The biosurfactants extracted from the BC and purified in amount of 2.1 g/L are identified by IR as lipopeptide and glycolipids and possess ?CMC? value at room temperature 36 mg/L only.

• 从发酵液中提取并纯化的生物表面活性剂；含量为2.；1g/L；用IR方法鉴定为脂肽和糖脂；室温时其临界胶束浓度仅为36mg/L。