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Table 4 IC50 profile of the leaves and flowers oil of Callistemon citrinus (mgmL−1)

From: Terpene constituents of the aerial parts, phenolic content, antibacterial potential, free radical scavenging and antioxidant activity of Callistemon citrinus (Curtis) Skeels (Myrtaceae) from Eastern Cape Province of South Africa

  Callistemon citrinus Standard Antioxidant (Positive control)  
S/N Activity Leaves oil (IC50) Flowers oil (IC50) Vitamin C (IC50) β-Carotene (IC50) BHT (IC50)
1 DPPH 1.49 1.13 3.57 1.28 -
2 ABTS 0.14 0.03 0.13 - 0.19
  1. DPPH 2,2-diphenylpicrylhydrazyl radicals, ABTS 2,2′-azino-bis diammonium salt, BHT Butylated hydroxyl toluene