Patent ID: 8182846

Claim:
A method for suppressing the production of IgE antibodies in a vertebrate with elevated IgE levels comprising administering to the vertebrate a plant extract obtained by a) heat extracting, at a temperature of about 80° C. or above, defatted ground plant material with an alkaline solution comprising an alkaline agent; b) removing particulate matter with an average particle size greater than 0.2 μm and leaving a supernatant; c) adjusting pH of the resulting supernatant to about 6.0 to about 8.0; d) filtering the supernatant resulting from step c) to obtain a retentate fraction; e) drawing off the retentate fraction and removing particles with an average molecular mass of less than 10 kDa; and f) suspending the retentate fraction resulting from step e) in an aqueous solvent having a pH of about 6 to about 8 comprising alkaline agent.