Liquid enzyme preparations

• US 4,943,530 A
• Filed: 10/16/1989
• Issued: 07/24/1990
• Est. Priority Date: 02/13/1987
• Status: Expired due to Term

• Current Assignee: ROHM Co., Ltd.
• Original Assignee: ROHM Co., Ltd.
• Inventors: Taeger, Tilman, Christner, Juergen, Pfleiderer, Ernst, Bernschein, Ursula
• Primary Examiner(s): Wax, Robert A.
• Application Number:
  US07/421,576
• Time in Patent Office: 281 Days
• Field of Search: 435/188, 435/192, 435/198, 435/219, 435/265
• US Class Current: 435/188
• CPC Class Codes: C11D 3/38663 Stabilised liquid enzyme compositions
• CPC Class Codes: C12N 9/96 Stabilising an enzyme by forming an adduct or a composition; Forming enzyme conjugates
• CPC Class Codes: C14C 1/065 Enzymatic unhairing

Abstract

Liquid enzyme preparations comprising at least one anhydrous organic liquid as a vehicle for one or more enzymes and methods for using such preparations e.g. in beamhouse operations in the commercial production of leather.

Claims

1. A liquid enzyme formulation comprising at least one enzyme dispersed in a substantially anhydrous 5- or 6-membered cyclic carbonate ester as a liquid carrier vehicle therefor together with from 0.1 to 6 percent, by weight of said organic liquid, of a finely divided solid inroganic dispersing agent.

2. A liquid enzyme formulation as in claim 1 comprising a protease.

3. A liquid enzyme formulation as in claim 1 comprising an amylase.

4. A liquid enzyme formulation as in claim 1 comprising a lipase.

5. A liquid enzyme formulation as in claim 1 comprising a catalase.

6. A liquid enzyme formulation as in claim 1 wherein said finely divided solid inorganic dispersing agent is selected from the group consiting of water insoluble salts of the alkaline earth metals, aluminum hydroxide, talc, clays and silicon dioxide.