Cristin-resultat-ID: 1561718
Sist endret: 1. august 2018, 09:54
NVI-rapporteringsår: 2018
Resultat
Vitenskapelig artikkel
2018

Biodegradation of n-alkanes on oil–seawater interfaces at different temperatures and microbial communities associated with the degradation

Bidragsytere:
  • Synnøve Lofthus
  • Roman Netzer
  • Anna Lewin
  • Tonje Marita Bjerkan Heggeset
  • Tone Haugen og
  • Odd Gunnar Brakstad

Tidsskrift

Biodegradation
ISSN 0923-9820
e-ISSN 1572-9729
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2018
Publisert online: 2018
Trykket: 2018
Volum: 29
Hefte: 2
Sider: 141 - 157

Importkilder

Scopus-ID: 2-s2.0-85043715915

Klassifisering

Vitenskapsdisipliner

Molekylærbiologi

Emneord

Oljeforurensning

Beskrivelse Beskrivelse

Tittel

Biodegradation of n-alkanes on oil–seawater interfaces at different temperatures and microbial communities associated with the degradation

Sammendrag

Oil biodegradation studies have mainly focused on microbial processes in dispersions, not specifically on the interfaces between the oil and the seawater in the dispersions. In this study, a hydrophobic adsorbent system, consisting of Fluortex fabrics, was used to investigate biodegradation of n-alkanes and microbial communities on oil–seawater interfaces in natural non-amended seawater. The study was performed over a temperature range from 0 to 20 °C, to determine how temperature affected biodegradation at the oil–seawater interfaces. Biodegradation of n-alkanes were influenced both by seawater temperature and chain-length. Biotransformation rates of n-alkanes decreased by reduced seawater temperature. Low rate coefficients at a seawater temperature of 0 °C were probably associated with changes in physical–chemical properties of alkanes. The primary bacterial colonization of the interfaces was predominated by the family Oceanospirillaceae at all temperatures, demonstrating the wide temperature range of these hydrocarbonoclastic bacteria. The mesophilic genus Oleibacter was predominant at the seawater temperature of 20 °C, and the psychrophilic genus Oleispira at 5 and 0 °C. Upon completion of n-alkane biotransformation, other oil-degrading and heterotrophic bacteria became abundant, including Piscirickettsiaceae (Cycloclasticus), Colwelliaceae (Colwellia), Altermonadaceae (Altermonas), and Rhodobacteraceae. This is one of a few studies that describe the biodegradation of oil, and the microbial communities associated with the degradation, directly at the oil–seawater interfaces over a large temperature interval.

Bidragsytere

Synnøve Lofthus

  • Tilknyttet:
    Forfatter
    ved Institutt for bioteknologi og matvitenskap ved Norges teknisk-naturvitenskapelige universitet
  • Tilknyttet:
    Forfatter
    ved Klima og miljø ved SINTEF Ocean

Roman Netzer

  • Tilknyttet:
    Forfatter
    ved Havbruk ved SINTEF Ocean

Anna Lewin

  • Tilknyttet:
    Forfatter
    ved Bioteknologi og nanomedisin ved SINTEF AS
Aktiv cristin-person

Tonje Marita Bjerkan Heggeset

  • Tilknyttet:
    Forfatter
    ved Bioteknologi og nanomedisin ved SINTEF AS

Tone Haugen

  • Tilknyttet:
    Forfatter
    ved Bioteknologi og nanomedisin ved SINTEF AS
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