Has antibacterial activity against strains of L.monocytogenes, L.lactis, B.subtilis, S.typhi, S.aureus, C.perfringens, E.aerogenes and M.luteus but not against E.coli, S.sonnei, S.pneumoniae, S.faecalis, P.aeruginosa, K.pneumoniae or P.vulgaris. Activity is stable between pH 2 and 9 but decreases at a more basic pH. Thermostable. Activity remains unaffected even after incubation at 100 degrees Celsius for 30 minutes.