Patent ID: 7005282

Claim:
An enzyme coated with an ionic liquid, wherein the ionic liquid is an organic salt which is a liquid phase at a temperature of about 150° C. or below, wherein the ionic liquid comprises an organic cation of a heterocyclic compound and an organic or inorganic anion, the organic cation of the heterocyclic compound being selected from the group consisting of imidazolium, pyridinium, pyridazinium, pyrimidinium, pyrazinium, pyrazolium, thiazolium, oxazolium, and triazolium, or a cation of a substituted compound thereof, the organic or inorganic anion being selected from the group consisting of bis(perfluoroethyl sulfonyP)imide (N(C 2 F 5 SO 2 ) 2 − ), bis(trifluoromethyl sulfonyl)imide (N(CF 3 SO 2 ) 2 − ), tris(trifluoromethyl sulfonyl methide (C(CF 3 SO 2 ) 2 − ), trifluoromethane sulfone imide, trifluoromethyl sulfone imide, trifluoromethyl sulfonate, AsF 6 − , ClO 4 − , PF 6 − , BF 4 − , the enzyme being a lipase.