Effect of <i>in Vitro</i> Digestion on Antioxidant Activity of Salmon Skin Collagen Oligopeptides

LIU Wen-ying; ZHANG Ming-hao; GAO Li-hui; FENG Xiao-wen; LI Guo-ming; GU Rui-zeng

doi:10.13386/j.issn1002-0306.2020030001

Volume 42 Issue 1

Dec. 2020

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Science and Technology of Food Industry > 2021 > 42(1): 317-321. > DOI: 10.13386/j.issn1002-0306.2020030001

LIU Wen-ying, ZHANG Ming-hao, GAO Li-hui, FENG Xiao-wen, LI Guo-ming, GU Rui-zeng. Effect of in Vitro Digestion on Antioxidant Activity of Salmon Skin Collagen Oligopeptides[J]. Science and Technology of Food Industry, 2021, 42(1): 317-321. DOI: 10.13386/j.issn1002-0306.2020030001

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Effect of in Vitro Digestion on Antioxidant Activity of Salmon Skin Collagen Oligopeptides

1. Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo 315832, China;
2. Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co., Ltd., Beijing 100015, China;
3. College of Biological Sciences and Bio-technology, Beijing Forestry University, Beijing 100083, China;
4. College of Food Science and Engineering, Beijing University of Agriculture, Beijing 102206, China

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Received Date: March 01, 2020
Available Online: January 07, 2021

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Abstract

Abstract

In this research,salmon skin collagen oligopeptides(SSCP)were prepared by enzymatic hydrolysis using salmon skin and subjected to in vitro digestion experiments. Through molecular weight distribution analysis,DPPH free radical scavenging activity,hydroxyl radical scavenging activity,total antioxidant capacity(ABTS method)and reactive oxygen species(ROS)experiment,the antioxidant properties of SSCP were explored before and after in vitro digestion. The results showed that the weight average molecular weight of SSCP decreased slightly after the simulated digestion experiment,with a change of no more than 4%;before and after pepsin digestion,the IC₅₀ values of DPPH free radical scavenging activity were 11.1 and 12.3 mg/mL,respectively,and before and after trypsin digestion,the IC₅₀ values were 12.5 and 14.6 mg/mL,respectively;before and after pepsin digestion,IC₅₀ values of hydroxyl radical scavenging activity were 12.2 and 13.2 mg/mL,respectively,and before and after trypsin digestion,IC₅₀ values were 10.7 and 11.5 mg/mL,respectively;after pepsin digestion,the total antioxidant capacity decreased by no more than 13%,and after trypsin digestion,the total antioxidant capacity decreased by no more than 19%;after pepsin digestion,the ROS scavenging activity increased by no more than 3%,and after trypsin digestion,the ROS scavenging activity increased by no more than 5%. This indicated that SSCP had good digestive stability and antioxidant activity,which provided a theoretical basis for their development in antioxidant functional food.
- salmon skin collagen oligopeptides,
- in vitro digestion,
- molecular weight,
- antioxidant activity

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