The main yeast species were H. guilliermondii,
Pichia kudriavzevii and Kluyveromyces marxianus which grew in a similar
succession for fermentations in the absence and presence of nisin
(Fig. 1c, d). The main species of acetic acid bacteria were Gluconobacter
frateurii and Acetobacter pasteurianus which grew similarly in both fermentations
(Fig. 1e, f). L. plantarum was the only species of LAB found
in the control (no nisin) fermentation and grew to 106 CFU/ml before
decreasing to 104
–105 CFU/g (Fig. 1e). This species was not detected
during fermentation in the presence of nisin (Fig. 1f).