The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2002
Filed:
Feb. 05, 1998
Arne Agerlin Olsen, Virum, DK;
Annette Prento, Kdbakken, DK;
Novozymes A/S, Bagsvaerd, DK;
Abstract
Modified enzymes are prepared for use in skin care products by covalently coupling to the enzymes from 4 to 70 polymeric molecules with or without a linker such as a triazine ring. Molecular weight of the polymeric molecules may be from 1 to 35 kDa and of the enzymes from 15 to 100 kDa. The number and weight of polymeric molecules coupled is balanced with the weight and/or surface area of the enzymes. Enzymes include proteases such as subtilisins, lipases and oxidoreductases such as laccases and superoxide dismutase, and polymeric molecules include polysaccharides such as dextran or pullulan and polyalkylene oxides such as polyethylene glycol. The polymeric molecules may be coupled to the enzymes at the N-terminal amino group and/or lysine residues, and preferably at a position more than 5 Å from the active site of the enzymes. A preferred modified enzyme is a protease having from 5 to 13 coupled polymeric molecules. Skin care products containing the modified enzymes have improved stability and reduced allergenicity as compared to the products containing the unmodified enzymes.