Enzyme granules containing phosphated starch

US6380140B1 · kind B1 · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Kathleen Paatz · Goldkronach, DE
• Wilfried Raehse · Goldkronach, DE
• Werner Pichler · Kundl, AT
• Horst Upadek · Erkrath, DE

Key dates

• Filing date: Mar 22, 1999
• Grant date: Apr 30, 2002
• Expiry date: Mar 22, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C12N9/98
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Enzyme granules suitable for incorporating into detergents or cleaners are provided containing an enzyme, a carrier material and a granulation auxiliary containing phosphated starch. The phosphated starch preferably has a mean degree of phosphation ranging from 1.5 to 2.5. Carrier materials include starch, cereal flour, cellulose, alkali metal aluminosilicate, layer silicate and alkali metal salts. Enzymes include proteases, lipases, amylases and cellulases. A preferred carrier material contains water-swellable starch, sucrose, cereal flour and cellulose powder. The granulation auxiliary may contain a co-granulation auxiliary selected from polyethylene glycol having an average molecular weight of from 200 to 6,000, 1,2-propylene glycol and a poly-ethoxylate having a specified formula. Preferred granules have a mean particle size of from 0.3 to 3 mm. The granules are produced by forming a mixture containing an aqueous enzyme-containing liquid such as a concentrated fermentation broth, the carrier material and the granulation auxiliary, extruding the mixture, cutting the extruded mixture to obtain granules, and optionally spheronizing and drying the granules.