Effects of herbal yogurt with fish collagen on bioactive peptides with angiotensin-I converting enzyme inhibitory activity

SHORI, Amal Bakr; YONG, Yeoh Shin; BABA, Ahmad Salihin

doi:10.1590/fst.24020

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Original Article • Food Sci. Technol (Campinas) 41 (4) • Oct-Dec 2021 • https://doi.org/10.1590/fst.24020 copy

Effects of herbal yogurt with fish collagen on bioactive peptides with angiotensin-I converting enzyme inhibitory activity

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Abstract

Illicium verum (IV; dried fruit), Psidium guajava (PG; dried leaves), and Curcuma longa (CL; dried rhizome) water extract and/or fish collagen were added into yogurt to determine their effects on acidification and the proteolysis of milk up to 21 days of storage at 4°C. The angiotensin-I converting enzyme (ACE) test was conducted to analyze the inhibitory activity of bioactive peptides produced during proteolytic activity on the ACE enzyme. The addition of fish collagen in PG- yogurt significantly decreased pH compared to control on day 7 of storage. The presence of IV, PG, and CL enhanced (p<0.05) OPA peptide amount during 7 & 14 days of storage. The highest ACE inhibitory activity was shown on day 7 for all herbal yogurt. Herbal yogurt either in the presence or absence of fish collagen may improve the manufacture and formulation of yogurt with anti-ACE activity.

Keywords:
yogurt; herbal water extract; proteolysis; fish collagen; ACE inhibitory activity

Sample	PH
Sample	Day 0	Day 7	Day 21
P-Y	4.5±0.01^a	4.2±0.06^c	4.26±0.04^c
IV-Y	4.5±0.04^a	4.2±0.02^c	4.28±0.07^c
PG-Y	4.5±0.01^a	4.4±0.04^b	4.3±0.01^c
CL-Y	4.5±0.01^a	4.2±0.04^c	4.3±0.04^c
P-Y + FC	4.5±0.24^a	4.4±0.71^b	4.3±0.05^c
IV-Y + FC	4.5±0.02^a	4.3±0.06^b	4.37±0.01^c
PG-Y + FC	4.5±0.02^a	4.2±0.03^ba	4.4±0.03^c
CL-Y + FC	4.5±0.01^a	4.4±0.05^b	4.5±0.04^cb

Sample	TTA (LAE %)
Sample	Day0	Day 7	Day 21
P-Y	0.89±0.01ª	0.82±0.0^b	0.84±0.00^b
IV-Y	0.7±0.00^b	0.77±0.12^b	0.8±0.01^b
PG-Y	0.79±0.00^b	0.8±0.04^b	0.88±0.01^b
CL-Y	0.74±0.03^b	0.81±0.03^b	0.85±0.03^b
P-Y + FC	0.88±0.01ª	0.84±0.08^b	1.1±0.00^c
IV-Y + FC	0.9±0.01ª	0.9±0.03^b	1±0.01^c
PG-Y + FC	0.88±0.03ª	0.92±0.01^b	0.95±0.02^cd
CL-Y + FC	0.91±0.03ª	0.98±0.04^bc	0.99±0.01^cd

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[1] *Corresponding author: shori_7506@hotmail.com