Method of preparing paprika red pigment with low polycyclic aromatic hydrocarbons
US11969004B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2021 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Oct 21, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA23V2002/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of preparing paprika red pigment with low polycyclic aromatic hydrocarbons includes (1) drying, crushing and granulating mature peppers to obtain pepper particles; (2) extracting the pepper particles with a vegetable oil in a rotocel extractor to obtain a paprika red pigment solution; (3) extracting the paprika red pigment solution with an ethanol solution in a liquid-liquid extractor to remove spicy substances; (4) running the paprika red pigment solution through a low-pressure chromatography column to remove polycyclic aromatic hydrocarbons; and (5) concentrating the paprika red pigment solution to obtain the paprika red pigment with low polycyclic aromatic hydrocarbons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.