Mineralization of 4-fluorocinnamic acid by a Rhodococcus strain
Abstract A bacterial strain capable of aerobic degradation of 4-fluorocinnamic acid (4-FCA) as the sole source of carbon and energy was isolated from a biofilm reactor operating for the treatment of 2-fluorophenol. The organism, designated as strain S2, was identified by 16S rRNA gene analysis as a member of the genus Rhodococcus. Strain S2 was able to mineralize 4-FCA as sole carbon and energy source. In the presence of a conventional carbon source (sodium acetate [SA]), growth rate of strain S2 was enhanced from 0.04 to 0.14 $ h^{−1} $ when the culture medium was fed with 0.5 mM of 4-FCA, and the time for complete removal of 4-FCA decreased from 216 to 50 h. When grown in SA-supplemented medium, 4-FCA concentrations up to 1 mM did not affect the length of the lag phase, and for 4-FCA concentrations up to 3 mM, strain S2 was able to completely remove the target fluorinated compound. 4-Fluorobenzoate (4-FBA) was transiently formed in the culture medium, reaching concentrations up to 1.7 mM when the cultures were supplemented with 3.5 mM of 4-FCA. Trans,trans-muconate was also transiently formed as a metabolic intermediate. Compounds with molecular mass compatible with 3-carboxymuconate and 3-oxoadipate were also detected in the culture medium. Strain S2 was able to mineralize a range of other haloorganic compounds, including 2-fluorophenol, to which the biofilm reactor had been exposed. To our knowledge, this is the first time that mineralization of 4-FCA as the sole carbon source by a single bacterial culture is reported..
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E-Artikel |
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Erscheinungsjahr: |
2013 |
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Erschienen: |
2013 |
Enthalten in: |
Zur Gesamtaufnahme - volume:98 |
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Enthalten in: |
Applied microbiology and biotechnology - 98(2013), 4 vom: 15. Aug., Seite 1893-1905 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Amorim, Catarina L. [VerfasserIn] |
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Links: |
Volltext [lizenzpflichtig] |
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Anmerkungen: |
© Springer-Verlag Berlin Heidelberg 2013 |
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doi: |
10.1007/s00253-013-5149-6 |
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funding: |
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PPN (Katalog-ID): |
SPR002996936 |
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520 | |a Abstract A bacterial strain capable of aerobic degradation of 4-fluorocinnamic acid (4-FCA) as the sole source of carbon and energy was isolated from a biofilm reactor operating for the treatment of 2-fluorophenol. The organism, designated as strain S2, was identified by 16S rRNA gene analysis as a member of the genus Rhodococcus. Strain S2 was able to mineralize 4-FCA as sole carbon and energy source. In the presence of a conventional carbon source (sodium acetate [SA]), growth rate of strain S2 was enhanced from 0.04 to 0.14 $ h^{−1} $ when the culture medium was fed with 0.5 mM of 4-FCA, and the time for complete removal of 4-FCA decreased from 216 to 50 h. When grown in SA-supplemented medium, 4-FCA concentrations up to 1 mM did not affect the length of the lag phase, and for 4-FCA concentrations up to 3 mM, strain S2 was able to completely remove the target fluorinated compound. 4-Fluorobenzoate (4-FBA) was transiently formed in the culture medium, reaching concentrations up to 1.7 mM when the cultures were supplemented with 3.5 mM of 4-FCA. Trans,trans-muconate was also transiently formed as a metabolic intermediate. Compounds with molecular mass compatible with 3-carboxymuconate and 3-oxoadipate were also detected in the culture medium. Strain S2 was able to mineralize a range of other haloorganic compounds, including 2-fluorophenol, to which the biofilm reactor had been exposed. To our knowledge, this is the first time that mineralization of 4-FCA as the sole carbon source by a single bacterial culture is reported. | ||
650 | 4 | |a 4-Fluorocinnamic acid |7 (dpeaa)DE-He213 | |
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650 | 4 | |a Biodegradation |7 (dpeaa)DE-He213 | |
650 | 4 | |a Metabolism |7 (dpeaa)DE-He213 | |
700 | 1 | |a Ferreira, António C. S. |4 aut | |
700 | 1 | |a Carvalho, Maria F. |4 aut | |
700 | 1 | |a Afonso, Carlos M. M. |4 aut | |
700 | 1 | |a Castro, Paula M. L. |4 aut | |
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