1
|
Onaizi SA. Statistical analyses of the effect of rhamnolipid biosurfactant addition on the enzymatic removal of Bisphenol A from wastewater. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.101929] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
2
|
Onaizi SA, Alshabib M. The degradation of bisphenol A by laccase: Effect of biosurfactant addition on the reaction kinetics under various conditions. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117785] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
3
|
Sun K, Chen H, Zhang Q, Li S, Liu Q, Si Y. Influence of humic acids on fungal laccase-initiated 17α-ethynylestradiol oligomerization: Transformation kinetics and products distribution. CHEMOSPHERE 2020; 258:127371. [PMID: 32554020 DOI: 10.1016/j.chemosphere.2020.127371] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/05/2020] [Accepted: 06/07/2020] [Indexed: 06/11/2023]
Abstract
Fungal laccase has aroused great concern in rapidly removing estrogens because of its ability to accelerate humification and oligomerization. Here, the effect of two humic acids (HAs) on the reaction kinetics and products distribution of 17α-ethynylestradiol (EE2) in laccase-initiated humification and coupling was systematically elucidated. Laccase from Trametes versicolor exhibited over 98.3% removal rate for EE2 at pH 5.0 within 120 min, while HAs invariably restrained EE2 transformation by competing with target-substrate for the enzymatic catalytic center. EE2 removal followed pseudo-first-order kinetics, and the rate constant was decreased markedly with increasing concentration of two HAs (0-60 mg L-1). Additionally, laccase heightened the aromaticity and humification degrees (A250 nm/A365 nm ratio) of HAs probably due to the formation of new humic polymers such as (HA)m and/or (HA)m-(EE2)n (m and n represent the number of HA and EE2 units, respectively). Three major EE2 oligomers were identified, in accordance with a mechanism involving the phenoxy radical-driven polymerization to yield a wide variety of self-coupling products. Notably, HAs diminished the extent of EE2 self-coupling but aggrandized the cross-coupling between EE2 and HAs, and the inhibition degree of EE2 self-coupling increased with the concentration of HAs. One major reason is EE2 could be covalently incorporated into humic molecules to produce (HA)m-(EE2)n cross-coupling products via radical-caused C-C, C-O-C, and/or C-O-C bonds, thereby reducing EE2 self-oligomerization. These findings highlight that HAs play a vital role in the fungal laccase-induced humification and oligomerization of EE2, which obviously alter the geochemical fate and transport of EE2 in natural aquatic ecosystems.
Collapse
Affiliation(s)
- Kai Sun
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China.
| | - Huiling Chen
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Qingyun Zhang
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Shunyao Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qingzhu Liu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Youbin Si
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China.
| |
Collapse
|
4
|
A review on phenolic wastewater remediation using homogeneous and heterogeneous enzymatic processes: Current status and potential challenges. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.03.028] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
5
|
Aptitude of Oxidative Enzymes for Treatment of Wastewater Pollutants: A Laccase Perspective. Molecules 2019; 24:molecules24112064. [PMID: 31151229 PMCID: PMC6600482 DOI: 10.3390/molecules24112064] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 04/19/2019] [Accepted: 04/27/2019] [Indexed: 01/28/2023] Open
Abstract
Natural water sources are very often contaminated by municipal wastewater discharges which contain either of xenobiotic pollutants and their sometimes more toxic degradation products, or both, which frustrates the universal millenium development goal of provision of the relatively scarce pristine freshwater to water-scarce and -stressed communities, in order to augment their socioeconomic well-being. Seeing that both regulatory measures, as regards the discharge limits of wastewater, and the query for efficient treatment methods remain unanswered, partially, the prospects of enzymatic treatment of wastewater is advisable. Therefore, a reconsideration was assigned to the possible capacity of oxidative enzymes and the respective challenges encountered during their applications in wastewater treatment, and ultimately, the prospects of laccase, a polyphenol oxidase that oxidizes aromatic and inorganic substrates with electron-donating groups in treatment aromatic contaminants of wastewater, in real wastewater situations, since it is assumed to be a vehicle for a greener community. Furthermore, the importance of laccase-driven catalysis toward maintaining mass-energy balance, hence minimizing environmental waste, was comprehensibly elucidated, as well the strategic positioning of laccase in a model wastewater treatment facility for effective treatment of wastewater contaminants.
