Antibacterial peptide is an integral part of the insect biological defense system. It is an immune reaction product produced by the infiltration of microorganisms and other factors. It has the characteristics of low molecular weight, heat stability, strong alkalinity and broad-spectrum antibacterial. In recent years, nearly one hundred antimicrobial peptides have been found in Lepidoptera, Coleoptera, Hymenoptera, and Diptera.

The macroporous adsorbent resin provided by Suzhou Bojie Resin Technology Co., Ltd. can effectively separate and purify the antibacterial peptides of Musca domestica, with large adsorption capacity, high adsorption rate and fast adsorption rate. Ethanol is an ideal eluent with high desorption rate, easy regeneration, reusability and low cost. The operating conditions are mild and controllable. The resin is very durable, has a long service life, is economical and practical, and is cost-effective.