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Table 1 Results of the quantitative phytochemical content analysis and antioxidant activity of the acetone leaf extracts of the nine selected plants

From: The anti-arthritic, anti-inflammatory, antioxidant activity and relationships with total phenolics and total flavonoids of nine South African plants used traditionally to treat arthritis

Plant species TPC (GAE mg/g) TFC (QE mg/g) DPPH IC50 (μg/mL) ABTS IC50 (μg/mL) TEAC FRAP
Hypericum roeperianum 472.40 ± 1.15a 515.20 ± 1.53a 34.04 ± 0.25a 27.93 ± 2.98a 0.15 ± 0.02a 0.23 ± 0.03a
Cremaspora triflora 296.07 ± 5.86b 186.53 ± 2.65b 85.48 ± 2.17b 45.77 ± 1.67b 0.13 ± 0.02a 0.16 ± 0.02a
Heteromorpha arborescens 255.07 ± 5.03c 275.53 ± 4.58c 154.77 ± 4.07c 95.67 ± 2.91c 0.07 ± 0.01a 0.06 ± 0.00a
Pittosporum viridiflorum 423.40 ± 1.15d 389.20 ± 3.21d 50.29 ± 1.23d 58.40 ± 2.68d 0.09 ± 0.01a 0.25 ± 0.07a
Bolusanthus speciosus 377.73 ± 2.65e 726.20 ± 3.79e 115.12 ± 4.81e 59.96 ± 4.23d 0.10 ± 0.02a 0.07 ± 0.01a
Calpurnia aurea 308.07 ± 2.89f 285.20 ± 8.50c 170.40 ± 4.16f 96.47 ± 8.09e 0.06 ± 0.01a 0.07 ± 0.01a
Maesa lanceolata 669.07 ± 3.79g 223.53 ± 7.55f 12.95 ± 0.78g 9.64 ± 0.45f 0.70 ± 0.08b 0.15 ± 0.01a
Elaeodendron croceum 958.40 ± 1.53h 273.86 ± 5.03c 7.72 ± 0.27g,k 3.05 ± 0.27f 1.32 ± 0.17c 0.99 ± 0.08b
Morus mesozygia 375.07 ± 3.51e 657.53 ± 2.65g 106.98 ± 2.42h 45.5 ± 3.22b 0.14 ± 0.01a 0.18 ± 0.03a
Trolox NA NA 5.58 ± 0.05g,k 6.82 ± 0.99f 1.00 ± 0.00b,c 1 ± 0.00b
Ascorbic acid NA NA 3.30 ± 0.06k 2.92 ± 0.21f 2.32 ± 0.28d 3.67 ± 0.42c
  1. Values with different letters are significantly different at p < 0.05; NA = Not Applicable