Collapse
|
6
|
Bou-Mitri C, Kermasha S. Lyoprotection and stabilization of laccase extract from Coriolus hirsutus, using selected additives. AMB Express 2018; 8:152. [PMID: 30264182 PMCID: PMC6160375 DOI: 10.1186/s13568-018-0683-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 09/24/2018] [Indexed: 02/05/2023] Open
Abstract
The development of stable lyophilized laccase, obtained from Coriolus hirsutus, using a wide range of temperature treatments and storage conditions, was investigated. Using selected lyoprotectants, including, dextran 6 kDa, sucrose and a mixture of sodium benzoate, potassium sorbate and sorbitol (BKSS) (1.5:1.0:98.5; w/w/w) resulted by 2.4, 1.4 and 1.8-fold increase in laccase activity after lyophilization as compared to the fresh enzyme, respectively, whereas the addition of mannitol preserved 98.2% of its activity. Using 2.5% (w/v) dextran (15-25 kDa) or mannitol appeared to be the most appropriate lyoprotectants for the laccase activity. The laccase stability of the lyophilized enzymatic extract was greatly enhanced with the presence of mannitol, with 96.2, 38.9 and 24.7% of residual activity after 4 weeks of storage at - 80, 4 and 25 °C, respectively. The inactivation constant (kinactivation) value and the amount required to decrease 50% of the laccase activity (C1/2) showed that Carbowax® polyethylene glycol (PEG)-8000 was the most appropriate additive for laccase activity, followed by glycerol and CuSO4. When the enzymatic extract was incubated at 50 °C in the presence of either CuSO4, PEG-8000 or glycerol, the time required to decrease 50% of the laccase initial activity (t50), were 52.9, 54.6, 50.2 h, respectively, as compared to that of the control trial of 38.9 h.
Collapse
|
7
|
Ratanapongleka K, Punbut S. Removal of acetaminophen in water by laccase immobilized in barium alginate. ENVIRONMENTAL TECHNOLOGY 2018; 39:336-345. [PMID: 28278092 DOI: 10.1080/09593330.2017.1301563] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 02/26/2017] [Indexed: 06/06/2023]
Abstract
This research has focused on the optimization of immobilized laccase condition and utilization in degradation of acetaminophen contaminated in aqueous solution. Laccase from Lentinus polychrous was immobilized in barium alginate. The effects of laccase immobilization such as sodium alginate concentration, barium chloride concentration and gelation time were studied. The optimal conditions for immobilization were sodium alginate 5% (w/v), barium chloride 5% (w/v) and gelation time of 60 min. Immobilized laccase was then used for acetaminophen removal. Acetaminophen was removed quickly in the first 50 min. The degradation rate and percentage of removal increased when the enzyme concentration increased. Immobilized laccase at 0.57 U/g-alginate showed the maximum removal at 94% in 240 min. The removal efficiency decreased with increasing initial acetaminophen concentration. The Km value for immobilized laccase (98.86 µM) was lower than that of free laccase (203.56 µM), indicating that substrate affinity was probably enhanced by immobilization. The immobilized enzyme exhibited high activity and good acetaminophen removal at pH 7 and temperature of 35°C. The activation energies of free and immobilized laccase for degradation of acetaminophen were 8.08 and 17.70 kJ/mol, respectively. It was also found that laccase stability to pH and temperature increased after immobilization. Furthermore, immobilized laccase could be reused for five cycles. The capability of removal and enzyme activity were retained above 70%.
Collapse
Affiliation(s)
- Karnika Ratanapongleka
- a Department of Chemical Engineering, Faculty of Engineering , Ubon Ratchathani University , Ubon Ratchathani , Thailand
| | - Supot Punbut
- a Department of Chemical Engineering, Faculty of Engineering , Ubon Ratchathani University , Ubon Ratchathani , Thailand
| |
Collapse
|
8
|
Su J, Noro J, Loureiro A, Martins M, Azoia NG, Fu J, Wang Q, Silva C, Cavaco-Paulo A. PEGylation Greatly Enhances Laccase Polymerase Activity. ChemCatChem 2017. [DOI: 10.1002/cctc.201700849] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jing Su
- International Joint Research Laboratory for Textile and Fiber Bioprocesses; Jiangnan University; Wuxi 214122 China
- Centre of Biological Engineering; University of Minho, Campus de Gualtar; 4710-057 Braga Portugal
| | - Jennifer Noro
- Centre of Biological Engineering; University of Minho, Campus de Gualtar; 4710-057 Braga Portugal
| | - Ana Loureiro
- Centre of Biological Engineering; University of Minho, Campus de Gualtar; 4710-057 Braga Portugal
| | - Madalena Martins
- Centre of Biological Engineering; University of Minho, Campus de Gualtar; 4710-057 Braga Portugal
| | - Nuno G. Azoia
- Centre of Biological Engineering; University of Minho, Campus de Gualtar; 4710-057 Braga Portugal
| | - Jiajia Fu
- International Joint Research Laboratory for Textile and Fiber Bioprocesses; Jiangnan University; Wuxi 214122 China
| | - Qiang Wang
- International Joint Research Laboratory for Textile and Fiber Bioprocesses; Jiangnan University; Wuxi 214122 China
| | - Carla Silva
- Centre of Biological Engineering; University of Minho, Campus de Gualtar; 4710-057 Braga Portugal
| | - Artur Cavaco-Paulo
