β-galactosidase activity obtained using an adapted assay with A. tumefaciens NT1 (pZLR4) as bioreporter and grown in the presence of supernatants from biofilm cultures (1% v/v).

Data are the mean ± SD of three independent experiments performed in triplicate.n: percentage of induction of each supernatant with respect to SMH12 without flavonoids, defined as 100%.Each β-galactosidase activity using biofilm supernatant was individually compared to that obtained in SMH12 without flavonoids by using the Mann-Whitney non-parametrical test. Numbers on the percentage of induction column followed by * are significantly different at the level α = 5%.β-galactosidase activity obtained using an adapted assay with A. tumefaciens NT1 (pZLR4) as bioreporter and grown in the presence of supernatants from biofilm cultures (1% v/v).