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Influence of peanut oil on microbial degradation of polycyclic aromatic hydrocarbons

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Peanut oil amendment (0.1%–0.2% (v/v)) increased the biodegradation of various polycyclic aromatic hydrocarbons (PAHs) by 15%–80% with a mixed bacterial culture and a pure culture of Comamonas testosteroni in aqueous media and in PAH-contaminated weathered soil slurry systems. The stimulatory effect on biodegradation was more pronounced with the high molecular weight PAHs (e.g., >3 rings). The presence of peanut oil also accelerated the biodegradation of PAHs sorbed onto activated carbon, indicating its potential application in the bioregeneration of activated carbon.Key words: polycyclic aromatic hydrocarbons, microorganisms, peanut oil, biodegradation.

Un ajout d'huile d'arachide (0,1 % – 0,2 % (v/v)) a augmenté la biodégradation de divers hydrocarbures aromatiques polycycliques (HAP) de 15 % – 80 % par une culture bactérienne mixte et une culture pure de Comamonas testosteroni dans un milieu aqueux et des systèmes de boues provenant de sols altérés et contaminés aux HAP. L'effet de stimulation de la biodégradation fut davantage prononcé avec des HAP de poids moléculaires élevés (p. ex. >3 cycles). La présence d'huile d'arachide a accéléré la biodégradation des HAP retenus sur du charbon actif, ce qui signale une application possible pour la biorégénération du charbon actif.Mots clés : hydrocarbures aromatiques polycycliques, micro-organismes, huile d'arachide, biodégradation.[Traduit par la Rédaction]

Document Type: Research Article

Publication date: 2003-08-01

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  • Published since 1954, this monthly journal contains new research in the field of microbiology including applied microbiology and biotechnology; microbial structure and function; fungi and other eucaryotic protists; infection and immunity; microbial ecology; physiology, metabolism and enzymology; and virology, genetics, and molecular biology. It also publishes review articles and notes on an occasional basis, contributed by recognized scientists worldwide.
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