Antimicrobial peracid compositions with selected catalase enzymes and methods of use in aseptic packaging

Patent metadata

Field	Value
Publication number	US-9358314-B2
Application number	US-201314056255-A
Country	US
Kind code	B2
Filing date	Oct 17, 2013
Priority date	Apr 18, 2008
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

The present invention relates to specially selected catalase enzymes and their use in reducing hydrogen peroxide in applications, and particularly in aseptic packaging applications.

First claim

What is claimed is:

1. A method for disinfecting a surface, the method comprising
(a) applying an antimicrobial composition to the surface, wherein the antimicrobial composition comprises
(i) from about 20 ppm to about 250 ppm of a catalase enzyme selected from the group consisting of bovine derived catalase, fungal derived catalase, and mixtures thereof;
(ii) hydrogen peroxide;
(iii) a C 1 -C 10 carboxylic acid; and
(iv) a C 1 -C 10 percarboxylic acid;

(b) allowing the antimicrobial composition to drain from the surface;
(c) rinsing the surface with a rinse solution;
(d) allowing the rinse solution to drain from the surface;
(e) collecting the drained antimicrobial composition, the drained rinse solution, or both independently;
(f) optionally processing the collected rinse solution to form a processed rinse solution; and
(g) reusing the collected antimicrobial composition, the processed rinse solution, or both.

2. The method of claim 1 , wherein the rinse solution of step (c) comprises water.

3. The method of claim 1 , wherein the rinse solution of step (c) comprises a nonionic surfactant.

4. A method of claim 1 , wherein the rinse solution of step (c) comprises a portion of the antimicrobial composition.

5. The method of claim 1 , wherein the reused rinse solution of step (g) comprises from about 1500 to about 15000 ppm of the antimicrobial composition.

6. The method of claim 1 , wherein the rinse solution of step (c) comprises an antimicrobial agent.

7. The method of claim 1 , wherein the rinse solution of step (c) comprises a surfactant.

8. The method of claim 1 , wherein the rinse solution of step (c) comprises a catalase selected from a group consisting of bovine derived catalase, fungal derived catalase, and mixtures thereof.

9. The method of claim 1 , wherein the concentration of hydrogen peroxide in the processed rinse solution is less than 45 ppm.

10. The method of claim 1 , wherein the concentration of hydrogen peroxide in the processed rinse solution is below 35 ppm.

11. The method of claim 1 , wherein processing the collected rinse solution comprises filtering debris or chemicals from the collected rinse solution.

12. The method of claim 1 , wherein the processed rinse solution is used to clean and sanitize the environment around aseptic packaging equipment.

13. The method of claim 1 , wherein the catalase maintains 50% of its activity over a period of one hour at a pH from about 2.0 to about 2.5.

14. The method of claim 1 , wherein the catalase enzyme is able to degrade at least 500 ppm of the hydrogen peroxide in less than 15 minutes.

15. The method of claim 14 , wherein the catalase enzyme is a fungal derived catalase.

16. The method of claim 14 , wherein the antimicrobial composition of step (a) comprises stabilizing agents to stabilize the percarboxylic acid and hydrogen peroxide to prevent premature oxidation within the composition.

17. The method of claim 14 , wherein the antimicrobial composition comprises
from about 0.00001% to about 0.5 wt. % hydrogen peroxide;
from about 0.1% to about 20.0 wt. % of a C1-C10 carboxylic acid; and
from about 0.1% to about 2.0 wt. % of a C1-C10 percarboxylic acid.

Assignees

• Ecolab Usa Inc

Inventors

• Herdt Brandon L
• Magnuson Joshua P
• Mcsherry David D
• Li Junzhong
• Owens Krista L

Classifications

• A23B2/788

  Inorganic compounds · CPC title

• A23B2/783

  Microorganisms; Enzymes · CPC title

• A23B2/754 Primary

  containing carboxyl groups · CPC title

• A23L3/3571

  Human Necessities · mapped topic

• A61L2/18 Primary

  Liquid substances · CPC title