The PCL film was examined for surface changes through scanning
electron microscopy (Hitachi SU 1500, Japan) after incubation
with strain MRL-TL. Samples were mounted on the copper stubs
with gold paint after thorough washing with sterile distilled water.
Gold coating was carried out in vacuum by evaporation in order to
make the samples conducting. The images of the test samples were
compared with those of abiotic control.