3.3. Characterization of the antimicrobial activity
Treatment of CFS with trypsin resulted in loss of activity, confirming its proteinaceous nature. Resistance to treatment with lysozyme suggests that the bacteriocin is not glycosylated. Same result was obtained when the CFS was treated with lipase, confirming that no lipid was involved in the inhibitory activity. Catalase test did not affect the antibacterial activity of strain under investigation; this result suggests that the inhibitory activity could not be due to hydrogen peroxide.