Document Detail


Aerobic biodegradation of propylene glycol by soil bacteria.
MedLine Citation:
PMID:  23187798     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Propylene glycol (PG) is a main component of aircraft deicing fluids and its extensive use in Northern airports is a source of soil and groundwater contamination. Bacterial consortia able to grow on PG as sole carbon and energy source were selected from soil samples taken along the runways of Oslo Airport Gardermoen site (Norway). DGGE analysis of enrichment cultures showed that PG-degrading populations were mainly composed by Pseudomonas species, although Bacteroidetes were found, as well. Nineteen bacterial strains, able to grow on PG as sole carbon and energy source, were isolated and identified as different Pseudomonas species. Maximum specific growth rate of mixed cultures in the absence of nutrient limitation was 0.014 h(-1) at 4 °C. Substrate C:N:P molar ratios calculated on the basis of measured growth yields are in good agreement with the suggested values for biostimulation reported in literature. Therefore, the addition of nutrients is suggested as a suitable technique to sustain PG aerobic degradation at the maximum rate by autochthonous microorganisms of unsaturated soil profile.
Authors:
Giuseppe Toscano; Lucia Cavalca; M Letizia Colarieti; Rosalia Scelza; Riccardo Scotti; Maria A Rao; Vincenza Andreoni; Sonia Ciccazzo; Guido Greco
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-28
Journal Detail:
Title:  Biodegradation     Volume:  -     ISSN:  1572-9729     ISO Abbreviation:  Biodegradation     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9100834     Medline TA:  Biodegradation     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
DIC, Università degli Studi di Napoli Federico II, Naples, Italy, giuseppe.toscano@unina.it.
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