A novel 2,3-xylenol-utilizing Pseudomonas isolate capable of degrading multiple phenolic compounds

Zijun Xiao, Fangfang Huo, Yunling Huang, Xiankun Zhu, Jian R. Lu

    Research output: Contribution to journalArticlepeer-review


    This work characterized a novel 2,3-xylenol-utilizing Pseudomonas isolate XQ23. From 16S rRNA phylogenetic analysis, XQ23 was found to be a member of the Pseudomonas putida group. Most of its physiological characteristics also shared similarities to P. putida. Phenols were catabolized by the meta-cleavage pathway. The dependence of the specific growth rate on 2,3-xylenol concentration could be well fitted by the Haldane model, with the maximum occurring at the concentration around 180mgl -1. Kinetic parameters indicated that XQ23 was sensitive to 2,3-xylenol and had low affinity. Three patterns, i.e. constant, linear decline, and allometric decline, were proposed to describe the biomass yields of phenols during bacterial degradation and XQ23 under 2,3-xylenol culturing conditions followed the allometric pattern. In a mineral-salts medium supplemented with 180mgl -1 of 2,3-xylenol as the sole carbon and energy source, over 40% of 2,3-xylenol was turned into CO 2 to provide energy by complete oxidization. © 2011 Elsevier Ltd.
    Original languageEnglish
    Pages (from-to)59-64
    Number of pages5
    JournalBioresource Technology
    Publication statusPublished - Jan 2012


    • 2,3-Xylenol
    • Biodegradation
    • Biomass yield pattern
    • Kinetics
    • Strain characterization


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