Title: PGG separation and purification
Application Number: 200580005577 Application Date: 2005.01.24
Publication Number: 1930178 Publication Date: 2007.03.14
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C07H1/06;C13D3/16
Applicant(s) Name: Univ Ohio Address:
Inventor(s) Name:
Attorney & Agent: fanzheng
Abstract:
    A simple, inexpensive, and efficient method for separation and purification of the alpha- and beta- FORMS OF penta-O-galloyl-D-glucose (PGG) without the need for HPLC. The methods provided herein are useful for separating alpha-PGG or beta-PGG from a mixture that contains alpha-PGG and beta-PGG and other chemicals. The method for separation of alpha-PGG from a mixture of alpha-PGG and beta-PGG comprises the steps of: adding water to a sample containing 50% or more alpha-PGG and 50% or less beta-PGG; mixing the PGG and water to dissolve the PGG; filtering out any undissolved particles; and allowing the filtered solution to stand undisturbed until crystals form.
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