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:
Dec. 14, 1993
Filed:
May. 18, 1992
Nobuo Kyogoku, Osaka, JP;
Keiko Harada, Osaka, JP;
Suntory Limited, Osaka, JP;
Abstract
A crosslinked product of a primary amino group-containing compound such as proteins, chitosan or a mixture thereof is disclosed. The product has a crosslinked structure formed by crosslinking with an iridoid compound, and the blue color developed by the crosslinking is decolorized. Also, a method for decolorization of the above crosslinked product is disclosed. The method comprises reacting a crosslinked product obtained by crosslinking a primary amino group-containing compound with an iridoid compound, with at least one decolorizing agent selected from the group consisting of an oxidizing agent, a reducing agent and a reductone. The decolorized product and the method for decolorization according to the present invention can be broadly applied in the fields of foodstuffs, cosmetics, pharmaceuticals and the like where blue tone coloration is undesirable.