FIGURE 1.
LAB populations in wines submitted to aging with addition of different combinations of nisin and potassium metabisulphite. Bacterial populations (log10CFU/mL) were measured after 3 months of aging. Potassium metabisulphite concentrations: 18 mg/L; 25 mg/L; 100 mg/L nisin concentrations: A = 0 mg/L, B = 0.78 mg/L, C = 6.25 mg/L, and D = 50 mg/L. Different letters (a, b, c, d, e) indicate significant differences (p < 0.05; variable parameter: nisin concentration) among data obtained for the wines treated with the same concentration of potassium metabisulphite.