Biotechnology Bulletin ›› 2023, Vol. 39 ›› Issue (7): 91-104.doi: 10.13560/j.cnki.biotech.bull.1985.2022-1265

Previous Articles     Next Articles

Research Progress in the Extraction and Functional Activities of Bioactive Peptides from Fish Skin

YOU Zi-juan1(), CHEN Han-lin2, DENG Fu-cai2()   

  1. 1. College of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000
    2. College of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000
  • Received:2022-10-12 Online:2023-07-26 Published:2023-08-17
  • Contact: DENG Fu-cai E-mail:youzijuan@163.com;dfcrndfcrn@163.com

Abstract:

Deep processing of fish skin waste in aquatic products processing can turn waste into treasure in high-value-added way and reduce environmental pollution, and the bioactive peptides from fish skin possess antioxidant, antihypertensive and antibacterial effects, etc. The methods of extraction, separation and identification of bioactive peptides from fish skin waste and their functional activities were discussed in depth, which may provide theoretical basis for the development of food, health products, cosmetics, pharmaceuticals and chemical products. In this paper, the advantages and disadvantages of enzyme, chemical and fermentation methods for the extraction of bioactive peptides from fish skin are reviewed. Compared with chemical methods, enzyme method is widely used, by which the bioactive peptides have higher activity; the cost of fermentation method is low, and it is suitable for mass production. The separation, purification and identification methods of fish skin bioactive peptides, such as ultrafiltration, nanofiltration, gel filtration, ion exchange, high performance liquid chromatography and mass spectrometry are summarized. The combination of multiple separation and identification methods to obtain fish skin bioactive peptides with specific functional activities is the first choice, but to obtain high purity and high activity of the target products is still a difficult breakthrough. In addition, the functional activities of fish skin bioactive peptides, such as antioxidant properties, inhibitory activities of angiotensin converting enzyme(ACE), antibacterial properties, and other bioactivities are analyzed, and the structure-activity relationship between functional activities and molecular weight, sequence structure and location of the peptides is summarized. Finally, the deficiencies of functional activity research, the development of bioactive peptides, and the direction of further research are prospected, aiming to provide reference for the fish processing industry in making high-value functional products.

Key words: fish skin, bioactive peptide, extraction, isolation and identification, functional activity, antioxidant activity, ACE inhibitory activity, antibacterial activity