Ozoroa insignis reticulata (Baker f.) R. Fern. & A. Fern. Root Extract Inhibits the Production of Extracellular Proteases by Staphylococcus aureus

Table 2

The proteolytic activities of the extracellular proteases produced from S. aureus on BCG-skim milk agar plates: A, B, C, and D.

Plate	Colony diameter (mm)	Colony diameter + halo (mm)	value	Reference value	Proteolytic activity
A	10	16	0.62 < 0.69	Very strong
B	11	13	0.84	0.80–0.89	Mild
C	8	8.5	0.94	0.90–0.99	Weak
D	—	—	—	—	—

value is the ratio of the diameter of the colony to the total diameter of the colony plus the zone of hydrolysis.