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has been cited by the following article:

• TITLE: Physicochemical Properties of Rhamnolipid Biosurfactant from Pseudomonas aeruginosa PA1 to Applications in Microemulsions

  AUTHORS: Anderson Nogueira Mendes, Lívia Alves Filgueiras, José Carlos Pinto, Marcio Nele

  KEYWORDS: Rhamnolipids, Surface Tension, Emulsion Stability, Microemulsions

  JOURNAL NAME: Journal of Biomaterials and Nanobiotechnology, Vol.6 No.1, January 21, 2015

  ABSTRACT: Interfacial properties rhamnolipids from an extract produced by a strain of Pseudomonas aeruginosa were analyzed in this study. The extract of rhamnolipid was characterized by surface tension in different conditions; interfacial tension with different hydrocarbons; critical micelle concentration under different pH and temperatures; particle size and emulsification capacity using laser light profiling. It was observed that the rhamnolipids extract are sensitive to variations in pH, thermostable and function as good emulsificant for emulsification of methyl methacrylate. The emulsion stability order in function of the oil phase was methyl methacrylate > emulsions of castor oil > emulsion n-heptane > emulsion toluene > emulsion hexadecane > octane emulsion. The data presented show that rhamnolipid extracts may be used to formulate stable emulsions of methyl methacrylate. This process can be used to do nano/microsphere of polymethyl methacrylate.