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Table 2 Zone of inhibition observed for Gram-negative bacteria Escherichia coli by different concentrations of extracts

From: Comparative phytochemical, antioxidant, and antibacterial study of different parts of Doigota plants (Bixa orellana L.)

SamplesZone of inhibition (mm)
10 mg/mL7.5 mg/mL5 mg/mL2.5 mg/mL
Aqueous extract (seed)9.1 ± 0.38.5 ± 0.38.1 ± 0.37.6 ± 0.3
Ethanolic extract (seed)8.5 ± 0.38.3 ± 0.28.1 ± 0.27.8 ± 0.2
Methanolic extract (seed)6.9 ± 0.26.7 ± 0.25.9 ± 0.25.4 ± 0.2
Aqueous extract (branch)10.2 ± 0.38.9 ± 0.28.5 ± 0.37.2 ± 0.2
Ethanolic extract (branch)9.2 ± 0.28.8 ± 0.27.6 ± 0.27.1 ± 0.3
Methanolic extract (branch)6.1 ± 0.25.7 ± 0.200
Aqueous extract (leaf)13.1 ± 0.39.0 ± 0.38.2 ± 0.37.4 ± 0.3
Ethanolic extract (leaf)12.6 ± 0.39.2 ± 0.28.0 ± 0.27.1 ± 0.4
Methanolic extract (leaf)12.9 ± 0.28.4 ± 0.37.8 ± 0.27.2 ± 0.2