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Stable aqueous antimicrobial enzyme compositions

  • US 7,964,548 B2
  • Filed: 04/05/2010
  • Issued: 06/21/2011
  • Est. Priority Date: 01/20/2009
  • Status: Active Grant
First Claim
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1. A concentrated antimicrobial enzymatic cleaning composition comprising:

  • a) a tertiary amine antimicrobial agent;

    b) a lipase enzyme;

    c) 0.5 to 6.0 wt. % of hydrochloric acid;

    d) a surfactant; and

    e) a solvent;

    wherein the total concentration of the surfactant and solvent is from about 3.0 to about 50 wt. %, the ratio of the antimicrobial to the total concentration of the surfactant and solvent is about (0.02-0.4);

    1, the composition has a pH range from about 4.9 to about 9.5, the composition has 15% of its original enzyme activity after 21 days at a temperature of 40°

    C., and the composition is free of boric acid or a boric acid salt.

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