Comparative study on the bioavailability of peptide extracts from Jeju black pigs and three-way crossbred pigs

Jae Won Jeong1, Ermie Jr. Mariano1, Da Young Lee1, Seung Yun Lee2, Jae Hyeon Kim1, Seung Hyeon Yun1, Juhyun Lee1, Jinmo Park1, Yeongwoo Choi1, Dahee Han1, Jin Soo Kim1, Sun Jin Hur1,*
Author Information & Copyright
1Department of Animal Science and Technology, Chung-Ang University, , Anseong 17546, Korea.
2Division of Animal Science, Division of Applied Life Science (BK21 Four), Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Korea.
*Corresponding Author: Sun Jin Hur, Department of Animal Science and Technology, Chung-Ang University, , Anseong 17546, Korea, Republic of. E-mail:

© Copyright 2023 Korean Society of Animal Science and Technology. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


This study aimed to compare the changes in the bioactivities of peptide extracts (<10 kDa) obtained from Jeju black pigs (JBP) and three-way crossbred pigs (Landrace × Yorkshire × Duroc, LYD) before and after digestion. The results showed that the loin peptide extracts of JBP maintained high ABTS radical scavenging activity after in vitro digestion. However, the iron chelating activity and antihypertensive activity of all peptide extracts were decreased. This study suggested that the peptide extracts produced through alkaline-AK digestion have sufficiently high antioxidant and antihypertensive activities; however, these activities were reduced after in vitro digestion. Meanwhile, the JBP loin and ham peptide extracts promoted high SOD activity than that of LYD when administered to mice. Furthermore, the ham peptide extracts of JBP showed a relatively high antihypertensive activity in mice. Therefore, it is deemed that these peptide extracts from JBP are more bioactive than that of LYD, and can be used as bioactive materials.

Keywords: Jeju black pigs; Peptide extracts; Antioxidant activity; Antihypertensive activity