Method for obtaining purified hydroxytyrosol from products...

Details Method for obtaining purified hydroxytyrosol from products... Method for obtaining purified hydroxytyrosol from products...

2005-02-01

2005-02-01

Shippen, Michael L. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C424S725000, C424S727000, C426S655000, 57

Reexamination Certificate

active

06849770

ABSTRACT:
The present invention relates to a method for obtaining purified hydroxytyrosol from products and by-products derived from the olive tree by means of two-step chromatographic treatment. The invention uses a non-activated ion exchange resin chromatographic method, followed by a second treatment on an XAD-type absorbent non-ionic resin which concentrates and completely purifies the hydroxytyrosol by means of elution with a methanol or ethanol:water dissolution (from 30 to 33%). The method of the invention can also be applied to two-phase pomaces, three-phase pomaces and stones if they are subjected to a steam explosion process.

REFERENCES:
patent: 6358542 (2002-03-01), Cuomo et al.
patent: 6416808 (2002-07-01), Crea
patent: 20020004077 (2002-01-01), Cuomo et al.
patent: 20030180833 (2003-09-01), Espin De Gea et al.
patent: 1317105 (2000-11-01), None
Andreassi, Marco, Thesis entitled Natural raw materials and their use in the cosmetics, 1999, 3 pages.

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