The antioxidant activities of P1 and P2 were measured by ABTS assay kit (Beyotime) according to the manufacturer’s protocols34 (link). The absorbance at 734 nm was measured with a FlexStation 3 Plate Reader (Molecular Devices, USA). The data were expressed as TE/g of samples. The equation is shown as below: ABTSvalue=TroloxEquivalent/DryweightofsampleTEmmol/g
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