- International Joint Research Laboratory for Textile and Fiber Bioprocesses; Jiangnan University; Wuxi 214122 China
- Centre of Biological Engineering; University of Minho, Campus de Gualtar; 4710-057 Braga Portugal
| |
Collapse
|
9
|
Arca-Ramos A, Eibes G, Feijoo G, Lema JM, Moreira MT. Enzymatic reactors for the removal of recalcitrant compounds in wastewater. BIOCATAL BIOTRANSFOR 2017. [DOI: 10.1080/10242422.2017.1315411] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Adriana Arca-Ramos
- Department of Chemical Engineering, Institute of Technology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Gemma Eibes
- Department of Chemical Engineering, Institute of Technology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Gumersindo Feijoo
- Department of Chemical Engineering, Institute of Technology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Juan M. Lema
- Department of Chemical Engineering, Institute of Technology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - María Teresa Moreira
- Department of Chemical Engineering, Institute of Technology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| |
Collapse
|
10
|
Feng Y, Lu K, Gao S, Mao L. The fate and transformation of tetrabromobisphenol A in natural waters, mediated by oxidoreductase enzymes. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2017; 19:596-604. [PMID: 28327772 DOI: 10.1039/c6em00703a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study, we examined the fate and transformation of tetrabromobisphenol A (TBBPA), mediated by the representative oxidoreductases (laccase and horseradish peroxidase (HRP)) in natural waters. Both enzymes could readily degrade TBBPA at environmentally relevant concentrations (e.g., 10 nmol L-1) in natural waters. After 2 hour treatment, 0.5-25% and 35-65% of TBBPA were degraded in municipal wastewater and natural surface waters by a laccase or HRP-catalyzed reaction, respectively. Enzyme kinetics evaluations indicated that the kCAT/KM ratio of HRP (1.01 μM-1 s-1) was much higher than that of laccase (0.032 μM-1 s-1) for TBBPA degradation, suggesting that the catalytic performance of HRP towards TBBPA was more efficient than that of laccase. The effects of pH and organic matter on the enzymatic degradation efficiency were explored. Organic matter in the water inhibited the enzymatic degradation efficiency and the degree of inhibition was proportional to the UV254 values of water. Product identification indicated that the product distribution of TBBPA at low concentration (10 nmol L-1) was similar to that of TBBPA at high concentration (10 μmol L-1). The degradation intermediates underwent further enzymatic reaction to yield higher molecular weight secondary products. Toxicity assessment showed that TBBPA toxicity was effectively eliminated by the oxidoreductase-catalyzed reaction.
Collapse
Affiliation(s)
- Yiping Feng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, P. R. China.
| | | | | | | |
Collapse
|
11
|
Zeng S, Qin X, Xia L. Degradation of the herbicide isoproturon by laccase-mediator systems. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2016.12.016] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
12
|
Blavier J, Songulashvili G, Simon C, Penninckx M, Flahaut S, Scippo ML, Debaste F. Assessment of methods of detection of water estrogenicity for their use as monitoring tools in a process of estrogenicity removal. ENVIRONMENTAL TECHNOLOGY 2016; 37:3104-19. [PMID: 27144327 DOI: 10.1080/09593330.2016.1177119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Methods of monitoring of estrogenicity in water were gathered, compared, and tested within the context of their practical use as measurement and design tools, in the development of a process of degradation of estrogenic endocrine disruptors. In this work, the focus was put on in vitro assays, with the use of analytical techniques as additional analysis when possible. Practically, from a literature review, four methods that seemed most suitable to practical use required in a process development were tested: the Yeast Estrogen Screen assay, the Lyticase-assisted Yeast Estrogen Screen assay (LYES), the MMV-LUC assay and the HPLC-UV analytical method. Dose-response curves in response to estrogenic standard 17β-estradiol were compared. Bisphenol A estrogenicity was measured by the methods as well. The model for the calculation of estradiol equivalents as measurements units was adapted. The methods were assessed in terms of ranges of detection, time of experiment, cost, ease of the experiment, reproducibility, etc. Based on that assessment, the LYES assay was selected and successfully applied to the monitoring of estrogenicity removal from 17β-estradiol and bisphenol A. More precisely, the bioassay allowed the acquisition of kinetic curves for a laboratory-scaled process of estrogenicity removal by immobilized enzymes in a continuous packed-bed reactor. The LYES assay was found to have a real methodological potential for scale-up and design of a treatment process. The HPLC-UV method showed good complementarity with the LYES assay for the monitoring of bisphenol A concentrations in parallel with estrogenicity, reporting no significant estrogenicity from degradation byproducts, among others.
