Process for the purification of sterols from hydrocarbon extracts using evaporative fractionation
US7371876B2 · kind B2 · utility
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9References
21Claims
0Family size
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Key dates
| Filing date | Sep 1, 2004 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Nov 17, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J9/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention describes a method for separating sterols from neutral substances comprising the sterols. The method generally starts with extracting a hydrocarbon fraction from neutral substances. The hydrocarbon fraction may be optionally washed with water. The neutral substances are separated from the hydrocarbon. The hydrocarbon fraction or the neutral substances are subjected to evaporation fractionating to obtain a sterol-rich fraction. The sterol-rich fraction is dissolved in a solvent, and the sterols are crystallized from the solvent. The obtained sterol crystals are separated from the solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.