| abstract |
(57) [Abstract] [Problem] An antibacterial and preservative excellent in effect and usability and safe, And to develop an effective application utilizing the suitability of the antibacterial and preservative. An antibacterial and preservative containing one or more chitosan derivatives obtained by reacting a salt formed by reacting a thiamine derivative with a specific surfactant, and a chitosan and a saccharide having a reducing terminal. And skin applications containing the same and bath agents, foods and drinks, fiber treatment agents, and the like. |