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Table 1 Total phenolic and antioxidant activities of aqueous extract of plant materials

From: Antioxidant and cytoprotective activities of Piper betle, Areca catechu, Uncaria gambir and betel quid with and without calcium hydroxide

Sample TPC (μg TAE/mg) DPPH (IC50) μg/mL FRAP (μmol Fe(II)/mg) *Lipid peroxidation inhibition (%)
Betel leaf 77.2 ± 12.6 179.5 ± 93.1 357.3 ± 129.5 83.0 ± 0.2
Areca nut 858.8 ± 53.9 7.5 ± 0.5 4127.8 ± 192.8 78.8 ± 1.0
Gambir 1142.5 ± 106.8 6.4 ± 0.8 5717.8 ± 537.6 75.2 ± 1.2
Betel quid 140.0 ± 22.3 59.4 ± 4.4 1022.2 ± 235.7 82.7 ± 0.9
Betel quid + CaOH2 45.4 ± 3.7 Not detected 71.8 ± 29.8 82.2 ± 0.5
Positive control - 4.8 ± 0.5a 16813.3 ± 131.1a 18.1 ± 2.8b
  1. Values are expressed as means ± SD (n = 9). Values within each column were significantly difference at p < 0.05 (Kruskall Wallis test). Positive control: aAscorbic acid and bα-tocopherol. *Sample tested at concentration 50 μg/mL after seven days of incubation.