Natural blue-shade colorants and methods of making and using same
US10499669B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2016 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Dec 13, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA23V2002/00
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
Composition having a blue color including a buffer, an anthocyanin, and a divalent ion source. The composition may comprise an anthocyanin and a divalent ion source, wherein the average variation of ΔE*ab of the composition is less than 30% of the average variation of ΔE*ab of a control composition after exposure of the composition and the control composition to a 400 to 765 W/m2 light source for a period of time. The composition may comprise an anthocyanin and a divalent ion source, wherein the composition exhibits a less than 20% change in the area beneath the reflectance colorimeter spectral curve of the composition from 430 nm to 530 nm measured over a period of time. In another aspect, a method of stabilizing a blue colorant is provided. The method may comprise combining a buffer, an anthocyanin, and a divalent ion source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.