Angiotensin I-converting enzyme inhibitory activity and antioxidant capacity of bioactive peptides derived from enzymatic hydrolysis of buffalo milk proteins

Mahmoud Abdel-Hamid; Jeanette Otte; Cristian De Gobba; Ali Osman; Essam Hamad

doi:10.1016/j.idairyj.2016.11.006

Angiotensin I-converting enzyme inhibitory activity and antioxidant capacity of bioactive peptides derived from enzymatic hydrolysis of buffalo milk proteins

Mahmoud Abdel-Hamid, Jeanette Otte, Cristian De Gobba, Ali Osman, Essam Hamad

61 Citations (Scopus)

Abstract

Buffaloes' milk, which is consumed in many parts of the world, is a little-explored source of bioactive peptides. The angiotensin converting enzyme (ACE)-inhibitory activity and the antioxidant capacity of peptides from buffaloes' milk were examined. A retentate from buffaloes' skimmed milk was hydrolysed using papain, pepsin or trypsin. The papain hydrolysate showed the highest ACE-inhibitory activity and radical scavenging capacity and was fractionated by size exclusion chromatography (SEC) and characterized by LC-MS analysis. A SEC-fraction with intermediate peptide size showed very high ACE-inhibitory activity, while two fractions with small peptides exhibited the strongest antioxidant activity. Peptide identification by ultra-performance liquid-chromatography-tandem mass spectrometry showed that these active fractions contained known bioactive sequences, in addition to novel peptides with supposed ACE-inhibitory (FPGPIPK, IPPK, IVPN, and QPPQ) and antioxidant (YPSG, HPFA and KFQ) activities. The results obtained showed the potential of buffaloes' milk proteins to release ACE-inhibitory and antioxidant peptides

Original language	English
Journal	International Dairy Journal
Volume	66
Pages (from-to)	91-98
Number of pages	8
ISSN	0958-6946
DOIs	https://doi.org/10.1016/j.idairyj.2016.11.006
Publication status	Published - 1 Mar 2017

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10.1016/j.idairyj.2016.11.006

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Angiotensin I-converting enzyme inhibitory activity and antioxidant capacity of bioactive peptides derived from enzymatic hydrolysis of buffalo milk proteins. / Abdel-Hamid, Mahmoud; Otte, Jeanette ; De Gobba, Cristian et al.
In: International Dairy Journal, Vol. 66, 01.03.2017, p. 91-98.

Research output: Contribution to journal › Journal article › Research › peer-review

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abstract = "Buffaloes' milk, which is consumed in many parts of the world, is a little-explored source of bioactive peptides. The angiotensin converting enzyme (ACE)-inhibitory activity and the antioxidant capacity of peptides from buffaloes' milk were examined. A retentate from buffaloes' skimmed milk was hydrolysed using papain, pepsin or trypsin. The papain hydrolysate showed the highest ACE-inhibitory activity and radical scavenging capacity and was fractionated by size exclusion chromatography (SEC) and characterized by LC-MS analysis. A SEC-fraction with intermediate peptide size showed very high ACE-inhibitory activity, while two fractions with small peptides exhibited the strongest antioxidant activity. Peptide identification by ultra-performance liquid-chromatography-tandem mass spectrometry showed that these active fractions contained known bioactive sequences, in addition to novel peptides with supposed ACE-inhibitory (FPGPIPK, IPPK, IVPN, and QPPQ) and antioxidant (YPSG, HPFA and KFQ) activities. The results obtained showed the potential of buffaloes' milk proteins to release ACE-inhibitory and antioxidant peptides",

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AU - Abdel-Hamid, Mahmoud

AU - Otte, Jeanette

AU - De Gobba, Cristian

AU - Osman, Ali

AU - Hamad, Essam

PY - 2017/3/1

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N2 - Buffaloes' milk, which is consumed in many parts of the world, is a little-explored source of bioactive peptides. The angiotensin converting enzyme (ACE)-inhibitory activity and the antioxidant capacity of peptides from buffaloes' milk were examined. A retentate from buffaloes' skimmed milk was hydrolysed using papain, pepsin or trypsin. The papain hydrolysate showed the highest ACE-inhibitory activity and radical scavenging capacity and was fractionated by size exclusion chromatography (SEC) and characterized by LC-MS analysis. A SEC-fraction with intermediate peptide size showed very high ACE-inhibitory activity, while two fractions with small peptides exhibited the strongest antioxidant activity. Peptide identification by ultra-performance liquid-chromatography-tandem mass spectrometry showed that these active fractions contained known bioactive sequences, in addition to novel peptides with supposed ACE-inhibitory (FPGPIPK, IPPK, IVPN, and QPPQ) and antioxidant (YPSG, HPFA and KFQ) activities. The results obtained showed the potential of buffaloes' milk proteins to release ACE-inhibitory and antioxidant peptides

AB - Buffaloes' milk, which is consumed in many parts of the world, is a little-explored source of bioactive peptides. The angiotensin converting enzyme (ACE)-inhibitory activity and the antioxidant capacity of peptides from buffaloes' milk were examined. A retentate from buffaloes' skimmed milk was hydrolysed using papain, pepsin or trypsin. The papain hydrolysate showed the highest ACE-inhibitory activity and radical scavenging capacity and was fractionated by size exclusion chromatography (SEC) and characterized by LC-MS analysis. A SEC-fraction with intermediate peptide size showed very high ACE-inhibitory activity, while two fractions with small peptides exhibited the strongest antioxidant activity. Peptide identification by ultra-performance liquid-chromatography-tandem mass spectrometry showed that these active fractions contained known bioactive sequences, in addition to novel peptides with supposed ACE-inhibitory (FPGPIPK, IPPK, IVPN, and QPPQ) and antioxidant (YPSG, HPFA and KFQ) activities. The results obtained showed the potential of buffaloes' milk proteins to release ACE-inhibitory and antioxidant peptides

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