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Influence of ethanol concentration on the extraction yields of anthocyanins (A) and flavonols (B); influence of antioxidant species on the extraction yields of anthocyanins (C) and flavonols (D); influence of dosage of CA on the extraction yields of anthocyanins (E) and flavonols (F). CA, carnosic acid; RA, rosmarinic acid; TBHQ, tert-butylhydroquinone; BHT, butylated hydroxytoluene; BHA, butylated hydroxyanisole.
