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Table 2 Antioxidant effect (EC50) on hydrogen peroxide radicals, ABTS radicals, inhibition of β carotene and chelating power of methanol extract and soluble fractions of C. opaca leaves

From: Evaluation of antioxidant profile of various solvent extracts of Carissa opaca leaves: an edible plant

Plant extracts/chemical

EC50, µg/ml

Scavenging ability on hydrogen peroxide radicals

Scavenging ability on ABTS radicals

β-carotene bleaching inhibition

Chelating power

MLC

155 ± 3.2b

104 ± 4.6b

>250c

49 ± 1.9b

HLC

19 ± 1.1a

133 ± 3.5c

157 ± 3.12b

16 ± 0.98a

ELC

225 ± 6.39c

176 ± 4.0d

145 ± 4.3b

73 ± 2.9c

CLC

160 ± 4.7b

181 ± 3.1d

>250c

16 ± 1.1a

BLC

>250d

70 ± 3.2a

>250c

50 ± 2.3b

ALC

243 ± 2.5c

187 ± 3.8d

>250c

137 ± 3.76d

Ascorbic acid

23.04 ± 1.7a

67 ± 2.5a

Catechin

38 ± 2.8a

20 ± 1.2a

Rutin 

29.04 ± 1.5a

– 

  1. –, Not determined
  2. Each value in the table is represented as mean ± SD (n = 3)
  3. Values in the same column followed by a different letter are significantly different (p < 0.05)