Patent ID: 6905714

Claim:
A composition comprising: a preparation of Eucommia ulmoides prepared by ethanol extraction thereof and chromatography a) over a hydroxypropylated, cross-linked dextran matrix having an exclusion limit for peptides of 4 kilodaltons and an exclusion limit for small organic molecules of 5 kilodaltons with elution using n-butanol or b) over a reverse phase matrix with elution by an aqueous buffer and acetonitrile gradient or c) over a diol matrix with elution using at least one organic solvent; that lacks fluorescent components exhibiting R f values of 0 and 0.4 and also lacks vanillin-sulphuric acid reactive components exhibiting R f values 0.47, 0.62, 0.71 and 1 when the composition is separated by two dimensional thin layer chromatography on silica gel and eluted in the first dimension with dichioromethane and in the second dimension with hexane.