Fig. 5. Surface hydrophobicity analysis of polystyrene surface. Water contact angles were measured for PS pieces incubated for 30 days in LCFBM medium at 30 °C, under shaking conditions. (a) Control having PS (medium without bacteria), (b) PS incubated with Exiguobacterium sp. strain DR14 and (c) Exiguobacterium sp. strain DR11.