Production of bioemulsifiers by Yarrowia lipolytica in sea water using diesel oil as the carbon source

Brazilian Journal of Chemical Engineering

F. A. S. D. Souza²  A. A. Salgueiro¹  C. D. C. Albuquerque¹ 

[1] ,Universidade Federal Rural de Pernambuco Laboratório de Tecnologia de Bioativos Recife PE ,Brasil

关键词: Biosurfactant;    Bioemulsifier;    Diesel oil;    Sea water;    Yarrowia lipolytica;    Factorial design;   

DOI  :  10.1590/S0104-66322012000100007

来源: SciELO

【 摘 要 】

The objective of this work was to investigate, on a flask scale, the production of bioemulsifiers by Yarrowia lipolytica in the presence of sea water, supplemented with nitrogen and phosphate sources, using diesel oil as substrate. A full 2(4) factorial design was conducted to investigate the effects and interactions of the nutrient concentrations (diesel oil, urea, ammonium sulfate and monobasic potassium phosphate) on the response variables: emulsification activity and surface tension of the cell-free cultures. High emulsification activities (> 5,4 UEA) were determined after 168 h in all the experiments. The interactions among diesel oil, urea and monobasic potassium phosphate favored the emulsification with statistical significance. A correlation between the increase of emulsification activity and the reduction of surface tension was not identified.

【 授权许可】

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