PROCÉDÉ DE TRAITEMENT DE SURFACE DE CUIVRE OU D'ALLIAGE DE CUIVRE, LIQUIDE DE TRAITEMENT DE SURFACE POUR STÉRILISER DU CUIVRE OU UN ALLIAGE DE CUIVRE, ET PROCÉDÉ DE STÉRILISATION UTILISANT DU CUIVRE OU UN ALLIAGE DE CUIVRE TRAITÉ À L'AIDE DUDIT PROCÉDÉ

摘要

The present invention provides a surface treatment method that improves antimicrobial activity of copper or a copper alloy and enhances immediate effects of antimicrobial actions on the surface of the copper or the copper alloy. A surface treatment method for copper or a copper alloy according to the present invention comprises preparing a reducing agent solution containing a biological reducing substance, and treating the surface of the copper or the copper alloy with the reducing agent solution. The present invention also provides a surface treatment liquid for sterilizing copper or a copper alloy, in which the surface treatment liquid contains a biological reducing substance. The present invention also provides a sterilization method that comprises bringing copper or a copper alloy treated by the surface treatment method into contact with a surface of an object to sterilize the surface of the object.