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Decontamination Activity of Ryegrass Exudates Towards Bisphenol A in the Absence and Presence of Dissolved Natural Organic Matter.
- Source :
-
International Journal of Phytoremediation . 2015, Vol. 17 Issue 1, p1-8. 8p. 1 Chart, 5 Graphs. - Publication Year :
- 2015
-
Abstract
- Bisphenol A (BPA) is an endocrine disruptor compound widespread in terrestrial and aquatic systems of urbanized and industrialized regions. This study evaluated the capacity of ryegrass(Lolium perenne)aqueous exudates to degrade BPA at a concentration of 10 mg L−1both in the absence and in the presence of an organic fraction often coexisting with plant exudates, i.e., natural organic matter (NOM), tested at a concentration of 20 mg L−1. In exudates alone, BPA degradation ceased after one day from the product addition when residual BPA resulted 65% of the initial BPA, whereas in exudates with the addition of NOM the degradation process continued for 4 days when residual BPA resulted 49%. Measurements of peroxidase and laccase activities in exudates suggested a significant involvement of these enzymes in BPA degradation. This finding was further confirmed by the almost complete absence of BPA degradation in aqueous exudates strongly acidified. In some BPA-contaminated exudates, chromatographic analysis revealed the presence of a newly formed compound identified as a BPA oxidation product by Fourier transform - ion cyclotron resonance mass spectrometry analysis. In conclusion, ryegrass exudates possess a relevant decontamination capacity towards BPA which persists and appears to be enhanced by the addition of NOM. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 15226514
- Volume :
- 17
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- International Journal of Phytoremediation
- Publication Type :
- Academic Journal
- Accession number :
- 97655661
- Full Text :
- https://doi.org/10.1080/15226514.2013.828011