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Table 5 IC50 value of standards and R. purpurea in DPPH radical scavenging model

From: Nutritional evaluation, antioxidant studies and quantification of poly phenolics, in Roscoea purpurea tubers

S. no. Extracts IC50 (µg/ml)*
1. Ascorbic acid 3.86 ± 0.057
2. Quercetin 5.93 ± 0.115
3. Rutin 6.8 ± 0.173
4. BHT 2.06 ± 0.115
5. R. purpurea 810.66 ± 1.154
  1. * Values are mean ± SD (n = 3), indicating significance at p < 0.01.