Evaluation of Antioxidant Compounds, Antioxidant Activities, and Mineral Composition of 13 Collected Purslane (Portulaca oleracea L.) Accessions

Table 3

1,1-Diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activity of 13 different accessions of purslane.

Purslane accessions	Inhibition ± SD (%)	Regression equation (𝑟^2)	IC50^a,b (mg mL^−1)
V1	59.54±0.39^c	𝑦=48.72𝑥−94.03 (𝑟^2=0.852)	2.95±0.01^c
V2	48.63±0.33^g	𝑦=55.89𝑥−94.12 (𝑟^2=0.962)	2.58±0.01^h
V3	66.81±0.56^a	𝑦=52.89𝑥−100.3 (𝑟^2=0.917)	2.83±0.02^e
V4	60.59±0.67^b	𝑦=45.68𝑥−83.84 (𝑟^2=0.893)	2.92±0.02^d
V5	41.30±0.38^i	𝑦=55.73𝑥−100.3 (𝑟^2=0.929)	2.70±0.01^f
V6	53.18±0.25^e	𝑦=53.36𝑥−114.6 (𝑟^2=0.926)	3.09±0.01^b
V7	50.61±0.29^f	𝑦=52.89𝑥−84.49 (𝑟^2=0.965)	2.54±0.04^ij
V8	50.66±0.46^f	𝑦=53.28𝑥−84.59 (𝑟^2=0.962)	2.54±0.01^ij
V9	41.25±0.11^i	𝑦=58.23𝑥−142.1 (𝑟^2=0.950)	3.29±0.01^a
V10	44.04±0.38^h	𝑦=59.58𝑥−107.4 (𝑟^2=0.937)	2.65±0.01^g
V11	57.80±0.13^d	𝑦=47.33𝑥−91.20 (𝑟^2=0.857)	2.98±0.00^c
V12	51.35±1.64^f	𝑦=58.46𝑥−97.53 (𝑟^2=0.936)	2.52±0.03^j
V13	49.24±0.35^g	𝑦=53.97𝑥−87.96 (𝑟^2=0.935)	2.56±0.01^hi

aConcentration of sample required to scavenge 50% of free radicals or to prevent lipid peroxidation by 50%.
bMeans with different letters in the same column are significantly different at 𝑃<0.05.