Table 4

Nitrogen source	L-Ornithine (g/L)^a	OD600^a
2 % Corn steep liquor	3.25±0.01	17.38±0.58
2 % Yeast extract	4.59±0.05	24.57±0.05
2 % Beef extract	2.14±0.03	19.67±0.45
2 % Peptone	2.24±0.03	25.76±0.06
2 % Urea	1.13±0.01	6.37±0.10
5 % (NH₄)₂SO₄	0.91±0.01	21.88±0.32
5 % NH₄NO₃	0.57±0.01	7.63±0.26
5 % NH₄Cl	0.80±0.01	13.78±0.20
2 %Yeast+5 % (NH₄)₂SO₄	6.01±0.03	43.45±0.10

^a Data represent the mean of the triplicate cultures±standard deviation

Table 4: Effects of various nitrogen sources on growth and L-ornithine production in Corynebacterium glutamicum ATTC13032 (ΔargFΔproBΔkgd)