Online Microextraction Coupled with HPLC-ABTS for Rapid Analysis of Antioxidants from the Root of <i>Polygonum bistorta</i>

<div>The MS spectrum and major fragmentation pathways of gallic acid.</div>

Evidence-Based Complementary and Alternative Medicine

Figure 4: Online Microextraction Coupled with HPLC-ABTS for Rapid Analysis of Antioxidants from the Root of <i>Polygonum bistorta</i> 