Production and stability studies of the bioemulsifier obtained from a new strain of Candida glabrata UCP 1002
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Keywords

biosurfactant
Candida
emulsifier
fermentation
glucose
vegetal oil

How to Cite

1.
Asfora Sarubbo L, Moura de Luna J, de Campos-Takaki GM. Production and stability studies of the bioemulsifier obtained from a new strain of Candida glabrata UCP 1002. Electron. J. Biotechnol. [Internet]. 2006 Jul. 15 [cited 2024 Oct. 13];9(4):0-. Available from: https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/v9n4-6

Abstract

Evaluation of both tenso-active and emulsifying activities indicated that a biosurfactant was produced by the newly isolated and promising strain Candida glabrata isolated from mangrove sediments. The extracellular water-soluble emulsifying agent was isolated and identified as a heteropolymer. The maximum of bioemulsifier production was observed when the strain was grown on soluble and insoluble substrates cotton seed oil plus glucose, reaching values of 10.0 g/l after 144 hrs at 200 rpm. The cell-free culture broth containing the examined agent lowered the surface tension of the medium to 31 mN/m. Stable and compact emulsions with emulsifying activity of 75% of cotton seed oil were detected. The emulsification capacity remained practically unaltered within a wide pH (2-12), temperature (4-80ºC) ranges and under NaCl concentrations up to 10%.

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