METHOD FOR FORMING CHITOSAN FILM COATING AND CHITOSAN FILM COATING

摘要

FIELD: medicine.;SUBSTANCE: chitosan is dissolved in an organic acid: 4-6% citric acid or 2-8% lactic acid in the relation of the ingredients chitosan: the organic acid 1:2-1:4 to prepare a forming solution. Chitosan has molecular weight 80-500 kDa. The forming solution is added with vitamin B1 in the amount of max. 0.5 wt %. The prepared forming solution is applied on a substrate in the amount of 0.2-0.25 ml/cm² and kept to achieve a film structure. Said method is used to form the chitosan film coating having the thickness of 50-250 mcm and the breaking elongation of 42 to 470%.;EFFECT: group of inventions allows preparing high-elastic chitosan citrate or lactate films possessing bactericidal action.;2 cl, 1 tbl, 13 ex