Antibacterial and Antioxidant Compounds from the Flower Extracts of Vernonia amygdalina

Table 1

Inhibition zone of the extracts and pure compounds of flowers of V. amygdalina.

Extract/compounds/control	Zone of inhibition (mm)
	E. coli	K. pneumoniae	P. mirabilis	S. aureus	S. bacillus
Chloroform extract	6	6	6	21	6
Acetone extract	10	12	11	17	12
Vernolide	10	12	6	19	12
Isorhamnetin	10	14	12	11	9
Chloramphenicol	18	18	18	18	18
DMSO (control)	0	0	0	0	0

Chloramphenicol and DMSO were used as the positive and negative controls, respectively.