Its composition and method for extracting anthocyanins from black rice

摘要

A process of extracting a composition comprising anthocyanins from black rice (Oryza sativa L) comprises separating an outer layer from a starchy endosperm in de-hulled black rice; adding a solution of at least one organic solvent and an acid to the separated outer layer; filtering and removing the solvent and the acid from the separated outer layer to produce a pigment fraction; separating constituents of the pigment fraction; and collecting the anthocyanin composition therefrom. This composition is useful in enhancing and/or preserving the stability of HDL-C and the atherogenic lipioproteins such as LDL-C, VLDL-C, and IDL-C from oxidation, in preventing, reducing, eliminating or ameliorating injuries due to oxidative stress, and in preventing, reducing, eliminating or ameliorating the development of atherosclerotic lesions and inflammation associated therewith.