Green Synthesis of Silver Nanoparticles Using Extracts of Ehretia cymosa and Evaluation of Its Antibacterial Activity in Cream and Ointment Drug Delivery Systems

Table 1

The zone of inhibition (mm) obtained with different concentrations of E. cymosa crude extracts in aqueous and methanol solvent.

Crude extract	Concentration (% w/v)	Microorganisms
		S. aureus ATCC 25923	E. coli ATCC 25922
DS	0	—	—
AC1	1	12.8 ± 0.11	10.2 ± 0.04
AC2	1.5	13.5 ± 0.03	10.9 ± 0.59
AC3	2	14.1 ± 0.20	11.4 ± 0.02
MC1	1	13.9 ± 0.30	10.8 ± 0.14
MC2	1.5	15.3 ± 0.12	11.9 ± 0.10
MC3	2	17.4 ± 0.07	13.8 ± 0.05
CI	1	21.2 ± 0.03	19.1 ± 0.06

Note. DS: distilled water (negative control), AC1, AC2, and AC3: 1%, 1.5%, and 2% aqueous crude extract, MC1, MC2, and MC3: 1%, 1.5%, and 2% methanol crude extract, respectively, and CI: 2 mg/mL ciprofloxacin infusion (positive control).