Antibacterial Activity of Murrayaquinone A and 6-Methoxy-3,7-dimethyl-2,3-dihydro-1H-carbazole-1,4(9H)-dione

Table 1

Protocol for the determination of minimum inhibitory concentration.

Antibiotic stock (𝜇g mL^−1)	Vol. of antibiotic (mL)	Vol. of water (mL)	Vol. of inoculum (mL)	Final vol. (mL)	Final concentration (𝜇g mL^−1)
Nil; Nil; 500; 500; 500; 500; 4000; 4000; 4000; 4000	Nil; Nil; 0.1; 0.25; 0.50; 1.0; 0.2; 0.4; 0.6; 0.8	2.5; 2.45; 2.35; 2.20; 1.95; 1.45; 2.25; 2.05; 1.85; 1.65	0.00; 0.05; 0.05; 0.05; 0.05; 0.05; 0.05; 0.05; 0.05; 0.05	5; 5; 5; 5; 5; 5; 5; 5; 5; 5	Nil; Nil; 10; 25; 50; 100; 160; 320; 480; 640