Patent ID: 7601368

Claim:
A composition containing Arabinogalactan-Protein (AGP), the AGP having an average molecular weight range between 10 KD to 150 KD, obtained by a process comprising the steps of: i) extracting 1 part by weight of the leaves, stems or both of Argemone Mexicana plant with 1 to 10 parts by weight of water, a C 1-3 alcohol or mixtures thereof to obtain an extract and optionally partially or completely concentrating or lyophilizing the extract; ii) subjecting the extract, partially concentrated extract or an aqueous solution of the completely concentrated or lyophilized extract as obtained in step i) to anion exchange chromatography followed by cation exchange chromatography or cation exchange chromatography followed by anion exchange chromatography to obtain a neutral extract; iii) fractionating the neutral extract obtained in step ii) with n-butanol and separating the aqueous phase and the n-butanol phase, fractionating the separated aqueous phase with n-butanol and separating the aqueous phase and n-butanol phase; and iv) mixing and agitating the aqueous phases obtained in step iii) with methanol or ethanol, and isolating precipitated solids to obtain a methanol or ethanol insoluble fraction which contains said AGP.