| abstract |
A perhydrolysis system or activated oxidant system for in situ generation of peracid in aqueous solutions is disclosed including an esterase or lipase enzyme, a source of hydrogen peroxide, and a functionalized ester substrate having the structure (* CHEMICAL STRUCTURE *) wherein R is a substituent having at least one carbon atom and X is a functional moiety or group. Preferred substrates include glycerides, ethylene glycol derivatives and propylene glycol derivatives. The system is adapted for use in both high and low temperature wash conditions. In one embodiment, a lipase enzyme is employed with an insoluble substrate and an emulsifying agent. In another embodiment, an esterase and/or lipase enzyme, a glyceride substrate and hydrogen peroxide produce a peracid with active oxygen from a peracid of at least about 0.5 ppm. Bleaching processes and stain removal capabilities are also disclosed. |