Figure 2.

(A) Antibacterial effect of HWIs (100 mg/mL) spotted on brain heart infusion (BHI) agar plates inoculated with the Streptococcus pyogenes ATCC 19615. HWIs: Hot water infusions; a: barberry roots; b: licorice roots; c: thyme flowering shoots; d: oregano flowering shoots; e: echinacea leaves; f: echinacea stems; g: echinacea flowers; h: clove flower buds; i: ginger rhizomes, and j: sage leaves. (B) Sub-culturing for minimum bactericidal concentration on BHI agar plates of four most efficient hot water infusions against S. pyogenes ATCC 19615 followed by the micro-broth dilution assay. a: licorice roots; b: barberry roots; c: oregano flowering shoots; d: thyme flowering shoots.