Collapse
Affiliation(s)
- J Blavier
- a Department Transfers, Interfaces & Processes , Université Libre de Bruxelles , Bruxelles , Belgium
| | - G Songulashvili
- b Department of Applied Microbiology , Université Libre de Bruxelles c/o Institut de Recherches Microbiologiques Jean-Marie Wiame , Bruxelles , Belgium
| | - C Simon
- c Department of Food Sciences, Laboratory of Food Analysis , FARAH - Veterinary Public Health, Université de Liège , Liege , Belgium
| | - M Penninckx
- a Department Transfers, Interfaces & Processes , Université Libre de Bruxelles , Bruxelles , Belgium
| | - S Flahaut
- b Department of Applied Microbiology , Université Libre de Bruxelles c/o Institut de Recherches Microbiologiques Jean-Marie Wiame , Bruxelles , Belgium
| | - M L Scippo
- c Department of Food Sciences, Laboratory of Food Analysis , FARAH - Veterinary Public Health, Université de Liège , Liege , Belgium
| | - F Debaste
- a Department Transfers, Interfaces & Processes , Université Libre de Bruxelles , Bruxelles , Belgium
| |
Collapse
|
13
|
Nguyen LN, van de Merwe JP, Hai FI, Leusch FDL, Kang J, Price WE, Roddick F, Magram SF, Nghiem LD. Laccase-syringaldehyde-mediated degradation of trace organic contaminants in an enzymatic membrane reactor: Removal efficiency and effluent toxicity. BIORESOURCE TECHNOLOGY 2016; 200:477-484. [PMID: 26519700 DOI: 10.1016/j.biortech.2015.10.054] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 10/01/2015] [Accepted: 10/06/2015] [Indexed: 06/05/2023]
Abstract
Redox-mediators such as syringaldehyde (SA) can improve laccase-catalyzed degradation of trace organic contaminants (TrOCs) but may increase effluent toxicity. The degradation performance of 14 phenolic and 17 non-phenolic TrOCs by a continuous flow enzymatic membrane reactor (EMR) at different TrOC and SA loadings was assessed. A specific emphasis was placed on the investigation of the toxicity of the enzyme (laccase), SA, TrOCs and the treated effluent. Batch tests demonstrated significant individual and interactive toxicity of the laccase and SA preparations. Reduced removal of resistant TrOCs by the EMR was observed for dosages over 50μg/L. SA addition at a concentration of 10μM significantly improved TrOC removal, but no removal improvement was observed at the elevated SA concentrations of 50 and 100μM. The treated effluent showed significant toxicity at SA concentrations beyond 10μM, providing further evidence that higher dosage of SA must be avoided.
Collapse
Affiliation(s)
- Luong N Nguyen
- Strategic Water Infrastructure Lab, School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Jason P van de Merwe
- Smart Water Research Centre, Australian Rivers Institute, School of Environment, Griffith University, QLD 4222, Australia
| | - Faisal I Hai
- Strategic Water Infrastructure Lab, School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Frederic D L Leusch
- Smart Water Research Centre, Australian Rivers Institute, School of Environment, Griffith University, QLD 4222, Australia
| | - Jinguo Kang
- Strategic Water Infrastructure Lab, School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia; Strategic Water Infrastructure Lab, School of Chemistry, University of Wollongong, Wollongong, NSW 2522, Australia
| | - William E Price
- Strategic Water Infrastructure Lab, School of Chemistry, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Felicity Roddick
- School of Civil, Environmental and Chemical Engineering, RMIT University, Melbourne, VIC 3001, Australia
| | - Saleh F Magram
- Department of Civil Engineering, King Abdul Aziz University, Jeddah 21589, Saudi Arabia
| | - Long D Nghiem
- Strategic Water Infrastructure Lab, School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
| |
Collapse
|
14
|
Fungal Bioremediation of Emerging Micropollutants in Municipal Wastewaters. FUNGAL APPLICATIONS IN SUSTAINABLE ENVIRONMENTAL BIOTECHNOLOGY 2016. [DOI: 10.1007/978-3-319-42852-9_6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
15
|
Rangelov S, Nicell JA. A model of the transient kinetics of laccase-catalyzed oxidation of phenol at micromolar concentrations. Biochem Eng J 2015. [DOI: 10.1016/j.bej.2015.02.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
16
|
|
17
|
Garcia-Morales R, Rodríguez-Delgado M, Gomez-Mariscal K, Orona-Navar C, Hernandez-Luna C, Torres E, Parra R, Cárdenas-Chávez D, Mahlknecht J, Ornelas-Soto N. Biotransformation of Endocrine-Disrupting Compounds in Groundwater: Bisphenol A, Nonylphenol, Ethynylestradiol and Triclosan by a Laccase Cocktail from Pycnoporus sanguineus CS43. WATER, AIR, AND SOIL POLLUTION 2015; 226:251. [PMID: 26190872 PMCID: PMC4498228 DOI: 10.1007/s11270-015-2514-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 06/22/2015] [Indexed: 05/20/2023]
Abstract
The biodegradation of organic compounds present in water at trace concentration has become a critical environmental problem. In particular, enzymatic oxidation by fungal laccases offers a promising alternative for efficient and sustainable removal of organic pollutants in water. In this work, the biocatalytic ability of laccases from the Pycnoporus sanguineus CS43 fungus was evaluated. A filtered culture supernatant (laccase cocktail) evidenced an enhanced biotransformation capability to remove common endocrine-disruptor compounds (EDCs), such as bisphenol A, 4-nonylphenol, 17-α-ethynylestradiol and triclosan. A biodegradation of around 89-100 % was achieved for all EDCs using synthetic samples (10 mg L-1) and after the enzymatic treatment with 100 U L-1 (50.3 U mg -1). The biodegradation rates obtained were fitted to a first order reaction. Furthermore, enzymatic biocatalytic activity was also evaluated in groundwater samples coming from northwestern Mexico, reaching biotransformation percentages between 55 and 93 % for all tested compounds. As far as we know this is the first study on real groundwater samples in which the enzymatic degradation of target EDCs by a laccase cocktail from any strain of Pycnoporus sanguineus was evaluated. In comparison with purified laccases, the use of cocktail offers operational advantages since additional purification steps can be avoided.
