Silica adsorbent treatment for removal of chlorophyll derivatives from triacylglycerol-based oils
US11098265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2020 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Mar 24, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11B3/003
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a process for treating an oil comprising a chlorophyll derivative. In particular, the present disclosure relates to an improved process for removing impurities, including chlorophyll derivatives and/or trace metals, from an oil using an adsorbent comprising a silica treated with an alkali earth metal oxide, such as magnesium oxide. The process comprises contacting the oil with the adsorbent, wherein the pH of the silica is about 7 or greater, including from about 7 to about 10. The process may further comprise contacting the oil with a polypeptide having decolorase activity or a composition comprising the polypeptide, prior to contact with the adsorbent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.