Antibacterial Activity of Crab-Chitosan against Staphylococcus aureus and Escherichia coli

Abstract

The effect of crab-chitosan on the susceptibility of Staphylococcus aureus and Escherichia coli was studied. Chitosan which is known to own multiple functional properties has created significant interest among the researchers due to their biological activities and impending applications in the food, pharmaceutical and agricultural industries. The antimicrobial activities of chitosan against Staphylococcus aureus and Escherichia coli were explored by calculation of the Minimum Inhibitory Concentration (MIC) in media supplemented with 600, 800, 1000, 1200, 1300 and 1400 ppm chitosan adjusted to pH 6 or 7. The Minimum Inhibitory Concentration (MIC) of the prepared chitosan was 1200 and 1300 ppm for Staphylococcus aureus and Escherichia coli respectively.