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

Table 7

Minimum quantity of the test sample loaded into the ointments that are required to inhibit the test microorganisms.

Test sample	Minimum inhibitory concentrations (% µg/ml)
	S. aureus		E. coli
	Clinical isolates	ATCC 25923	Clinical isolates	ATCC 25923
ACO	0.031	0.675	0.125	0.125
MCO	0.031	0.031	0.675	0.675
ASO	0.016	0.016	0.016	0.016
MSO	0.008	0.016	0.016	0.016
CO	0.016	0.016	0.016	0.016

Note. ACO: aqueous crude extract ointment; MCO: methanol crude extract ointment; ASO: aqueous SNPs ointment, MSO: methanol SNP ointment, and CO: ciprofloxacin ointment (positive control).