| Title | Characteristics of Several Bacterial Isolates Capable of Degrading Chloroaliphatic Compounds via Hydrolytic Dechlorination |
|---|---|
| Author | Ji-Sook Song 1 , Dong-Hun Lee 1 , Kyoung Lee 2 , and Chi-Kyung Kim 1 , * |
| Address | 1 Department of Microbiology and Biotechnology Research Institute, Chungbuk National University, Cheongju 361-763, Korea; 2 Department of Microbiology, Changwon National University, Changwon 641-773, Korea |
| Bibliography | Journal of Microbiology, 41(4),277-283, 2003, |
| DOI | |
| Key Words | Haloaliphatic hydrocarbons, hydrolytic dechlorination, Xanthobacter flavus, Ralstonia eutropha |
| Abstract | Haloaliphatic hydrocarbons have been widely used as solvents and ingredients of pesticides and herbicides. However, when these compounds contaminate the environment, they can be very hazardous to animals and humans because of their potential toxicity and carcinogenicity. Therefore, lots of studies have been made for microbial degradation of those pollutant chemicals. In this study, 11 bacterial strains capable of degrading 1,2-dichloroethane (1,2-DCA), 2-chloropropionic acid (2-CPA), 2,3-dichloropropionic acid (2,3-DCPA), and 2-monochloroacetic acid (2-MCA) by hydrolytic dechlorination under aerobic conditions were isolated from wastewaters and rice paddy soil samples. Their morphological and biochemical characteristics and their degradation capabilities of haloaliphatic hydrocarbons were examined. On the basis of the 16S rDNA sequences, 8 different kinds of microbial species, including Pseudomonas plecoglossicida, Xanthobacter flavus, Ralstonia eutropha, were identified. All of the isolated strains can degrade MCA. In particular, strains UE-2 and UE-15 degraded 1,2-DCA, and strain CA-11 degraded 2,3-DCPA, which are hardly degraded by other strains. |
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