Production of Prodigiosin Using Tannery Fleshing and Evaluating Its Pharmacological Effects

Table 2

Effect of nitrogen sources as additive on prodigiosin production by Serratia marcescens NPLR1 at 37°C and pH 7.

Prodigiosin (mg/mL)
Concentration of nitrogen sources (w/v)
Nitrogen sources	0.5%	1%	1.5%	2%
Casein	1.65	1.89	2.46	2.97
Gelatin	1.98	2.34	2.67	2.89
Yeast extract	0.156	0.235	0.924	1.276
Peptone	0.169	0.547	1.25	1.62
Tryptone	0.025	0.156	0.324	0.367
Sodium nitrate	BDL	BDL	BDL	BDL
Urea	0.012	0.036	0.089	0.124
Ammonium sulfate	BDL	BDL	BDL	BDL
Ammonium nitrate	0.037	0.068	0.152	0.184
Potassium nitrate	BDL	BDL	BDL	BDL
Monosodium glutamate	0.856	1.23	1.67	1.66
Diammonium phosphate	0.624	0.951	1.35	1.87
Glycine	0.321	0.576	0.864	1.26

BDL: below detectable limit.