Abstract
This work describes experimental results carried out on the fermentation of Candida lipolytica, which produced a new biosurfactant when grown on a vegetable oil refinery residue as substrate. The cell-free culture broth containing the biosurfactant formed stable emulsions with hydrophobic natural compounds. Emulsification properties of the biosurfactant were not affected by salinity; however, treatment at a higher temperature decreased the emulsification activity, indicating applications in oil recovery. The isolated biosurfactant corresponds to a yield of 4.5 g/l, and the surface tension of water was reduced from 71 to 32 mN/m. Preliminary chemical characterizations showed that the biosurfactant consisted of protein (50%), lipid (20%), and carbohydrate (8%).
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This work was carried out with the financial support of FINEP/CTPETRO, FACEPE, and CNPq.
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Rufino, R.D., Sarubbo, L.A. & Campos-Takaki, G.M. Enhancement of stability of biosurfactant produced by Candida lipolytica using industrial residue as substrate. World J Microbiol Biotechnol 23, 729–734 (2007). https://doi.org/10.1007/s11274-006-9278-2
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DOI: https://doi.org/10.1007/s11274-006-9278-2