Identification and kinetic characteristics of an indigenous diesel-degrading Gordonia alkanivorans strain

Chiu Chung Young, Ta Chen Lin, Mao Song Yeh, Fo Ting Shen, Jo Shu Chang

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

An indigenous strain Gordonia alkanivorans CC-JG39 was isolated from oil-contaminated sludge of a local gas station located in central Taiwan. The bacterial isolate was able to grow on diesel-containing Bushnell-Haas medium and also tolerate various chemical additives frequently used in petroleum products (e.g. BETX, methyl-tert-butyl ether, and naphthalene). Kinetics of diesel-limited cell growth and biodegradation of diesel followed a Monod-type model. The kinetic constants for cell growth (μmax and K S,G) were 0.158 h-1 and 3196 mg/l, respectively, while those for biodegradation of diesel (v max, diesel and K S,D) were 3.59 mg/h/mg cell and 2874 mg/l, respectively. G. alkanivorans CC-JG39 produced extracellular surface-active material, leading to a low surface tension of nearly 33 mN/m. The CC-JG39 strain also possessed the ability to float towards the oil/water interface. These features might play some roles in enhancing the mass transfer efficiency between oil substrate and the bacterial cells. Therefore, G. alkanivorans CC-JG39 may have potential applications in bioremediation of oil pollution sites.

Original languageEnglish
Pages (from-to)1409-1414
Number of pages6
JournalWorld Journal of Microbiology and Biotechnology
Volume21
Issue number8-9
DOIs
Publication statusPublished - 2005 Dec

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Physiology
  • Applied Microbiology and Biotechnology

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