Figure 1

Metabolic productions from Streptococcus zooepidemicus batch-cultures in the media specified in Table 1. A: complex medium with all commercial chemicals, B: complex medium replacing tryptone by tuna peptone from viscera residues, C: complex medium replacing glucose by MPW, D: medium formulated with tuna peptone and MPW. Solid lines represent the fitting functions corresponding to the experimental data (points) according to the equations (1-4). X: biomass (black circle); H: hyaluronic acid (black diamond); L: lactic acid (black square). The error bars showed in the plots are the confidence intervals of independent experiments (α = 0.05, n = 2).