The amount of bacteriocin produced was assayed from over-
night cultures. Arbitrary Units per milliliter (AU/mL) were deter-
mined as follow: two-fold serial dilutions of neutralized
supernatants were spotted (10 mL) on agar lawn inoculated with
L. innocua ATCC33090. AU were calculated considering the last
dilution that produce inhibition (n) as a clear halo and referring to
in milliliters: 2n (1000/x), where x is the volume of bacteriocin used
in the assay.