Patent ID: 7763290

Claim:
A process of preparing ginseng fraction PQ 2 A, the process comprising: (a) providing ginseng fraction PQ 2 ; (b) fractionating the ginseng fraction PQ 2 to produce an elution fraction which corresponds to a carbohydrate peak observed between 35 and 50 ml of elution volume, as determined by gel filtration chromatography using the following materials: (1) a chromatographic column containing a matrix of a spherical cross-linked co-polymer of allyl dextran and N,N′-methylenebisacrylamide, having a bed dimension of 16×600 mm, a bed volume of 120 ml, and a fractionation range (MW) of 5000 to 250,000 for globular proteins and 1000 to 80,000 for dextrans, and (2) an elution buffer of Tris-HCl containing 0.1 N HCl and 0.3 M NaCl at a pH of 7.0; and (c) isolating the elution fraction to produce ginseng fraction PQ 2 A.