Bacteria taken the glycolipid surfactant as the main metabolic production and producing a little low-molecular organic acid simultaneously were selected to put on a piece of slide glass.

• 将主要代谢产物为糖脂类表面活性剂的菌种(同时产少量低分子有机酸)放在载玻片中进行实验,从中可观察到细菌由于具有化学趋向性而在油水界面处富集。