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Molecular structures of the four main γ-oryzanol (Orz)’s components (1–4). Chemical structures are composed by ferulic acid and steryl ferulates (gray background). (1) cycloartenyl ferulate; (2) 24-methylenecycloartanyl ferulate; (3) campesteryl ferulate; and (4) sitosteryl ferulate. In the human body, Orz can be metabolized to (5) ferulic acid, and steryl ferulates closely similar to (6) cholesterol.
