Process for producing purified anthocyanin and crystalline anthocyanin
US7211413B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2001 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Jun 2, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P19/44
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Provided are a process for producing purified anthocyanidin glucoside in which a rhamnose end of anthocyanidin rutinoside is cleaved using rhamnosidase to convert the anthocyanidin rutinoside component into anthocyanidin glucoside, the anthocyanidin glucoside component being then purified and isolated; or a crystalline anthocyanidin glucoside salt obtained by further crystallizing the purified anthocyanidin glucoside and a process for producing the same.Also provided are a process for producing purified anthocyanidin rutinoside in which a glucose end of anthocyanidin glucoside is cleaved using β-glucosidase to degrade and remove the end, the anthocyanidin rutinoside component being then purified and isolated; or a crystalline anthocyanidin rutinoside salt obtained by further crystallizing the purified anthocyanidin rutinoside and a process for producing the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.