Earthy odor compounds production and loss in three cyanobacterial cultures
文献类型：期刊论文
| 作者 | Li, Zonglai ; Hobson, Peter ; An, Wei ; Burch, Michael D. ; House, Jenny ; Yang, Min |
| 刊名 | Engineering; Environmental Sciences & Ecology; Water Resources
 |
| 出版日期 | 2012 |
| 卷号 | 46期号:16页码:5165-5173 |
| 关键词 | Cyanobacteria Odor compounds Geosmin 2-Methylisoborneol Biodegradation Volatilization |
| ISSN号 | 0043-1354 |
| 中文摘要 | Geosmin and 2-methylisoborneol (MIB) related odor events caused by cyanobacteria have been a very common problem to water supply. This paper investigated the effects of temperature (18 and 25 degrees C) and light intensity (10 and 100 [anal photons m(-2) s(-1)) on the production behaviors of earthy odor compounds by three odorous cyanobacteria, i.e., the geosmin-producing planktonic Anabaena circinalis (Ana 318), geosmin-producing benthic Phormidium amoenum (Pho 012) and MIB-producing benthic Phormidium sp. (Pho 689). At the same time, the effects of biodegradation and volatilization on the fates of the released odor compounds in water were also evaluated. The combination of high temperature (25 degrees C) and light intensity (100 mu mol photons m(-2) s(-1)) favored the growth of the three cyanobacteria and the production of chl-a and odor compounds. However, higher chl-a and odor yields (average odor compounds per cell) were achieved for the two benthic cyanobacteria at the temperature of 18 degrees C. Most of geosmin was included within the cells for Ana 318 (95-99%) and Pho 012 (85-60%), while only 20-40% MIB was bound to the cells for Pho 689. The half-life times of MIB and geosmin due to volatilization varied between 18.8 and 35.4 days, while 8 out of 10 samples exhibited a half-life time (t(1/2)) for geosmin biodegradation shorter than 1 day (0.38-15.0 h), showing that biodegradation could affect the fate of geosmin significantly in aquatic environments. In comparison, biodegradation of MIB. was much slower (tin: 122-2166 h). Denaturing gradient gel electrophoresis (DGGE) analysis showed that Pseudomonas- and Sphingomonas-like bacteria coexisted with cyanobacteria in the cultures, and may have played an important role in geosmin/MIB biodegradation. The result of this study will be helpful for better understanding and managing the earthy odor problems caused by cyanobacteria in water supply. (C) 2012 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000309095800025 |
| 公开日期 | 2014-11-28 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/8128]  |
| 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 | Li, Zonglai,Hobson, Peter,An, Wei,et al. Earthy odor compounds production and loss in three cyanobacterial cultures[J]. Engineering; Environmental Sciences & Ecology; Water Resources,2012,46(16):5165-5173. |
| APA | Li, Zonglai,Hobson, Peter,An, Wei,Burch, Michael D.,House, Jenny,&Yang, Min.(2012).Earthy odor compounds production and loss in three cyanobacterial cultures.Engineering; Environmental Sciences & Ecology; Water Resources,46(16),5165-5173. |
| MLA | Li, Zonglai,et al."Earthy odor compounds production and loss in three cyanobacterial cultures".Engineering; Environmental Sciences & Ecology; Water Resources 46.16(2012):5165-5173. |
入库方式： OAI收割
来源：生态环境研究中心
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