Abstract: Bioactive peptides of freshwater fish are some small peptides material with unique physical and chemical properties and biological activity,which were obtained from the enzymatic hydrolysis of freshwater fish protein.At present,multiplicate bioactive peptides have been extracted from freshwater fish protein,however,few studies on the relationship between the activity and structure of bioactive peptides from freshwater are reported.The research on bioactive peptides was summarized including the kinds of bioactive peptides,its preparation,purification and application prospect so as to offer relative references for further research and application of freshwater fish bioactive peptides.

Key words: freshwater fish bioactive peptide, preparation, purification, application