 | 12 صفحه PDF | دانلود رایگان |
- A potent ACE inhibitory gelatin An-PEP hydrolysate was generated.
- The peptides within the hydrolysate were identified by UPLC-ESI-MS/MS.
- Tri- and tetra-peptides with Gly-Pro at the C-terminus were chemically synthesised.
- Met-Gly-Pro was the most potent ACE inhibitory peptide; IC50: 51.11 ± 1.14 µM.
- The gelatin hydrolysate reduced SBP, DBP, MAP and HR in SHRs.
A targeted enzymatic approach was employed for the generation of angiotensin converting enzyme (ACE) inhibitory/anti-hypertensive peptides. Porcine skin gelatin was hydrolysed with Aspergillus niger prolyl endoproteinase (An-PEP) to produce an hydrolysate with potent ACE inhibitory activity (mean IC50: 220.2 µg mLâ1) after 4-h hydrolysis. Peptide identification was achieved by UPLC-ESI-MS/MS. The ACE-inhibitory activity of a selection of the identified peptides was determined. The most potent peptide was Met-Gly-Pro with an ACE IC50 of 51.11 ± 1.14 µM. Furthermore, oral administration (50 mg/kg body weight) of the hydrolysate to spontaneously hypertensive rats resulted in decreases in systolic and diastolic blood pressure of â28.89 ± 5.11 and â22.86 ± 5.65 mm Hg, respectively. Mean arterial pressure and heart rate were also reduced (â25.99 ± 5.66 mm Hg and â53.63 ± 17.67 bpm, respectively). The beneficial in vivo effects may be related to the potent C-terminal containing proline ACE-inhibitory peptides in the hydrolysate.
Journal: Journal of Functional Foods - Volume 34, July 2017, Pages 77-88