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International Journal of Phytomedicine and Phytotherapy

Table 2 α-Amylase inhibition (IC50) and binding affinities of methanolic extracts (Ki) and their DPPH radical scavenging (antioxidant) activities

From: Evaluation of the alpha-amylase inhibitory activity of Nepalese medicinal plants used in the treatment of diabetes mellitus

  α-Amylase inhibition (μg/mL) Antioxidant activity (μg/mL)
Plant IC50 value Ki value Type of inhibition IC50 value
Acacia catechu 49.9 ± 0.4 26.6 ± 6.7 Mixed 3.9 ± 0.3
Dioscorea bulbifera 413.5 ± 11.1 384.6 ± 36.8 Mixed 49.3 ± 3.6
Swertia chirata 296.1 ± 8.7 204.2 ± 17.9 Mixed 53.6 ± 2.7
Acarbosea 6.1 ± 0.1
Quercetinb 2.3 ± 0.1
  1. Acarbosea was used as the standard for α-amylase inhibition
  2. Quercetinb was used as the standard for radical scavenging activity