Compositions for facilitating biological stain removal
A substrate or coating is provided that includes a protease with enzymatic activity toward a component of a biological stain. Also provided is a process for facilitating the removal of a biological stain is provided wherein an inventive substrate or coating including a protease is capable of enzymatically degrading of one or more components of the biological stain to facilitate biological stain removal from the substrate or said coating.
1. A composition for facilitating biological stain removal comprising:
a liquid bioactive coating material comprising a surfactant;
a compound selected from the group consisting of ammonia, a water miscible alcohol having 1 to 6 carbon atoms, and combinations thereof; and
a thermolysin-like protease, said protease capable of degrading a biological stain component.
2. The composition of claim 1 wherein said thermolysin-like protease is an active extracellular portion of bacterial neutral thermolysin-like-protease from Geobacillus stearothermophilus.
3. The composition of claim 1 wherein said liquid bioactive coating material includes said protease at a specific activity in excess of 20,000 U/g.
4. The composition of claim 1 wherein the pH of said liquid bioactive coating material is greater than 5.0.
5. The composition of claim 1 wherein said protease is in solution in said liquid bioactive coating material.
6. The composition of claim 1 wherein said liquid bioactive coating material comprises said alcohol, said alcohol present at less than 0.8% by weight.
7. The composition of claim 1 wherein said liquid bioactive coating material comprises said ammonia.
8. The composition of claim 1 wherein said composition comprises said alcohol, and said alcohol is methanol.