Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Isolation and Characterization of Psychrotrophic and Halotolerant Rhodococcus sp. YHLT-2

  • Ryu Hee-Wook (Department of Environmental and Chemical Engineering, Soongsil University) ;
  • Joo Yang-Hee (Department of Environmental Science and Engineering, Ewha Woman's University) ;
  • An Youn-Joo (Department of Environmental Science, Konkuk University) ;
  • Cho Kyung-Suk (Department of Environmental Science and Engineering, Ewha Woman's University)
  • Published : 2006.04.01
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Abstract

A psychrotrophic bacterium was isolated from oil-contaminated groundwater and identified as Rhodococcus sp. YHLT-2. Growth was observed at the temperature of 4 to $30^{\circ}C$. This strain degraded various petroleum hydrocarbons such as crude oil, diesel oil, and gasoline over the whole range of temperatures tested. The Rhodococcus sp. YHLT-2 was capable of growing even at $4^{\circ}C$, exhibiting 90% of oil biodegradation after 20 days. Degradation of crude oil occurred at low temperature in nature. This strain was also able to grow at 7% NaCl, and utilized not only short chain alkenes $(C_9\;to\;C_{12})$, but also a broad range of long chain alkenes $(C_{19}\;to\;C_{32})$ present in crude oil at $4^{\circ}C$. The Rhodococcus sp. YHLT-2 is expected to be of potential use in the in situ bioremediation of hazardous hydrocarbons under low-temperature and high-salt conditions.

Keywords

References

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