COMPOSITION OF NATURAL EXTRACTS HAVING ANTIBACTERIAL OR BACTERIOSTATIC ACTIVITY ALSO FOR GRAM-NEGATIVE BACTERIA

摘要

The present invention relates to a mixture M of natural origin comprising an usnic acid and/or a salt thereof, preferably an usnic acid sodium salt, in the racemic or dextrorotatory D(+) form. Furthermore, the present invention relates to an inclusion compound (ci) comprising or, alternatively consisting of: (i) a D-usnic acid as an enantiomer, or a salt thereof, or mixtures thereof, of natural origin, and (ii) beta-cyclodextrins. The present invention also relates to the use of said mixture M and/or said inclusion compound (ci) as antibacterial, antibacterial proliferative, bacteriostatic, microbicidal, anti-mould, anti-yeast, antifungal or antimycotic agent, preferably against Gram-positive and/or Gram-negative bacteria. Furthermore, the present invention relates to a method for rendering a surface antibacterial, antibacterial proliferative, bacteriostatic, microbicidal, anti-mould, anti-yeast, antifungal or antimycotic, preferably against Gram-positive and/or Gram-negative bacteria, said method provides for the application - by means of spray, roller or brush technique - of said mixture M and/or said inclusion compound (ci) on said surface.