Identification of a New Antibacterial Sulfur Compound from Raphanus sativus Seeds

Table 4

Antibacterial activity of fraction 2 tested against various pathogenic bacteria. Each value is the mean ± standard deviation of three replicates.

Bacteria	Inhibition zone (mm)		MIC (mg/mL)
	MSPSA fraction (2 mg/well)	Chloramphenicol (0.16 mg/well)	MSPSA fraction	Chloramphenicol
S. pyogenes	13 ± 2	15 ± 2	1	0.0625
S. aureus	13 ± 2	15 ± 1	0.5	0.0625
E. coli	25 ± 2	29 ± 2	0.5	0.0078
K. pneumoniae	15 ± 1	15 ± 1	1	0.0625
S. typhimurium	19 ± 2	27 ± 2	0.5	0.0078

2 mg of dried fraction was dissolved in 100 μL of 15% methanol and the whole volume was added to the well.
Inhibitory zones in mm, including diameter of the well (6.0 mm).