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Table 2 Antioxidant indices of isolated theaflavin and thearubigins

From: Lipid peroxidation diminishing perspective of isolated theaflavins and thearubigins from black tea in arginine induced renal malfunctional rats

Solvents

Time

Means

30 min

60 min

90 min

DPPH activity (theaflavin)%

 Ethanol

80.21 ± 2.31

87.51 ± 4.21

82.11 ± 5.91

83.27 ± 1.23a

 Methanol

75.10 ± 2.60

81.08 ± 4.30

78.03 ± 3.60

78.08 ± 3.74b

 Water

72.37 ± 3.12

79.49 ± 4.92

75.97 ± 4.92

75.94 ± 2.65c

 

75.89 ± 3.92c

82.69 ± 5.10a

78.03 ± 4.31b

 

DPPH activity (thearubigins)%

 Ethanol

62.58 ± 3.21

74.26 ± 1.90

69.33 ± 4.01

68.72 ± 3.61a

 Methanol

60.75 ± 3.26

63.26 ± 1.42

61.03 ± 1.36

61.68 ± 2.69b

 Water

58.18 ± 4.32

62.03 ± 1.93

60.13 ± 3.02

60.11 ± 1.36b

 

60.50 ± 2.36c

66.51 ± 1.32a

63.49 ± 2.13b

 

ß-carotene (theaflavin)%

 Ethanol

63.16 ± 2.31c

73.23 ± 3.60a

69.85 ± 3.42b

68.74 ± 4.31a

 Methanol

60.15 ± 3.62e

67.35 ± 2.91d

65.12 ± 4.13d

64.20 ± 4.72b

 Water

59.61 ± 4.12 h

64.16 ± 3.12 g

61.04 ± 1.94f

61.27 ± 2.30c

 

62.61 ± 3.12c

68.91 ± 2.42a

65.33 ± 4.22b

 

ß-carotene (thearubigins)%

 Ethanol

60.16 ± 2.31c

70.23 ± 2.81a

66.85 ± 3.10b

63.74 ± 1.22a

 Methanol

58.15 ± 1.52e

68.35 ± 2.33d

62.12 ± 4.31d

62.87 ± 3.20b

 Water

56.61 ± 2.90 h

65.16 ± 1.92 g

61.04 ± 3.62f

60.93 ± 4.16b

 

59.30 ± 3.13c

67.91 ± 2.31a

63.33 ± 4.23b

 
  1. Values are mean ± SD. Values in same column within each parameter with different letters were significantly different from each other (p ≤ 0. 05)