Process for removing dry surface biofilm
AssigneeWhiteley Corporation Pty. Ltd.
InventorsTrevor Owen Glasbey, Gregory Stuart Whiteley
Life of this patent
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Abstract
The present invention relates to a process for removing dry surface biofilm from a surface. The process comprises: (i) dissolving a powder-based composition into water wherein the powder-based composition comprises: a) a hydrogen peroxide source, b) an acetyl donor, c) an acidifying agent, and d) a wetting agent; (ii) allowing the solution to generate a biocidally effective concentration of peracetic acid; (iii) contacting the dry surface biofilm contaminated surface with the solution of peracetic acid for a period of time; and (iv) removing the solution.
Claims18
A process for removing dry surface biofilm from a contaminated environmental surface or a contaminated non-critical medical device, said dry surface biofilm comprising embedded bacteria and protein and being formed by dehydration of biofilm, which process comprises:
- dissolving a single-part powder-based composition into water to produce a solution, wherein the powder-based composition consists essentially of:
- a) a hydrogen peroxide source,
- b) an acetyl donor,
- c) an acidifying agent, and
- d) a surfactant;
- (ii) allowing the solution to generate peracetic acid in a concentration of at least 0.13%;
- (iii) contacting the contaminated environmental surface or the contaminated non-critical medical device with the solution containing said generated peracetic acid for a period of time sufficient to kill said embedded bacteria and remove a portion of said protein present in said dry surface biofilm;
- and
- (iv) removing the solution and said dry surface biofilm from the contaminated environmental surface or the contaminated non-critical medical device.
A process for removing dry surface biofilm from a contaminated environmental surface or a contaminated non-critical medical device, said dry surface biofilm comprising embedded bacteria and protein and being formed by dehydration of said bacteria, which process comprises:
- dissolving a single-part powder-based composition into water to produce a solution, wherein the powder-based composition consists of:
- a) a hydrogen peroxide source,
- b) an acetyl donor,
- c) an acidifying agent,
- d) a surfactant, and
- e) optionally one or more ingredients selected from the group consisting of a sequestering agent, a buffering agent, a flow modifier, a colourant and a perfume;
- (ii) allowing the solution to generate peracetic acid in a concentration of at least 0.13%;
- (iii) contacting the contaminated environmental surface or the contaminated non-critical medical device with the solution containing said generated peracetic acid for a period of time sufficient to kill said embedded bacteria and remove a portion of said protein present in said dry surface biofilm;
- and
- (iv) removing the solution and said dry surface biofilm from the contaminated environmental surface or the contaminated non-critical medical device.
Dependencies are inferred from the claim text.