Recently, the research on antibacterial peptides from insects becomes a key concern in the field of insect immunobiology and molecular biology. It will be used as a new source of antibiont and a new anticancer drug. In this paper, antibacterial substances of the Oxya chinensis larvae were induced by ultraviolet irradiation, ultrasonic, stabbing, injecting bacterial suspension. It was observed that E.coli produced obvious antibacterial activities. By means of detecting antibacterial activities on different instruction bacteria, antibacterial peptides of the Oxya chinensis only acted on Gram-positive bacteria. The Antibacterial substances were heat-stable alkaline peptides, which were determined by heating and acid treatment on the antibacterial crude extracts.
Journal of Shanxi Agricultural University