Fig. 3From: Yeasts and bacterial biosurfactants as demulsifiers for petroleum derivative in seawater emulsionsMicroscopy (×40 magnification) of the residual motor oil emulsions in sea water and distilled water with the crude (cell-free broth) and the isolate biosurfactants (at ½ CMC, at the CMC and 2 × CMC) at 24 h after initiation of the demulsification processBack to article page