Antimicrobial Activity of Artemisinin and Precursor Derived from In Vitro Plantlets of Artemisia annua L.

Table 2

Antimicrobial activity of artemisinin (6 mg/mL) isolated from three clones of A. annua L., streptomycin (6 mg/mL) as positive control and acetonitrile as negative control tested by disk diffusion assay.

Microorganisms	Inhibition zone (mm)
	Artemisinin			Control
	TC1	TC2	Highland	Streptomycin (positive )	Acetonitrile (negative)
Bacillus subtilis	1±0.41^a	1±0.82^a	1±0.82^a	1±0.41^a	0±0.00^b
Staphylococcus aureus	2±1.15^a	3±1.58^a	3±1.58^a	3±2.24^a	0±0.00^b
Bacillus thuringiensis	1±0.00^a	1±0.00^a	1±0.00^a	1±0.00^a	0±0.00^b
Escherichia coli	0±0.00^b	0±0.00^b	0±0.00^b	3±0.00^a	0±0.00^b
Salmonella sp.	1±0.00^a	2±1.29^a	1±0.00^a	1±0.00^a	0±0.00^b
Candida albicans	0±0.00^b	0±0.00^b	0±0.00^b	10±0.82^a	0±0.00^b

Values are mean inhibition zone (mm) ± SD of three replicates.
Mean values of inhibition zones of each microorganism followed by the same alphabet were not significantly different (Tukey test, 𝑃≤0.05).