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Nguyen QA, Vu HP, McDonald JA, Nguyen LN, Leusch FDL, Neale PA, Khan SJ, Nghiem LD. Chiral Inversion of 2-Arylpropionic Acid Enantiomers under Anaerobic Conditions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:8197-8208. [PMID: 35675163 DOI: 10.1021/acs.est.2c01602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This work examined the chiral inversion of 2-arylpropionic acids (2-APAs) under anaerobic conditions and the associated microbial community. The anaerobic condition was simulated by two identical anaerobic digesters. Each digester was fed with the substrate containing 11 either pure (R)- or pure (S)-2-APA enantiomers. Chiral inversion was evidenced by the concentration increase of the other enantiomer in the digestate and the changes in the enantiomeric fraction between the two enantiomers. Both digesters showed similar and poor removal of 2-APAs (≤30%, except for naproxen) and diverse chiral inversion behaviors under anaerobic conditions. Four compounds exhibited (S → R) unidirectional inversion [flurbiprofen, ketoprofen, naproxen, and 2-(4-tert-butylphenyl)propionic acid], and the remaining seven compounds showed bidirectional inversion. Several aerobic and facultative anaerobic bacterial genera (Candidatus Microthrix, Rhodococcus, Mycobacterium, Gordonia, and Sphingobium) were identified in both digesters and predicted to harbor the 2-arylpropionyl-CoA epimerase (enzyme involved in chiral inversion) encoding gene. These genera presented at low abundances, <0.5% in the digester dosed with (R)-2-APAs and <0.2% in the digester dosed with (S)-2-APAs. The low abundances of these genera explain the limited extent of chiral inversion observed in this study.
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Affiliation(s)
- Quynh Anh Nguyen
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo 2007, New South Wales, Australia
| | - Hang P Vu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo 2007, New South Wales, Australia
| | - James A McDonald
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Luong N Nguyen
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo 2007, New South Wales, Australia
| | - Frederic D L Leusch
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, Queensland 4222, Australia
| | - Peta A Neale
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, Queensland 4222, Australia
| | - Stuart J Khan
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Long D Nghiem
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo 2007, New South Wales, Australia
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Lu Q, Yu L, Liang Z, Yan Q, He Z, Luan T, Liang D, Wang S. Dehalococcoides as a Potential Biomarker Evidence for Uncharacterized Organohalides in Environmental Samples. Front Microbiol 2017; 8:1677. [PMID: 28919889 PMCID: PMC5585146 DOI: 10.3389/fmicb.2017.01677] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 08/18/2017] [Indexed: 12/24/2022] Open
Abstract
The massive production and improper disposal of organohalides resulted in worldwide contamination in soil and water. However, their environmental survey based on chromatographic methods was hindered by challenges in testing the extremely wide variety of organohalides. Dehalococcoides as obligate organohalide-respiring bacteria exclusively use organohalides as electron acceptors to support their growth, of which the presence could be coupled with organohalides and, therefore, could be employed as a biomarker of the organohalide pollution. In this study, Dehalococcoides was screened in various samples of bioreactors and subsurface environments, showing the wide distribution of Dehalococcoides in sludge and sediment. Further laboratory cultivation confirmed the dechlorination activities of those Dehalococcoides. Among those samples, Dehalococcoides accounting for 1.8% of the total microbial community was found in an anaerobic granular sludge sample collected from a full-scale bioreactor treating petroleum wastewater. Experimental evidence suggested that the influent wastewater in the bioreactor contained bromomethane which support the growth of Dehalococcoides. This study demonstrated that Dehalococcoides could be employed as a promising biomarker to test the present of organohalides in wastestreams or other environmental samples.
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Affiliation(s)
- Qihong Lu
- Environmental Microbiome Research Center and the School of Environmental Science and Engineering, Sun Yat-sen UniversityGuangzhou, China
| | - Ling Yu
- Environmental Microbiome Research Center and the School of Environmental Science and Engineering, Sun Yat-sen UniversityGuangzhou, China
| | - Zhiwei Liang
- Environmental Microbiome Research Center and the School of Environmental Science and Engineering, Sun Yat-sen UniversityGuangzhou, China
| | - Qingyun Yan
- Environmental Microbiome Research Center and the School of Environmental Science and Engineering, Sun Yat-sen UniversityGuangzhou, China
| | - Zhili He
- Environmental Microbiome Research Center and the School of Environmental Science and Engineering, Sun Yat-sen UniversityGuangzhou, China
| | - Tiangang Luan
- State Key Laboratory of Pest Control and Resource Utilization, School of Life Sciences, Sun Yat-sen UniversityGuangzhou, China
| | - Dawei Liang
- Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang UniversityBeijing, China
| | - Shanquan Wang
- Environmental Microbiome Research Center and the School of Environmental Science and Engineering, Sun Yat-sen UniversityGuangzhou, China.,Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation TechnologyGuangzhou, China
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McNamara P, Krzmarzick M. Introductory Editorial: Water Microbiology. Microbiol Insights 2015; 8:33-5. [PMID: 27103820 PMCID: PMC4836622 DOI: 10.4137/mbi.s39866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Patrick McNamara
- Assistant Professor, Civil, Construction, and Environmental Engineering, Marquette University, Milwaukee, WI, USA
| | - Mark Krzmarzick
- Assistant Professor, Civil and Environmental Engineering, Oklahoma State University, Stillwater, OK, USA
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