Process for producing high purity isoflavones

Abstract

A process for the production of a high purity isoflavone composition is disclosed. The process involves subjecting plant material to a primary chromatographic step to obtain an isoflavone enriched fraction and subjecting the isoflavone enriched fraction to a second chromatographic step. Also disclosed is a process that invloves passing the plant material through an ultrafiltration membrane which has a molecular weight cut-off range that produces a plant material permeate prior to subjecting the plant material permeate to primary and secondary chromatographic steps.

1 - 34  (cancelled).  
     
     
         35 . A product comprising a high purity isoflavone enriched fraction produced by a process comprising the steps of: 
 (a) subjecting plant material to a primary chromatographic step to obtain an isoflavone enriched fraction; and    (b) subjecting the isoflavone enriched fraction of step (a) to a secondary chromatographic step, thereby producing a high purity isoflavone enriched fraction.