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Comparison between red-skin ginseng and healthy ginseng. (A) Total phenolic compound concentrations. (B) Activities of phenylalanine ammonia-lyase. (C) Polyphenoloxidase activities. (D) Guaiacol peroxidase (GuPX) activities. Values are denoted as the mean ± standard deviation; n = 3. The different letters above column represented statistically different at p = 0.05.
