Antibacterial and Antioxidant Compounds from the Flower Extracts of Vernonia amygdalina

Figure 3

Zone of inhibition of constituents of the flowers of V. amygdalina against S. aureus. Note: 1 and 3 are inhibition zones exhibited by DMSO while 4 represents chloramphenicol; 2, 6, 7, 8, and 9 represent inhibition zone displayed by the hexane extract, chloroform extract, acetone extract, isorhamnetin, and vernolide at 1 mg/mL; 5 is hexane extract at 0.5 mg/mL.