Collapse
Affiliation(s)
- R. Garcia-Morales
- />Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Monterrey, NL 64849 Mexico
- />Universidad Juárez Autónoma de Tabasco, Av. Universidad S/N Magisterial, Villahermosa, 86040 Tabasco Mexico
| | - M. Rodríguez-Delgado
- />Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Monterrey, NL 64849 Mexico
| | - K. Gomez-Mariscal
- />Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Monterrey, NL 64849 Mexico
| | - C. Orona-Navar
- />Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Monterrey, NL 64849 Mexico
| | - C. Hernandez-Luna
- />Laboratorio de Enzimología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León. Av. Universidad s/n, Ciudad Universitaria San Nicolás de los Garza, San Nicolás de los Garza, NL 64450 Mexico
| | - E. Torres
- />Posgrado en Ciencias Ambientales, Benemérita Universidad Autónoma de Puebla, Edificio 103G, 7, Puebla, Mexico
| | - R. Parra
- />Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Monterrey, NL 64849 Mexico
| | - D. Cárdenas-Chávez
- />Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Monterrey, NL 64849 Mexico
| | - J. Mahlknecht
- />Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Monterrey, NL 64849 Mexico
| | - N. Ornelas-Soto
- />Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Monterrey, NL 64849 Mexico
| |
Collapse
|
18
|
Gassara F, Brar SK, Verma M, Tyagi RD. Bisphenol A degradation in water by ligninolytic enzymes. CHEMOSPHERE 2013; 92:1356-60. [PMID: 23668961 DOI: 10.1016/j.chemosphere.2013.02.071] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 02/26/2013] [Accepted: 02/27/2013] [Indexed: 05/20/2023]
Abstract
Many endocrine disruptor compounds, such as bisphenol A (BPA) are used today and released into the environment at low doses but they are barely degraded in wastewater treatment plants. One of the potential alternatives to effectively degrade endocrine disruptor compounds is based on the use of the oxidative action of extracellular fungal enzymes. The aim of this work is to study the ability of free and encapsulated enzymes (manganese peroxidase, lignin peroxidase and laccase) to degrade BPA. Higher degradation of BPA (90%) by ligninolytic enzymes encapsulated on polyacrylamide hydrogel and pectin after 8h was obtained. The degradation of BPA while using the free enzyme (26%) was lower than the value obtained with encapsulated enzymes. The presence of pectin in the formulation significantly (p>0.05) enhanced the activity of enzymes. Kinetics of BPA degradation showed an increase in Vm, while Km remained constant when enzymes were encapsulated. Hence, encapsulation protected the enzymes from non-competitive inhibition.
Collapse
Affiliation(s)
- Fatma Gassara
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, Canada G1K 9A9
| | | | | | | |
Collapse
|
19
|
Qasemian L, Billette C, Guiral D, Alazard E, Moinard M, Farnet AM. Halotolerant laccases from Chaetomium sp., Xylogone sphaerospora, and Coprinopsis sp. isolated from a Mediterranean coastal area. Fungal Biol 2012; 116:1090-8. [PMID: 23063188 DOI: 10.1016/j.funbio.2012.08.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Revised: 07/27/2012] [Accepted: 08/10/2012] [Indexed: 10/28/2022]
Abstract
Laccases (EC 1.10.3.2) are phenoloxidases involved in the transformation of the recalcitrant fraction of organic matter in soil. These enzymes are also able to transform certain aromatic pollutants such as polycyclic aromatic hydrocarbons (PAHs) and are known to be inhibited by chloride ions. This study aims to test the potential of some fungal strains newly isolated from natural environments subjected to high osmotic pressure such as coastal ecosystems, to produce chloride tolerant laccases. Three strains were identified as Chaetomium sp., Xylogone sphaerospora (two Ascomycota), and Coprinopsis sp. (a Basidiomycota) and the laccases produced by these fungi were weakly inhibited by chloride ions compared with previous data from literature. Moreover, we tested their reactivity towards various PAHs which are widespread anthropic pollutants. They were able to transform anthracene to 9,10-anthraquinone and we determine 7.5 eV as the threshold of ionization potential for PAH oxidation by these laccases.
