PMID: 9439001Jan 24, 1998Paper

Degradation of nonionic surfactants and polychlorinated biphenyls by recombinant field application vectors

Journal of Industrial Microbiology & Biotechnology
C A LajoieG S Sayler

Abstract

Degradation of polychlorinated biphenyls (PCBs) in the environment is limited by their aqueous solubility and the degradative competence of indigenous populations. Field application vectors (FAVs) have been developed in which surfactants are used to both increase the solubility of the PCBs and support the growth of surfactant-degrading strains engineered for PCB degradation. Surfactant and PCB degradation by two recombinant strains were investigated. Pseudomonas putida IPL5 utilizes both alkylethoxylate [polyoxyethylene 10 lauryl ether (POL)] and alkylphenolethoxylate [Igepal CO-720 (IGP)] surfactants as growth substrates, but only degrades the ethoxylate moiety. The resulting degradation products from the alkyl- and alkylphenolethoxylate surfactants were 2-(dodecyloxy)ethanol and nonylphenoldiethoxylates, respectively. Ralstonia eutropha B30P4 grows on alkylethoxylate surfactants without the appearance of solvent-extractable degradation products. It also degrades the 2-(dodecyloxy)ethanol produced by strain IPL5 from the alkylethoxylate surfactants. The extent of degradation of the alkylethoxylate surfactant (POL) was greater for strain IPL5 (90%) than for B30P4 (60%) as determined by the cobaltothiocyanate active substances m...Continue Reading

Citations

Jan 22, 2009·Applied Biochemistry and Biotechnology·Ang LiFang Ma
Mar 1, 2002·Journal of Microbiological Methods·Desouky Abd-El-HaleemGary S Sayler
Jun 12, 2002·Current Opinion in Microbiology·Wolf Rainer AbrahamKenneth N Timmis
Jan 18, 2006·Biotechnology Advances·Francisco P ChávezCarlos A Jerez
Jun 22, 1999·Ecotoxicology and Environmental Safety·A C LaytonG S Sayler
Jun 16, 2004·Current Opinion in Microbiology·Andrew C SingerMark J Bailey
Dec 3, 1998·Applied and Environmental Microbiology·A C LaytonG S Sayler

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