Aerobic Degradation Characteristics and Mechanism of Decabromodiphenyl Ether (BDE-209) Using Complex Bacteria Communities
Abstract
:1. Introduction
2. Materials and Methods
2.1. Chemicals and Reagents
2.2. Microorganisms and Culture Medium
2.3. Preparation of Bacterial Suspension
2.4. BDE-209 Biodegradation Experiments
2.5. Optimization of Degradation Conditions
2.6. Biodegradation of BDE-209 by Crude Enzymes
2.6.1. Preparation of Extracellular and Intracellular Crude Enzymes
2.6.2. Degradation Experiments of BDE-209 by Crude Enzymes
2.7. Cytochrome P450 Enzyme Inhibitor Experiments
2.8. Extraction of BDE-209 after Biodegradation
2.9. Quality Assurance and Quality Control (QA/QC)
2.10. Statistical Analysis
3. Results
3.1. Identification of Aerobic Degrading Bacteria for BDE-209
3.2. BDE-209 Biodegradation by Complex Bacteria Communities
3.3. Factors Affecting BDE-209 Biodegradation by Complex Bacteria Community M (1+2)
3.4. Analysis of Metabolites and Pathway for BDE-209 Biodegradation
3.5. BDE-209 Biodegradation by Crude Enzymes
3.6. Effect of Cytochrome P450 Enzyme Inhibitor on BDE-209 Biodegradation
4. Discussion
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Level | 1 | 2 | 3 | 4 | 5 | |
---|---|---|---|---|---|---|
Single Factor Variable | ||||||
Temperature (°C) | 10 | 20 | 25 | 30 | 40 | |
pH value | 5 | 6 | 7 | 8 | 9 | |
Inoculation volume (%) | 1 | 5 | 10 | 15 | 20 |
Products | Name | Possible Chemical Structure |
---|---|---|
a | diphenyl ether | |
b | 1-phenoxycyclohexa-3,5-diene-1,2-diol | |
c | phenol | |
d | pyrocatechol | |
e | (2E,4E)-hexa-2,4-dienedioic acid | |
f | 2,3-dihydrodiol diphenyl ether | |
g | 2,3-dihydroxydiphenyl ether | |
h | monohydroxydiphenyl ether | |
i | (Z)-hex-2-enedioic acid | |
j | (E)-2-hydroxyhex-2-enedioic acid | |
k | 3-oxohexanedioic acid |
Degradation Efficiency (%) | |||
---|---|---|---|
M1 | M2 | M (1+2) | |
Extracellular crude enzymes | 6.29 ± 0.01 | 15.99 ± 0.02 | 20.02 ± 0.01 |
Intracellular crude enzymes | 61.69 ± 0.02 | 5.08 ± 0.03 | 69.18 ± 0.06 |
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Hu, D.; Wu, J.; Fan, L.; Li, S.; Jia, R. Aerobic Degradation Characteristics and Mechanism of Decabromodiphenyl Ether (BDE-209) Using Complex Bacteria Communities. Int. J. Environ. Res. Public Health 2022, 19, 17012. https://doi.org/10.3390/ijerph192417012
Hu D, Wu J, Fan L, Li S, Jia R. Aerobic Degradation Characteristics and Mechanism of Decabromodiphenyl Ether (BDE-209) Using Complex Bacteria Communities. International Journal of Environmental Research and Public Health. 2022; 19(24):17012. https://doi.org/10.3390/ijerph192417012
Chicago/Turabian StyleHu, Dingfan, Juan Wu, Luosheng Fan, Shunyao Li, and Rong Jia. 2022. "Aerobic Degradation Characteristics and Mechanism of Decabromodiphenyl Ether (BDE-209) Using Complex Bacteria Communities" International Journal of Environmental Research and Public Health 19, no. 24: 17012. https://doi.org/10.3390/ijerph192417012