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Table 1 Effect of phytococktail methanol and n-hexane extracts on DPPH and ABTS radical-scavenging capacities a

From: Chemical composition and antioxidant capacities of phytococktail extracts from trans-Himalayan cold desert

Concentration (μg/ml)   Scavenging capacity (%)
   DPPH radical-scavenging capacity ABTS radical-scavenging capacity
  PCMb PCHc QRd AAe BHTf PCM PCH QR AA BHT
2.5 - - 19.92 ± 1.53 17.71 ± 3.03 6.64 ± 0.78 - - 35.24 ± 3.43 34.29 ± 1.75 7.43 ± 1.33
5 - - 41.85 ± 5.12 32.23 ± 8.30 9.77 ± 2.95 - - 64.76 ± 7.07 66.14 ± 15.94 13.91 ± 2.71
10 - - 63.22 ± 4.50 63.93 ± 1.59 15.30 ± 1.13 - - 86.84 ± 1.57 87.15 ± 0.92 27.71 ± 1.10
15 - - 83.71 ± 8.59 77.93 ± 4.40 18.49 ± 0.56 - - 87.79 ± 0.18 87.69 ± 0.18 34.39 ± 2.78
20 3.45 ± 2.26 31.45 ± 3.77* 87.83 ± 0.24*$ 88.48 ± 0.90*$ 25.33 ± 0.81*$#Φ 3.29 ± 0.49 3.40 ± 1.29 87.79 ± 0.18*$ 88.00 ± 0.18*$ 42.36 ± 0.55*$#Φ
40 10.48 ± 1.18 34.05 ± 3.10* 88.61 ± 0.24*$ 88.93 ± 0.45*$ 36.78 ± 5.88*#Φ 9.87 ± 1.39 4.25 ± 0.66* 87.79 ± 0.18*$ 87.90 ± 0.00*$ 60.40 ± 4.94*$#Φ
60 13.61 ± 0.30 35.29 ± 6.13* 88.93 ± 0.09*$ 89.06 ± 0.39*$ 58.07 ± 4.29*$#Φ 15.29 ± 3.23 8.81 ± 0.80* 88.11 ± 0.18 *$ 88.22 ± 0.55*$ 74.84 ± 1.39*$#Φ
80 16.41 ± 0.34 41.15 ± 3.28* 88.93 ± 0.18*$ 89.26 ± 0.39*$ 62.89 ± 3.20*$#Φ 22.08 ± 0.18 22.93 ± 2.87 88.32 ± 0.37*$ 88.22 ± 0.55*$ 76.86 ± 0.49*$#Φ
100 20.38 ± 2.79 42.51 ± 1.44* 89.13 ± 0.24*$ 89.58 ± 0.11*$ 65.30 ± 3.07*$#Φ 30.15 ± 1.51 33.33 ± 3.80 88.43 ± 0.49*$ 88.54 ± 0.32*$ 81.00 ± 1.02*$#Φ
150 27.99 ± 1.59 44.14 ± 0.39* - - - 44.27 ± 1.39 48.83 ± 2.12* - - -
200 32.03 ± 2.07 44.66 ± 0.63* - - - 57.22 ± 1.29 61.36 ± 2.41 - - -
250 34.18 ± 1.56 46.55 ± 4.06* - - - 64.65 ± 1.65 68.90 ± 1.75* - - -
300 39.78 ± 1.64 49.35 ± 0.49* - - - 74.95 ± 1.29 73.57 ± 2.23 - - -
400 49.35 ± 2.47 52.80 ± 4.26 - - - 85.46 ± 0.80 75.58 ± 2.71* - - -
500 60.81 ± 4.01 59.05 ± 5.21 - - - 87.79 ± 0.18 76.43 ± 3.91* - - -
RSa50 values 393.57 319.00 8.09 9.23 51.92 181.98 183.37 3.42 3.39 33.15
EC50 values 7.39 5.99 0.15 0.17 0.98 2.84 2.86 0.05 0.05 0.52
ARP values 13.53 16.69 666.67 588.24 102.04 35.21 34.97 1926.72 1941.75 192.31
AEAC values 2345.19 2893.41     2170.56 2154.11    
  1. aMean ± SD of three replicates. p < 0.05: *compared with PCM; $compared with PCH; #compared with quercetin; Φcompared with ascorbic acid; bPhytococktail methanol extract; cPhytococktail n-hexane extract; dQuercetin; eAscorbic acid; fButylated hydroxytoluene.