Nisin Z Production by Wild Strains of Lactococcus lactis Isolated from Brazilian (Italian Type) Fermented Sausage

Figure 3

Production of nisin Z by Lactococcus lactis ID1.5, ID3.1, ID8.5, PR3.1, and PD4.7 strains. The left column (a) shows the results of using 10 g glucose L⁻¹ and, the right column (b) shows the results of using 10 g fructose L⁻¹ as carbohydrate source. Bacteriocin activity production is presented as AU·mL⁻¹ (■); optical density at 630 nm (●) and changes in pH values (▲) are indicated. Each point represents the mean ± standard error of two independent experiments.

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