Effect of Culture Conditions on the Production of an Extracellular Protease by Bacillus sp. Isolated from Soil Sample of Lavizan Jungle Park

Table 2

Effect of nitrogen source on Bacillus sp. strain CR-179 growth and protease activity. The culture density and extracellular protease activity were determined during 24 h incubation at 45°C and at initial pH 8.

Nitrogen source	Culture density (OD 600 nm)	Maximum enzyme activity (U/mL)
Corn steep liquor	1.410	336.233
Whey protein	1.114	239.870
Beef extract	1.383	203.246
Yeast extract	1.391	308.961
Tryptone	0.954	190
Peptone	1.030	119.350
Urea	0.666	46.883