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DPPH (A) and ABTS (B) assay show free radical inhibition by both POC and POCA, whereas PLLA and ePTFE have no radical scavenging activity. POC and POCA both chelate iron ions, with POCA exhibiting stronger chelation (C). POC and POCA both inhibit lipid peroxidation, while ePTFE and PLLA do not have any effect on lipid peroxidation. N≥3, Mean ± SD. *p<0.05 **p<0.01, ***p<0.001
