Chemical Composition and Antioxidant Activities of Five Samples of Prunus mume Umezu from Different Factories in South and East China

Figure 1

Representative chromatogram of organic acid in umezu (λ = 210 nm). (1) Oxalic acid; (2) citric acid; (3) malic acid; (4) succinic acid; (5) lactic acid; (6) acetic acid; (7) unknown.