Biomass and polymer production by S. meliloti CFR 14 in different
concentrations of ammonium sulfate as nitrogen source (g/L):1¼0.5 (0.106 g N);
2¼1.0(0.212 g N);3¼1.5(0.318 g N)and 4¼2.0 (0.424 g N) and sucrose
(30 g/L¼12.64 g C).Results are average of three independent experiments with
standard deviation. Means without a common lower case letter for each parameter
are significantly different(po0.05).