Patent ID: 7300594

Claim:
A process for purifying a lipophilic fluid, the process comprising the steps of: (a) obtaining a mixture comprising a lipophilic fluid and a fabric treating composition comprising at least one original fabric treating agent having one or more functional moieties; (b) modifying the original fabric treating agent via enzyme oxidation with the functional moieties, thereby the original fabric treating agent is converted to a modified fabric treating agent; and (c) separating modified fabric treating agent from the lipophilic fluid; wherein the enzyme used in the enzyme oxidation step (b) is selected from the group consisting of mono-oxygenase, di-oxygenase, alcohol dehydrogenase, alkyl sulfatase, ammonia mono-oxygenase, carbonyl reductase, lipase, lipolase, mono-methanoxygenase and mixtures thereof.