Collapse
Affiliation(s)
- Leila Qasemian
- Equipe Vulnérabilité des Ecosystèmes Microbiens IMBE, UMR CNRS 7263, IRD 237, Marseille Cedex, France.
| | | | | | | | | | | |
Collapse
|
20
|
Ba S, Arsenault A, Hassani T, Jones JP, Cabana H. Laccase immobilization and insolubilization: from fundamentals to applications for the elimination of emerging contaminants in wastewater treatment. Crit Rev Biotechnol 2012; 33:404-18. [PMID: 23051065 DOI: 10.3109/07388551.2012.725390] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Over the last few decades many attempts have been made to use biocatalysts for the biotransformation of emerging contaminants in environmental matrices. Laccase, a multicopper oxidoreductase enzyme, has shown great potential in oxidizing a large number of phenolic and non-phenolic emerging contaminants. However, laccases and more broadly enzymes in their free form are biocatalysts whose applications in solution have many drawbacks rendering them currently unsuitable for large scale use. To circumvent these limitations, the enzyme can be immobilized onto carriers or entrapped within capsules; these two immobilization techniques have the disadvantage of generating a large mass of non-catalytic product. Insolubilization of the free enzymes as cross-linked enzymes (CLEAs) is found to yield a greater volume ratio of biocatalyst while improving the characteristics of the biocatalyst. Ultimately, novel techniques of enzymes insolubilization and stabilization are feasible with the combination of cross-linked enzyme aggregates (combi-CLEAs) and enzyme polymer engineered structures (EPESs) for the elimination of emerging micropollutants in wastewater. In this review, fundamental features of laccases are provided in order to elucidate their catalytic mechanism, followed by different chemical aspects of the immobilization and insolubilization techniques applicable to laccases. Finally, kinetic and reactor design effects for enzymes in relation with the potential applications of laccases as combi-CLEAs and EPESs for the biotransformation of micropollutants in wastewater treatment are discussed.
Collapse
Affiliation(s)
- Sidy Ba
- Department of Chemical Engineering, Université de Sherbrooke , Sherbrooke, Québec , Canada
| | | | | | | | | |
Collapse
|
21
|
Husain Q, Qayyum S. Biological and enzymatic treatment of bisphenol A and other endocrine disrupting compounds: a review. Crit Rev Biotechnol 2012; 33:260-92. [DOI: 10.3109/07388551.2012.694409] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
22
|
Khlifi-Slama R, Mechichi T, Sayadi S, Dhouib A. Effect of natural mediators on the stability of Trametes trogii laccase during the decolourization of textile wastewaters. J Microbiol 2012; 50:226-34. [DOI: 10.1007/s12275-012-1421-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Accepted: 12/21/2011] [Indexed: 11/28/2022]
|
23
|
Enaud E, Trovaslet M, Naveau F, Decristoforo A, Bizet S, Vanhulle S, Jolivalt C. Laccase chloride inhibition reduction by an anthraquinonic substrate. Enzyme Microb Technol 2011; 49:517-25. [PMID: 22142726 DOI: 10.1016/j.enzmictec.2011.07.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Revised: 07/03/2011] [Accepted: 07/07/2011] [Indexed: 11/19/2022]
Abstract
Due to their low substrate specificity, fungal laccases have a great potential in industrial applications, including the bioremediation of colored wastewaters from textile industry. However, the presence of halides in these effluents (up to 1M NaCl) which inhibit laccases is a drawback for bioremediation processes. In order to develop an efficient enzymatic remediation process for textile dye effluent, the possibility to reduce this halide inhibition is conditioned by a better understanding of the phenomenon. The present study gives a detailed account of the kinetics of chloride inhibition of both ABTS (a model substrate) and ABu62 (an anthraquinonic acid dye) oxidations catalyzed by Trametes versicolor laccase (LacIIIb). Chloride inhibition can be described by a mixed model for ABTS and a non-competitive model for ABu62 and both inhibitions are linear suggesting a single inhibitory site for chloride. Experiments were also conducted in presence of both substrates. An apparent activation of laccase was observed in the presence of ABu62 leading to an enhancement of the oxidation rate of ABTS. The extent of activation increased in the presence of chloride anions. Finally, for the first time to our knowledge, we evidenced that inhibition of ABTS oxidation by chloride can be reduced in the presence of ABu62.
Collapse
Affiliation(s)
- Estelle Enaud
- Earth and Life Institute, Applied Microbiology, Mycology Unit, Place Croix du Sud 3/6, 1348 Louvain-la-Neuve, Belgium.
