Kinetics of phenol oxidation by Candida tropicalis: effects of oxygen supply rate and nutrients on phenol inhibition
Language English Country United States Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
12630323
DOI
10.1007/bf02818675
Knihovny.cz E-resources
- MeSH
- Biodegradation, Environmental MeSH
- Bioreactors MeSH
- Candida tropicalis metabolism MeSH
- Water Pollutants, Chemical metabolism MeSH
- Phenol metabolism MeSH
- Kinetics MeSH
- Oxygen metabolism MeSH
- Least-Squares Analysis MeSH
- Oxidation-Reduction MeSH
- Oxygen Consumption MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Water Pollutants, Chemical MeSH
- Phenol MeSH
- Oxygen MeSH
The kinetics of phenol degradation was estimated in a fed-batch reactor system. Effects of oxygen and nutrient excess or limitation as well as the presence of several essential ions on the phenol- and oxygen-specific uptake rates achieved simultaneously in a bioreactor were shown. Candida tropicalis was grown on phenol as the only carbon and energy source. Applying the best fit of polynomial function, the maximum specific uptake rates of phenol and oxygen, the critical concentrations of phenol, the half-saturation constants and inhibition constants were determined. Linear relationship between specific phenol uptake rate and the exogenous respiration rate was found regardless of the kind and presence of essential nutrients. At oxygen limitation both the phenol uptake rate and the cell affinity to phenol decreased more strongly compared with those under nutrient limitation. Oxygen in excess resulted in a significant increase of cell tolerance toward phenol. The presence of essential nutrients increased the specific phenol degradation rate and led to complete phenol oxidation.
See more in PubMed
Folia Microbiol (Praha). 2001;46(3):205-9 PubMed
Biotechnol Prog. 1998 Nov-Dec;14(6):966-9 PubMed
Antonie Van Leeuwenhoek. 1990 Jan;57(1):29-32 PubMed
Arch Microbiol. 1994;162(1-2):57-62 PubMed
Appl Environ Microbiol. 1991 Apr;57(4):1213-7 PubMed
Biotechnol Bioeng. 1998 Dec 5;60(5):560-7 PubMed
Folia Microbiol (Praha). 2001;46(4):297-302 PubMed
Folia Microbiol (Praha). 2002;47(3):273-7 PubMed
Biotechnol Bioeng. 1987 Mar;29(4):464-8 PubMed
Biotechnol Bioeng. 1987 Aug 20;30(3):398-412 PubMed
Antonie Van Leeuwenhoek. 1990 Jan;57(1):33-6 PubMed
Folia Microbiol (Praha). 2001;46(3):211-6 PubMed
Biochem Biophys Res Commun. 1987 Jul 15;146(1):41-6 PubMed
Biotechnol Bioeng. 1975 Aug;17(8):1211-35 PubMed
Appl Microbiol Biotechnol. 1997 Jul;48(1):18-22 PubMed
Appl Microbiol Biotechnol. 2000 Aug;54(2):168-72 PubMed
J Basic Microbiol. 1985;25(2):103-10 PubMed
Biotechnol Bioeng. 1987 Sep;30(4):498-504 PubMed
Biotechnol Bioeng. 1998 Nov 5;60(3):391-5 PubMed
Appl Environ Microbiol. 1990 May;56(5):1279-85 PubMed
Continuous aerobic phenol degradation by defined mixed immobilized culture in packed bed reactors