Patent ID: 7309504

Claim:
An ethanol insoluble part derived from a water extract of the root or stem of Acanthopanax koreanum for treatment of hepatitis or protection of liver by inhibiting apoptosis of a liver cell, wherein the ethanol insoluble part is comprised of polysaccharide with a molecular weight larger than the range of 12,000˜14,000, and, wherein said ethanol insoluble part is prepared by a process comprising the steps of: 1) obtaining said water extract of the root or stem of Acanthopanax koreanum prepared by extracting Acanthopanax koreanum with water; 2) adding ethanol to the water solution to produce the aqueous ethanol solution, wherein the final concentration of ethanol in the aqueous ethanol solution is between 50% and 90%; 3) centrifuging the aqueous ethanol solution to precipitate; and, 4) filtering the ethanol insoluble part precipitated in the aqueous ethanol solution to obtain the ethanol insoluble part.