Fig. 6

Scanning electron microscopy images of C. albicans biofilms. SEM was used to examine the effect of sophorolipids (SLs) on C. albicans biofilm formation at different magnification. Biofilms were formed on coated poly-Lysine glass cover slips for 90 min or 24 h at 37 °C. Biofilm formation of C. albicans (ATCC 90,028) in the absence (0 µg ml⁻¹) of SLs (A, B), 64 µg ml⁻¹of SLs (C, D), 125 µg ml⁻¹ of SLs (E, F), or  500 µg ml⁻¹ of SLs (G, H)