Crosslinked protein crystal formulations and their use as catalysts in organic solvents
First Claim
Patent Images
1. A crosslinked enzyme crystal formulation, said formulation comprising:
- (a) a crosslinked enzyme crystal; and
(b) a surfactant, wherein said surfactant is selected from the group consisting of anionic surfactants, cationic surfactants and non-ionic surfactants;
said formulation having an activity in an organic solvent or an aqueous-organic solvent mixture which is at least 1.7 times greater than the activity of the equivalent amount of said enzyeme in either crude form or pure form.
7 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to the application of biocatalysis technology for performing selective chemical reactions. In one embodiment, this invention relates to crosslinked protein crystal formulations and their use as catalysts in chemical reactions involving organic solvents. This invention also provides methods for producing crosslinked protein crystal formulations and methods using them to optimize chemical reactions in organic solvents, including those used in industrial scale chemical processes.
38 Citations
41 Claims
-
1. A crosslinked enzyme crystal formulation, said formulation comprising:
-
(a) a crosslinked enzyme crystal; and (b) a surfactant, wherein said surfactant is selected from the group consisting of anionic surfactants, cationic surfactants and non-ionic surfactants; said formulation having an activity in an organic solvent or an aqueous-organic solvent mixture which is at least 1.7 times greater than the activity of the equivalent amount of said enzyeme in either crude form or pure form. - View Dependent Claims (2, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 39, 40, 41)
-
-
3. A crosslinked enzyme crystal formulation, said formulation comprising:
-
(a) a crosslinked enzyme crystal; and (b) a surfactant, wherein said surfactant is selected from the group consisting of anionic surfactants, cationic surfactants and non-ionic surfactants; said formulation having a specific activity per milligram of solid in an organic solvent or an aqueous-organic solvent mixture which is at least 4.3 times greater than that of said enzyme in either crude form or pure form. - View Dependent Claims (4, 5, 6, 7, 8)
-
-
9. A crosslinked enzyme crystal formulation, said formulation comprising:
-
(a) a crosslinked enzyme crystal; and (b) a surfactant, wherein said surfactant is selected from the group consisting of anionic surfactants, cationic surfactants and non-ionic surfactants; said formulation having an activity in an organic solvent or an aqueous-organic solvent mixture which is at least 19 times greater than the activity of crosslinked enzyme crystals containing no surfactant. - View Dependent Claims (10)
-
-
23. A method for increasing the activity of crosslinked enzyme crystals in an organic solvent or a mixed aqueous-organic solvent mixture, said method comprising the steps of:
-
(a) combining the crosslinked enzyme crystals with a surfactant to produce a combination; and (b) drying the combination of crosslinked enzyme crystals and surfactant in the presence of an organic solvent to form a crosslinked enzyme crystal formulation; said formulation having an activity in an organic solvent or an aqueous-organic solvent mixture which is at least 1.7 times greater than the activity of the equivalent amount of said enzyme in either crude form or pure form. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
-
Specification