Document Detail

Taxonomic identification and use of free and entrapped cells of a new Mycobacterium sp., strain Spyr1 for degradation of polycyclic aromatic hydrocarbons (PAHs).
MedLine Citation:
PMID:  19096938     Owner:  NLM     Status:  MEDLINE    
A polycyclic aromatic hydrocarbon (PAH)-degrading bacterial strain Spyr1 was isolated from Greek creosote polluted soil by an enrichment method using pyrene as sole carbon and energy source. Spyr1 was identified as Mycobacterium sp. based on 16S rDNA analysis and it was capable of degrading pyrene, fluoranthene, fluorene, anthracene, and acenaphthene. The effect of entrapment in glass beads and alginate/starch mixtures on the survival and pyrene degradation ability of Spyr1 cells in liquid suspensions and soil microcosms was tested and compared with that of freely suspended cells. In general, free cells showed higher degradation of pyrene and other PAH than immobilized cells. However, immobilized cells could better tolerate PAH and they maintained their viability and PAH degradation capability for at least 1 year after storage at 4 degrees C. Entrapped cells in glass beads exhibited better pyrene biodegradation performance than alginate/starch entrapped cells in liquid suspensions and could be used effectively for at least ten repeated cycles. Alginate/starch entrapped cells exhibited better yields than glass beads entrapped cells for removing pyrene as well as mixtures of PAH in soil microcosms.
E Karabika; A Kallimanis; A Dados; G Pilidis; C Drainas; A I Koukkou
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-12-19
Journal Detail:
Title:  Applied biochemistry and biotechnology     Volume:  159     ISSN:  1559-0291     ISO Abbreviation:  Appl. Biochem. Biotechnol.     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-09-03     Completed Date:  2009-11-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8208561     Medline TA:  Appl Biochem Biotechnol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  155-67     Citation Subset:  IM    
Sector of Organic Chemistry and Biochemistry, Department of Chemistry, University of Ioannina, Ioannina, Greece.
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MeSH Terms
Biodegradation, Environmental
Cells, Immobilized
Mycobacterium / classification*,  isolation & purification,  metabolism*
Polycyclic Hydrocarbons, Aromatic / metabolism*
Soil Microbiology*
Species Specificity
Reg. No./Substance:
0/Polycyclic Hydrocarbons, Aromatic

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