Evaluation of antibacterial properties and biofilm formation of metal materials

阐明了21种块体金属和23种金属离子的抗菌特性，为抗菌金属材料的制备提供了基础数据。此外，还观察了在金属表面上形成的生物膜形成行为。其结果是，银、铜、钴等块体金属的抗菌性高，而锡、钽、铂等不显示抗菌性。在金属离子的抗菌试验中也显示出类似的趋势。结果表明，生物膜的形成仅限于抗菌性能高的金属表面。

The antibacterial characteristic1s of 21 kinds of bulk metals and 23 kinds of metal ions were clarified to obtain the basic data for the creation of antibacterial metallic materials. Moreover, the biofilm formation behavior formed on the metal surfaces was observed. As a result, antibacterial properties of the bulk metals such as silver, copper and cobalt, etc. are high, and it has been understood that tin, tantalum, and platinum doesn't show antibacterial properties. The similar tendency was shown in the antibacterial examination with the metal ions. It was shown that the formation of the biofilm was restricted on the metal surfaces where antibacterial property was high.