Patent ID: 7608741

Claim:
A method for a mass separation of magnolol from Magnoliae cortex or Magnoliae radix comprising the steps of: 1) crushing Magnoliae cortex or Magnoliae radix, extracting the crushed material with organic solvent, adding n-hexane to the extract so as to-obtain a n-hexane layer; 2) concentrating the n-hexane layer in a water bath at a temperature of 30-40° C. and a revolution speed of 40-200 RPM under reduced pressure so as to form a crude crystal; and 3) removing the n-hexane from the crude crystal, completely dissolving the crude crystal in chloroform, adding n-hexane to the solution, and leaving the n-hexane-containing solution to stand at room temperature so as to recrystallize the solution, wherein the mass separation does not include a column chromatography step.