| abstract |
Provided are a method and a composition for maintaining the bactericidal activity of a histidine silver complex even in a liquid containing chlorine ions. By adding a water-soluble nitrogen-containing polymer typified by polyethyleneimine, an effect of preventing the reaction between a histidine silver complex and a chloride ion can be obtained, and a histidine silver complex in a chloride ion-containing solution is obtained. The bactericidal activity is maintained. Moreover, a liquid antibacterial agent composition is obtained by mixing (a) silver oxide, (b) L-histidine, (c) a water-soluble nitrogen-containing polymer, and (d) a solvent. [Selection figure] None |