| | | | | | | | | | | | | |
Collapse
|
24
|
Satar R, Husain Q. Catalyzed degradation of disperse dyes by calcium alginate-pectin entrapped bitter gourd (Momordica charantia) peroxidase. J Environ Sci (China) 2011; 23:1135-1142. [PMID: 22125906 DOI: 10.1016/s1001-0742(10)60525-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Calcium-alginate pectin entrapped bitter gourd peroxidase (BGP) has been employed for the treatment of disperse dyes: Disperse Brown 1 (DB 1) and Disperse Red 17 (DR 17). Peroxidase alone was unable to decolorize DR 17 and DB 1. However, the investigated dyes were decolorized maximally by BGP in the presence of 0.2 mmol/L redox mediator, violuric acid (VA). A slow decrease in percent decolorization was observed when VA concentration was higher than 0.2 mmol/L which could likely be due to the high reactivity of its aminoxyl radical (> N-O*) intermediate, that might undergo chemical reactions with aromatic amino acid side chains of the enzyme thereby inactivating it. Maximum decolorization of the dyes was observed at pH 3.0 and 40 degrees C within 2 hr of incubation. Immobilized peroxidase decolorized 98% DR 17 and 71% DB 1 using 35 U of BGP in batch process in 90 min. Immobilized enzyme decolorized 85% DR 17 and 51% DB 1 whereas soluble enzyme decolorized DR 17 to 48% and DB 1 to 30% at 60 degrees C. UV-visible spectral analysis was used to evaluate the degradation of these dyes and their toxicity was tested by Allium cepa test. The generally observed higher stability of the bioaffinity bound enzymes against various forms of inactivation may be related to the specific and strong binding of enzyme with bioaffinity support which prevents the unfolding/denaturation of enzyme. Thus entrapped peroxidase was found to be effective in the decolorization of the investigated dyes.
Collapse
Affiliation(s)
- Rukhsana Satar
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, UP, India
| | | |
Collapse
|
25
|
Biodegradation of bisphenols with immobilized laccase or tyrosinase on polyacrylonitrile beads. Biodegradation 2010; 22:673-83. [DOI: 10.1007/s10532-010-9440-2] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Accepted: 11/20/2010] [Indexed: 10/18/2022]
|
26
|
Satar R, Husain Q. Applications of Celite-adsorbed white radish (Raphanus sativus) peroxidase in batch process and continuous reactor for the degradation of reactive dyes. Biochem Eng J 2009. [DOI: 10.1016/j.bej.2009.04.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
27
|
Four marine-derived fungi for bioremediation of raw textile mill effluents. Biodegradation 2009; 21:217-33. [DOI: 10.1007/s10532-009-9295-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Accepted: 08/19/2009] [Indexed: 10/20/2022]
|
28
|
Ignatova M, Stoilova O, Manolova N, Mita D, Diano N, Nicolucci C, Rashkov I. Electrospun microfibrous poly(styrene-alt-maleic anhydride)/poly(styrene-co-maleic anhydride) mats tailored for enzymatic remediation of waters polluted by endocrine disruptors. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.06.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
29
|
Karim Z, Husain Q. Guaiacol-mediated oxidative degradation and polymerization of bisphenol A catalyzed by bitter gourd (Momordica charantia) peroxidase. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2009.02.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
30
|
Mita DG, Diano N, Grano V, Portaccio M, Rossi S, Bencivenga U, Manco I, Nicolucci C, Bianco M, Grimaldi T, Mita L, Georgieva S, Godjevargova T. The process of thermodialysis in bioremediation of waters polluted by endocrine disruptors. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2008.12.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
31
|
Ji G, Zhang H, Huang F, Huang X. Effects of nonionic surfactant Triton X-100 on the laccase-catalyzed conversion of bisphenol A. J Environ Sci (China) 2009; 21:1486-90. [PMID: 20108679 DOI: 10.1016/s1001-0742(08)62444-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The laccase-catalyzed conversion of bisphenol A (BPA) in aqueous solutions was studied in the absence and presence of nonionic surfactant Triton X-100. It was found that the addition of Triton X-100 into the reaction system increased the conversion of BPA, especially near the critical micelle concentration of Triton X-100. Also it was found that the stability of laccase was greatly improved in the presence of TritonX-100. Studies on the endogenous fluorescence emission of laccase indicated that there existed an interaction between Triton X-100 and laccase, which was beneficial to folding and stabilizating of laccase. The binding of Triton X-100 to the laccase surface also mitigated the inactivation effect caused by the free radicals and polymerization products. Under otherwise identical conditions, a lower dosage of laccase was needed for the higher conversion of BPA in the presence of Triton X-100.
Collapse
Affiliation(s)
- Guanglei Ji
- School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
| | | | | | | |
Collapse
|
32
|
Kurniawati S, Nicell JA. Characterization of Trametes versicolor laccase for the transformation of aqueous phenol. BIORESOURCE TECHNOLOGY 2008; 99:7825-7834. [PMID: 18406607 DOI: 10.1016/j.biortech.2008.01.084] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2006] [Revised: 01/11/2008] [Accepted: 01/19/2008] [Indexed: 05/26/2023]
Abstract
Laccase (oxygen oxidoreductase, EC 1.10.3.2) from Trametes versicolor was thoroughly characterized in terms of its catalytic stability and its effectiveness as a biocatalyst under various reaction conditions when using phenol as a model substrate. This enzyme demonstrated high or moderate degrees of stability at pHs from 5 to 8 at 25 degrees C and at temperatures from 10 to 30 degrees C at pH 6. Exponential decay expressions were successfully used to model laccase inactivation when incubated under various conditions of pH and temperature. Phenol transformation was optimum at pH 6, but significant transformation was observed over a pH range of 4-7, provided that sufficient laccase was present in the reacting solution. Partial inactivation of laccase was observed during the oxidation of phenol, even under conditions of optimal stability (pH 6 and 25 degrees C).
