New bioemulsifiers produced by Candida lipolytica using D-glucose and babassu oil as carbon sources
| Autor: | Vance-Harrop,Mabel H., Gusmão,Norma B. de, Campos-Takaki,Galba Maria de |
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| Jazyk: | angličtina |
| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Brazilian Journal of Microbiology, Vol 34, Iss 2, Pp 120-123 (2003) Brazilian Journal of Microbiology v.34 n.2 2003 Brazilian Journal of Microbiology Sociedade Brasileira de Microbiologia (SBM) instacron:SBM |
| ISSN: | 1678-4405 1517-8382 |
| Popis: | Candida lipolytica IA 1055 produced extracellular biosurfactants with emulsification activity by fermentation using babassu oil and D-glucose as carbon sources. Natural seawater diluted at 50% supplemented with urea, ammonium sulfate, and phosphate was used as economic basal medium. The best results were achieved with the YSW-B2 medium, which contained urea, ammonium sulfate, and babassu oil and with YSW-B3 medium, which contained urea, ammonium sulfate, phosphate, and babassu oil, kept under fed batch fermentation for 60 hours with 5% of babassu oil. For the two media, the maximum specific growth rates were 0.02 h-1 and 0.04 h-1; the generation times were 34.6 h-1 and 17.3 h-1, and the emulsification activities were 0.666 and 0.158 units, respectively. The molecules of these new bioemulsifiers were contituted of carbohydrates, proteins and lipids. |
| Databáze: | OpenAIRE |
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