Antimicrobial mortar surfaces for the improvement of hygienic conditions

作者：De Muynck W; De Belie N^*; Verstraete W

来源：Journal of Applied Microbiology, 2010, 108(1): 62-72.

DOI：10.1111/j.1365-2672.2009.04395.x

• biocides
• concrete
• fibres
• pathogens
• silver copper zeolites
• survival
• triclosan

Aims:
To evaluate the effectiveness of various antimicrobial mortar formulations in inhibiting the growth of a selection of pathogens of environmental and hygienic concern.
Methods and Results:
Mortar prisms containing triclosan-incorporated fibres or different concentrations of silver copper zeolites were incubated with Escherichia coli, Listeria monocytogenes, Salmonella enterica or Staphylococcus aureus at 4 or 20 degrees C for 24 h. From plate counting, a substantial bactericidal effect (> 4 log units) could only be observed for the mortar specimens containing more than 3% zeolites on cement weight base, the effect being more pronounced at 20 degrees C compared to 4 degrees C. No inhibitory effect could be observed for mortar specimens containing antimicrobial fibres. Adenosinetriphosphate (ATP) measurements allowed for a rapid indication of the occurrence of antimicrobial activity.
Conclusions:
In order to obtain a bactericidal effect on mortar surfaces, concentrations of silver copper zeolites of more then 3% are required.
Significance and Impact of the Study:
To our knowledge, this is the first study in which the effectiveness of various antimicrobial mortar mixtures towards the inhibition of pathogens has been evaluated in a quantitative way. Antimicrobial concrete mixtures can be used for the improvement of the hygienic conditions in a variety of environments.

• 出版日期2010-1