The invention belongs to the production field of microbial fermentation, and in particular relates to an efficient grease degrading bacterium and an application thereof. The efficient grease degrading bacterium is of acinetobacter UC13, wherein the acinetobacter UC13 is preserved in CGMCC (China General Microbiological Culture Collection Center) on June 24th, 2013; the preservation number of the acinetobacter UC13 is CGMCC No : 7818. The invention further relates to applications of the efficient grease degrading bacterium in treatment of kitchen wastes or petroleum hydrocarbon contaminants containing greases and in industrial refining relevant to the greases. A biological surfactant is a fermentation product obtained by fermenting the acinetobacter UC13. The biological surfactant is used for eliminating industrial greases and contaminants in the kitchen wastes containing the greases. The invention provides an extraction method of the biological surfactant. The extraction method is simple to operate and can be used for ensuring the high activity of the biological surfactant.
; 秦松
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