Process for isolating genistin from mixtures of soy isoflavones
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United States of America Patent
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Aug 1, 2006
Grant Date -
Nov 20, 2003
app pub date -
Mar 26, 2003
filing date -
Mar 26, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for enriching the relative concentration of genistin from a mixture of isoflavones is described. In accordance with one aspect of the invention, the process comprises providing a material containing a mixture of isoflavones, extracting the material with an aqueous organic solvent solution, adding calcium oxide or calcium hydroxide to the extract to form calcium-isoflavone complexes and separating precipitated calcium-isoflavone complexes from the extract. The precipitated calcium-isoflavone complexes contain a higher concentration of genistin complexes than daidzin and glycitin complexes.
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