[Inhibition by chitosan of productive infection of T-series bacteriophages in the Escherichia coli culture].

The possibility of the use of chitosan aminopolysaccharide (poly-D-glucosamine) and its two salts--acetate and hydrochloride--to prevent phase infection of the Escherichia coli culture, strain B1, was studied. It was shown that chitosan inhibited productive infection caused by the bacteriophages T2 and T7, the efficiency of inhibition of both bacteriophages depending directly on the final concentration of chitosan in a medium. Neither chitosan nor its salts significantly prevented the growth of the bacterial culture.