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Table 2 Results of DPPH radical scavenging activity (IC 50 ), FRAP assay, Ferrous chelation activity and Inhibition of lipid peroxidation (LPO)

From: Methanolic extracts of Withania somnifera leaves, fruits and roots possess antioxidant properties and antibacterial activities

Sample

DPPH IC50 (μg/ml)

FRAP (mmole Fe/kg)

Fe2+ chelation IC50 (mg/ml)

% of LPO inhibition

WSLEt

101.73±8.96c

3.29±8.03c

0.22±0.04c

79.67±3.85c

WSREt

801.93±7.92a

2.26±1.46e

0.37±0.02b

69.87±4.85d

WSFEt

345.68±8.98b

3.13±21.52d

0.65±0.02a

72.11±6.40d

Ascorbic acid

25.95±1.08d

10.86±9.52b

NA

100.28±1.07b

BHT

38.14±0.89d

12.57±13.23a

NA

NA

EDTA

NA

NA

0.13±0.01d

NA

TBHQ

NA

NA

NA

104.516±6.34a

  1. Different letters in each column indicate a significant difference (p<0.05). NA = Not applicable.