Rapid Screening and Preparative Isolation of Antioxidants from <i>Alpinia officinarum</i> Hance Using HSCCC Coupled with DPPH-HPLC Assay and Evaluation of Their Antioxidant Activities

<div>HSCCC chromatogram of ethyl acetate extract of <i>A. officinarum</i> Hance. Solvent system: petroleum ether–ethyl acetate–methanol–water (0.8 : 1 : 1 : 0.8, <i>v</i>/<i>v</i>); revolution speed: 850 r/min; flow rate: 2.0 mL/min; sample size: 270 mg; UV detection wavelength: 254 nm.</div>

Journal of Analytical Methods in Chemistry

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Figure 4: Rapid Screening and Preparative Isolation of Antioxidants from <i>Alpinia officinarum</i> Hance Using HSCCC Coupled with DPPH-HPLC Assay and Evaluation of Their Antioxidant Activities 

Figure 4 | Rapid Screening and Preparative Isolation of Antioxidants from Alpinia officinarum Hance Using HSCCC Coupled with DPPH-HPLC Assay and Evaluation of Their Antioxidant Activities 