Antimicrobial peroxidase compositions

A method of killing or inhibiting a microorganism, comprising contacting said microorganim with a composition comprising:

• (a) a peroxidase;
• (b) an enhancing agent of the formula:
• 9
• wherein A denotes a group —D, —CH═CH—D, —CH═CH—CH═CH—D, —CH═N—D, —N═N—D, or —N═CH—D;
• D is selected from the group consisting of —CO—E, —SO2—E, —N—XY, and —N+—XYZ;
• E is —H, —OH,—R, or —OR, and X and Y and Z may be identical or different and selected from —H and —R;
• R is C1-C16 alkyl, preferably saturated or unsaturated, branched or unbranched C1-C8 alkyl, optionally substituted with a carboxy, sulfo or amino group;
• and B and C may be the same or different and selected from CmH2m+1;
• 1≦m≦5;
• and
• (c) a hydrogen peroxide or a source of hydrogen peroxide.

A method of preserving a cosmetic product, comprising adding to the cosmetic product an effective amount of an enzymatic antimicrobial composition comprising:

• (a) a peroxidase produced by or derivable from the fungus Coprinus;
• (b) an enhancing agent;
• and
• (c) hydrogen peroxide or a source of hydrogen peroxide.

A method for cleaning or disinfecting contact lenses comprising contacting said contact lenses with an effective amount of an a enzymatic antimicrobial composition comprising:

• (a) a peroxidase produced by or derivable from the fungus Coprinus;
• (b) an enhancing agent;
• and
• (c) hydrogen peroxide or a source of hydrogen peroxide.

A method of inhibiting microbial growth on a hard surface, wherein the surface is contacted with an a enzymatic antimicrobial composition comprising:

• (a) a peroxidase produced by or derivable from the fungus Coprinus;
• (b) an enhancing agent;
• and
• (c) hydrogen peroxide or a source of hydrogen peroxide.