METHOD FOR THE PURIFICATION OF SUBSTITUTED CYCLOPENT-2-EN-1-ONE CONGENERS AND SUBSTITUTED 1,3-CYCLOPENTADIONE CONGENERS FROM A COMPLEX MIXTURE USING COUNTERCURRENT SEPARATION
申请人:Carroll Brian J.
公开号:US20110257074A1
公开(公告)日:2011-10-20
Methods of purifying individual congeners of substituted cyclohexa-2,4-dienones, substituted cyclohexane-1,3,5-triones, substituted cyclopent-2-en-1-ones, and substituted 1,3-cyclopentadiones and compositions using the same are disclosed. The purification method includes the steps of: (a) selecting a congener to be isolated; (b) dissolving the mixture of congeners in a bi-phasic solvent system specific to the selected congener to be isolated, wherein said bi-phasic system has a partition coefficient from about 0.5 to 5.0; (c) subjecting the mixture dissolved in the bi-phasic solvent system to a counter current chromatography; and (d) isolating the selected congener in substantially pure form.
AFFINITY POLYMERS AND METHODS FOR REDUCING PURINE LEVELS IN COMPLEX MIXTURES
申请人:NITTO DENKO CORPORATION
公开号:US20190329187A1
公开(公告)日:2019-10-31
This disclosure relates to an affinity polymer composite comprising a product of reacting a precursor mixture comprising at least one cross-linking monomer component having two or more ethenyl moieties suitable for polymerization; wherein the affinity polymer composite has a first binding energy with a purine compound that is at least 1 kcal/mole more favorable than a second binding energy with a flavor compound in a complex mixture. Some embodiments include a filtration medium comprising the affinity polymer composite described herein, wherein the affinity polymer composite has a primary particle diameter of about 45 micrometers to about 150 micrometers. Some embodiments include a filtration column comprising the filtration medium described herein. Some embodiments include a method for the removal of a purine compound from a complex mixture using the filtration medium described herein.