Abstract
A modern laboratory scale method for purifying .beta.-amanitin from the mushroom A. phalloides is described. The purification involves solubilizing the toxin from dried mushrooms, removing the lipids by chloroform extraction, desalting on Amberlite XAD-4, adsorption chromatography on Sephadex LH-20 at acidic and neutral pH, and ion-exchange chromatography on QAE-Sephadex. The resulting .beta.-amanitin is homogeneous by TLC and is biologically active.