Gardenia blue pigment with high brightness and low redness and a preparation method therefor
US12202979B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 15, 2023 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Sep 15, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B69/109
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention discloses a gardenia blue pigment with high brightness and low redness and a preparation method therefor, and belongs to the technical field of pigment extraction. Genipin, an enzymolysis product of gardenia extract, is used as a raw material. Genipin and amino acids (phenylalanine, tryptophan, glycine, or tyrosine) are weighed at a molar ratio of 1:(0.375-0.75), and subjected to a polymerization reaction under a conventional condition to generate a gardenia blue precursor. The gardenia blue precursor is oxidized to develop a color, refined by using ultrafiltration membrane, and finally spray-dried to obtain the gardenia blue pigment with high brightness, low redness, and low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.