Degradation pathways of low-ethoxylated nonylphenols by isolated bacteria using an improved method
文献类型：期刊论文
| 作者 | Zhang, Yu
|
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2014 |
| 卷号 | 21期号:16页码:9468-9476 |
| 关键词 | Low-ethoxylated nonylphenol ethoxylates Degrading bacteria Biodegradation pathway Gelling reagent |
| ISSN号 | 0944-1344 |
| 中文摘要 | Nonylphenol ethoxylates (NPEOs) with low ethoxylation degree (NPav2EO; containing two ethoxy units on average) and estrogenic properties are the intermediate products of nonionic surfactant NPEOs. To better understand the environmental fate of low-ethoxylated NPEOs, phylogenetically diverse low-ethoxylated NPEO-degrading bacteria were isolated from activated sludge using gellan gum as the gelling reagent. Four isolates belonging to four genera, i.e., Pseudomonas sp. NP522b in gamma-Proteobacteria, Variovorax sp. NP427b and Ralstonia sp. NP47a in beta-Proteobacteria, and Sphingomonas sp. NP42a in alpha-Proteobacteria were acquired. Ralstonia sp. NP47a or Sphingomonas sp. NP42a, have not been reported for the degradation of low-ethoxylated NPEOs previously. The biotransformation pathways of these isolates were investigated. The first three strains (NP522b, NP427b, and NP47a) exhibited high NPav2EO oxidation ability by oxidizing the polyethoxy (EO) chain to form low-ethoxylated nonylphenoxy carboxylates, and then further oxidizing the alkyl chain to form carboxyalkylphenol polyethoxycarboxylates. Furthermore, Sphingomonas sp. NP42a degraded NPav2EO through a nonoxidative pathway with nonylphenol monoethoxylate as the dominant product. |
| WOS记录号 | WOS:000340613200005 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9520]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Yu. Degradation pathways of low-ethoxylated nonylphenols by isolated bacteria using an improved method[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2014,21(16):9468-9476. |
| APA | Zhang, Yu.(2014).Degradation pathways of low-ethoxylated nonylphenols by isolated bacteria using an improved method.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,21(16),9468-9476. |
| MLA | Zhang, Yu."Degradation pathways of low-ethoxylated nonylphenols by isolated bacteria using an improved method".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 21.16(2014):9468-9476. |
入库方式： OAI收割
来源：生态环境研究中心
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