Patent ID: 6699512
Filing Date: 2004-03-02
Classification: A61K,A61P

Abstract:
A. Hypericum perforatum L oleoresin comprising not less than 10% by weight of total hyperforins and not less than 0.5% by weith of hypercins, wherein said oleoresin does not contain preservatives, and the content of said total hyperforins in said oleoresin does not substantially decrease over time, wherein said oleoresin is obtained by the process comprising the steps of: less than 10% of hyperforin and no less than 0.5% of(A) extracting Hypericum perforatum L with at least one organic solvent having a polarity of less than 0.6 to obtain an extract; (B) evaporating the solvent from the resulting extract of step (A) to obtain a product; (C) dissolving the resulting product of step (B) with an alcohol-water mixture at 40-50Â° C. to obtain a solution; (D) filtering the resulting solution of step (C) to obtain a filtrate; and (E) subjecting the resulting filtrate of step (D) to evaporation at low pressure.