Figure 1.
(A) Biofilm formation by S. epidermidis RP62A and S. epidermidis O-47 in polystyrene 24-wells microtiter plate wells coated with Gut medium (NT) and SN_TAE2020 obtained after 72 h of growth. (B) Effect of SN_TAE2020 on biofilm formation. (C) Effect of SN_TAE2020 on 24 h mature biofilm. (D) Effect of SN_TAE2020 treated with proteinase K on biofilm formation. (E) Effect of SN_TAE2020 organic extract (1 mg mL−1) on biofilm formation. Data are reported as the percentage of residual biofilm. Each data point represents the mean ± SD of six independent samples. The results are expressed as the percentage of biofilm formed in the presence of SN_TAE2020 or ExEx TAE2020 compared to untreated bacteria (100%). Biofilm formation was considered unaffected in the range of 90–100%. Differences in mean absorbance were compared to the untreated control and considered significant when p < 0.05 (* p < 0.05, ** p < 0.01, *** p < 0.001) according to the Student t-test.