@article{ijebb2015321,
author={{Ite, Aniefiok E. and Hanney, Nicola F. and Semple, Kirk T.},
title={The Effect of Hydroxycinnamic Acids on the Microbial Mineralisation of Phenanthrene in Soil},
journal={International Journal of Environmental Bioremediation & Biodegradation},
volume={3},
number={2},
pages={40--47},
year={2015},
url={http://pubs.sciepub.com/ijebb/3/2/1},
issn={2333-8636},
abstract={The effect of hydroxycinnamic acids (caffeic, ferulic and <i>p</i>-coumaric acids) on the microbial mineralisation of phenanthrene in soil slurry by the indigenous microbial community has been investigated. The rate and extent of <SUP>14</SUP>C每phenanthrenemineralisation in artificially spiked soils were monitored in the absence of hydroxycinnamic acids and presence of hydroxycinnamic acids applied at three different concentrations (50, 100 and 200 米g kg<SUP>-1</SUP>) either as single compounds or as a mixture of hydroxycinnamic acids (caffeic, ferulic and <i>p</i>-coumaric acids at a 1:1:1 ratio). The highest extent of <SUP>14</SUP>C每phenanthrene mineralisation (<i>P</i>&lt; 0.001) was obtained in soils amended with 50 米g kg<SUP>-1</SUP> ferulic acid (52.9% ㊣ 0.45) compared to that obtained in unamended soils (37.2% ㊣ 0.23). In addition, mineralisation of <SUP>14</SUP>C每phenanthrene was monitored in pre每incubated artificially spiked soils at various time intervals (0, 16, 32 and 48 d) following amendment with hydroxycinnamic acids at a concentration of 100 米g kg<SUP>-1</SUP>. After 16 d of pre-exposure, artificially spiked soils amended with 100 米g kg<SUP>-1</SUP> ferulic acids had the highest extents of <SUP>14</SUP>C每phenanthrene mineralisationcompared to those obtained soils with other treatment conditions. The results obtained showed enhanced mineralisation of <SUP>14</SUP>C每phenanthrene in freshly spiked soils amended with hydroxycinnamic acids and the extents of <SUP>14</SUP>C每phenanthrene mineralisation range in the order of 50 ≡ 100 > 200 米g kg<SUP>-1</SUP>. Depending on its concentrationin soil, hydroxycinnamic acids can either stimulate or inhibit mineralisation of phenanthrene by indigenous soil microbial community. Therefore, effective understanding of phytochemical每microbe每organic contaminant interactions is essential for further development of phytotechnologies for remediation of PAH每contaminated soils.},
doi={10.12691/ijebb-3-2-1}
publisher={Science and Education Publishing}
}