Effect of C/N ratio and physicochemical conditions on the production of rhamnolipids by pseudomonas aeruginosa LBI
| Autor: | Lovaglio, R. B., Costa, S. G. V. A. O., Lima, C. J. B., Cortezi, M., Jonas, Contiero |
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| Přispěvatelé: | Universidade Estadual Paulista (UNESP) |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP ResearcherID |
| Popis: | Made available in DSpace on 2022-04-28T21:24:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-08-01 Waste utilization for biosurfactant production is an important approach contributing to the reduction of waste treatment costs, while increasing the economic value of residues and reducing biosurfactant production costs. In an attempt to optimize rhamnolipid production by Pseudomonas aeruginosa LBI, the effects of the oil refinery waste as carbon source, C/N ratio, agitation Speed, aeration rate, pH control and fed-batch culture conditions on the production of this biosurfactant were assessed in a bioreactor. Maximum production (16.9 g L ) was attained at a C/N ratio of 23, agitation at 800 rpm and aeration at 2.0 vvm. The rhamnolipid solution (0.1%, w/v) exhibited surface and interface tensions of 25 mN/m and 0.63 mN/m respectively. The critical micelle concentration (CMC) wds 73,9 mg L-1. The optimal parameters used in this study promoted the formation of a useful biosurfactant with potential for many industrial applications. Unesp-Univ Estadual Paulista Department of Biochemistry and Microbiology São Paulo State University, Rio Claro, Av. 24-A, 1515 Bela Vista, CEP 13506-900, Rio Claro, SP Unesp-Univ Estadual Paulista Department of Biochemistry and Microbiology São Paulo State University, Rio Claro, Av. 24-A, 1515 Bela Vista, CEP 13506-900, Rio Claro, SP |
| Databáze: | OpenAIRE |
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