Process for selectively extracting procyanidins
US7485735B2 · kind B2 · utility
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31Claims
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Key dates
| Filing date | Oct 3, 2005 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Apr 17, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H15/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is described for selectively extracting cocoa procyanidins from an aqueous mixture of cocoa polyphenols by using a particular sequence of solvents to extract selected procyanidin monomers and/or oligomers. The solvents are n-butyl acetate, ethyl acetate, methyl acetate, diethyl ether, or mixtures of methyl acetate and diethyl ether. Preferably, the aqueous mixture of cocoa polyphenols is first extracted with n-butyl acetate. The mixtures of methyl acetate and diethyl ether are between 25:75 and 75:25 (v/v).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.