A new biosurfactant produced by Candida glabrata UCP 1002: characteristics of stability and application in oil recovery

Brazilian Archives of Biology and Technology

Juliana Moura De Luna¹  Leonie Sarubbo¹  Galba Maria De Campos-takaki¹ 

关键词: Biosurfactant;    Candida glabrata;    surface tension;    stability;    cotton seed oil;    oil removal;   

DOI  :  10.1590/S1516-89132009000400001

来源: SciELO

【 摘 要 】

The production of a new biosurfactant by Candida glabrata UCP1002 was studied to evaluate the influence of the concentration of the cotton seed oil, glucose and yeast extract. The dynamics of the growth and surfactant production were showed for all the cultivation conditions studied. The best emulsification of the n-hexadecane, quantified by the emulsifying index was observed in the medium containing 7.5% cotton seed oil, 5% glucose and 0.3% yeast extract. The isolated biosurfactant showed a CMC of 2.5% and the surface tension at that point showed to be 31mN/m. The potential application of the biosurfactant in oil recovery from the sand, in acid and alkaline environments and over exposure to high salinity and different temperatures was demonstrated by the percentage of oil removal and by the stability of the surface tension, respectively.

【 授权许可】

CC BY-NC   
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