Accession Number : ADA267183


Title :   (FY91 AASERT) Molecular Probes and Bioluminescent Reporters in Ecological Optimization of Biodegradation


Descriptive Note : Annual rept. 1 Jun 92-31 May 93,


Corporate Author : TENNESSEE UNIV KNOXVILLE


Personal Author(s) : Sayler, G S


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a267183.pdf


Report Date : 31 May 1993


Pagination or Media Count : 3


Abstract : The goal of the research supported by this grant is to determine the role that biosurfactants and biosurfactant-producing microorganisms may play in enhancing the rate and/or extent of polycyclic aromatic hydrocarbon (PAH) biodegradation in particulate media. Biosurfactants, which are surface-active compounds produced by certain bacterial strains, have been shown to increase the apparent aqueous solubility of sparingly-soluble organic contaminants including PAHs. The biodegradation rate is often controlled by the aqueous concentration which in turn may be controlled by sorption/desorption equilibrium in particulate matrices. Biosurfactants may function as another phase for the contaminant to partition into, thereby increasing the available pool of the contaminant and, thus, its rate of degradation.


Descriptors :   *PROBES , *MOLECULAR PROPERTIES , *ECOLOGY , *BIODETERIORATION , DEGRADATION , BIOLOGY , BACTERIA , RATES , PHASE , SURFACES , ORGANIC COMPOUNDS , AROMATIC HYDROCARBONS , CONTAMINANTS , SURFACE ACTIVE SUBSTANCES , PARTICULATES , MEDIA , SOLUBILITY , LUMINESCENCE , DESORPTION , SORPTION , MICROORGANISMS


Subject Categories : Biochemistry
      Microbiology
      Organic Chemistry
      Physical Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE