Deacidification of vegetable oils
US5414100A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1993 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Aug 27, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11B3/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A chromatographic process for deacidification of vegetable oils at ambient temperature. According to the process, which can be retrofitted into deacidification operations using miscella refining or solvent extraction, crude vegetable oil is dissolved in a solvent such as isopropyl alcohol and passed through a column of activated alumina (aluminum oxide) at room temperature. The process, which eliminates physical contact between both oil and an alkaline reagent and oil and water, simplifies subsequent bleaching processes by also removing some color pigments. The spent alumina can be reactivated by washing it with a dilute solution of sodium hydroxide or potassium hydroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.