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Title

Angiotensin I-converting enzyme inhibitory peptides FQPSF and LKYPI identified in Bacillus subtilis A26 hydrolysate of thornback ray muscle Authors

AuthorsLassoued, Imen; Mora, Leticia CSIC ORCID; Barkia, Ahmed; Aristoy, María Concepción CSIC ORCID; Nasri, Moncef; Toldrá Vilardell, Fidel CSIC ORCID
KeywordsAngiotensin I-converting enzyme inhibitory activity
Bacillus subtilis A26 hydrolysate
Mass spectrometry
Proteomics
Thornback ray
Issue Date21-May-2016
PublisherJohn Wiley & Sons
CitationInternational Journal of Food Science & Technology 51 (7): 1604-1609 (2016)
AbstractAngiotensin I-converting enzyme (ACE) inhibitory peptides have been searched in thornback ray (Raja clavata) muscle hydrolysed with Bacillus subtilis A26 proteases until a hydrolysis degree of 18.35%. The hydrolysate showed an IC50 of 0.83 mg mL−1. To identify peptides responsible for this activity, the extract was eluted through size-exclusion chromatography and fractions collected. The highest ACE inhibitory activity was found for fractions F2 and F3 which had IC50 of 0.42 and 0.51 mg mL−1, respectively. These fractions were analysed by nano-liquid chromatography coupled to tandem mass spectrometry (nLC-MS/MS). A total of 131 and 108 peptide sequences mainly derived from actin, myosin heavy chain and procollagen alpha 1 chain proteins were identified in fractions F2 and F3, respectively. FQPSF and LKYPI showed the best results with an IC50 of 12.56 and 27.07 μM, respectively. These results prove the potential of thornback ray muscle hydrolysate as a source of ACE inhibitory peptides.
Publisher version (URL)http://dx.doi.org/10.1111/ijfs.13130
URIhttp://hdl.handle.net/10261/137905
DOI10.1111/ijfs.13130
ISSN0950-542
Appears in Collections:(IATA) Artículos

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