Decontamination Activity of Ryegrass Exudates Towards Bisphenol A in the Absence and Presence of Dissolved Natural Organic Matter
Decontamination Activity of Ryegrass Exudates Towards Bisphenol A in the Absence and Presence of Dissolved Natural Organic Matter
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在存在和不存在溶解的天然有机物的情况下黑麦草分泌物对双酚 A 的去污活性
DOI：
10.1080/15226514.2013.828011
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发表时间：
2015
影响因子：
3.7
通讯作者：
Loffredo E
中科院分区：
文献类型：
--
作者：
Gattullo CE;Kiersch K;Eckhardt K-U;Baum C;Leinweber P;Loffredo E
双酚A（BPA）是一种内分泌干扰物，广泛存在于城市化和工业化地区的陆地和水生系统中。这项研究评估了在不存在和存在通常与植物分泌物共存的有机组分的情况下，黑麦草（Lolium perenne）水性分泌物降解浓度为10 mg L− 1的BPA的能力，即，天然有机物（NOM），测试浓度为20 mg L−1。在单独的渗出液中，BPA降解在产品添加后一天停止，此时残留BPA为初始BPA的65%，而在添加NOM的渗出液中，降解过程持续4天，此时残留BPA为49%。分泌物中的过氧化物酶和漆酶活性的测量表明，BPA降解这些酶的显着参与。这一发现进一步证实了强酸化的水性渗出物中几乎完全没有BPA降解。在一些BPA污染的渗出液中，色谱分析显示存在一种新形成的化合物，通过傅立叶变换-离子回旋共振质谱分析鉴定为BPA氧化产物。总之，黑麦草分泌物具有相关的去污能力，对BPA的持续存在，似乎是通过增加NOM增强。
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.
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影响因子：
2.8
作者：
Imai, Sofue;Shiraishi, Atsuhiko;Hirata, Kazumasa
通讯作者：
Hirata, Kazumasa
影响因子：
9.8
作者：
Gattullo, C. Eliana;Baehrs, Hanno;Loffredo, Elisabetta
通讯作者：
Loffredo, Elisabetta
影响因子：
11.4
作者：
Huang, QG;Weber, WJ
通讯作者：
Weber, WJ
影响因子：
8.8
作者：
Loffredo, Elisabetta;Gattullo, C. Eliana;Senesi, Nicola
通讯作者：
Senesi, Nicola
影响因子：
4.1
作者：
Kwak, HI;Bae, MO;Cho, MH
通讯作者：
Cho, MH