Liquid/liquid extraction
US8957232B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2011 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Feb 8, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11C3/003
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method for the extraction of all unsaponifiable fraction contained in a vegetable oil, an oil originating from a micro-organism or a vegetable butter or in a co-product from the vegetable oil refining industry, such as deodorization discharge. The method includes at least: A) a step comprising the transformation of the aforementioned oils, butter or co-product from the vegetable oil refining industry or oils originating from micro-organisms into a hydro-alcoholic solution by means of, in particular, a step selected from saponification and esterification steps; B) a step comprising the extraction of the hydro-alcoholic solution in which the fatty fraction is separated from the unsaponifiable fraction by means of liquid/liquid extraction; and C) an optional step comprising the purification of the unsaponifiable fraction, selected from the group containing crystallization and liquid/liquid extraction steps. According to the invention, at least one step from the liquid/liquid extraction steps in step B, the crystallization steps in step C and the liquid/liquid extraction steps in step C is performed using a first solvent system containing a concentration of s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.