Collapse
Affiliation(s)
- Selvia Kurniawati
- Department of Civil Engineering and Applied Mechanics, McGill University, 817 Sherbrooke Street West. Montreal, Quebec, Canada H3A 2K6
| | | |
Collapse
|
33
|
Matto M, Husain Q. Redox-mediated decolorization of Direct Red 23 and Direct Blue 80 catalyzed by bioaffinity-based immobilized tomato(Lycopersicon esculentum)peroxidase. Biotechnol J 2008; 3:1224-31. [DOI: 10.1002/biot.200800049] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
34
|
Takamiya M, Magan N, Warner PJ. Impact assessment of bisphenol A on lignin-modifying enzymes by basidiomycete Trametes versicolor. JOURNAL OF HAZARDOUS MATERIALS 2008; 154:33-7. [PMID: 17996365 DOI: 10.1016/j.jhazmat.2007.09.098] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2007] [Revised: 09/22/2007] [Accepted: 09/24/2007] [Indexed: 05/20/2023]
Abstract
The impact of different concentrations of bisphenol A (BPA) was evaluated on growth of the white-rot basidiomycete, Trametes versicolor, and on the expression of genes encoding lignin-modifying enzyme (LME) activities. Effective doses (EDs) were obtained from fungal growth rate to monitor LME activities and the expression levels of their encoding genes. The fungus showed mycelial growth at concentrations of up to 300 microg ml(-1) of BPA with an ED50 value of 185 microg ml(-1). The LME activities were stimulated by BPA concentrations up to 300 microg ml(-1). The lignin peroxidase (LIP) encoding gene may be sensitive to BPA stress.
Collapse
Affiliation(s)
- Minako Takamiya
- Chemical Management Centre, National Institute of Technology and Evaluation, 2-49-10 Nishihara, Shibuya-ku, Tokyo 151-0066, Japan.
| | | | | |
Collapse
|
35
|
Auriol M, Filali-Meknassi Y, Adams CD, Tyagi RD, Noguerol TN, Piña B. Removal of estrogenic activity of natural and synthetic hormones from a municipal wastewater: efficiency of horseradish peroxidase and laccase from Trametes versicolor. CHEMOSPHERE 2008; 70:445-52. [PMID: 17897698 DOI: 10.1016/j.chemosphere.2007.06.064] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2007] [Revised: 06/24/2007] [Accepted: 06/26/2007] [Indexed: 05/15/2023]
Abstract
Some researches studied the removal of steroid estrogens by enzymatic treatment, however none verified the residual estrogenicity after the enzymatic treatment at environmental conditions. In this study, the residual estrogenic activities of the key natural and synthetic steroid estrogens were investigated following enzymatic treatment with horseradish peroxidase (HRP) and laccase from Trametes versicolor. Synthetic water and municipal wastewater containing environmental concentrations of estrone, 17beta-estradiol, estriol, and 17alpha-ethinylestradiol were treated. Liquid chromatography-mass spectrometry analysis demonstrated that the studied steroid estrogens were completely oxidized in the wastewater reaction mixture after a 1-h treatment with either HRP (8-10 U ml(-1)) or laccase (20 U ml(-1)). Using the recombinant yeast assay, it was also confirmed that both enzymatic treatments were very efficient in removing the estrogenic activity of the studied steroid estrogens. The laccase-catalyzed process seemed to present great advantages over the HRP-catalyzed system for up-scale applications for the treatment of municipal wastewater.
Collapse
Affiliation(s)
- Muriel Auriol
- University of Missouri-Rolla, Environmental Research Center of Emerging Contaminants, 220 Butler Carlton Hall, Rolla, MO 65409, USA
| | | | | | | | | | | |
Collapse
|
36
|
Cabana H, Jones JP, Agathos SN. Elimination of Endocrine Disrupting Chemicals using White Rot Fungi and their Lignin Modifying Enzymes: A Review. Eng Life Sci 2007. [DOI: 10.1002/elsc.200700017] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
|
37
|
Cabana H, Jones JP, Agathos SN. Preparation and characterization of cross-linked laccase aggregates and their application to the elimination of endocrine disrupting chemicals. J Biotechnol 2007; 132:23-31. [PMID: 17884220 DOI: 10.1016/j.jbiotec.2007.07.948] [Citation(s) in RCA: 150] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2007] [Revised: 07/02/2007] [Accepted: 07/20/2007] [Indexed: 11/25/2022]
Abstract
Laccase from the white rot fungus Coriolopsis polyzona was immobilized for the first time through the formation of cross-linked enzyme aggregates (CLEAs). Laccase CLEAs were produced by using 1000g of polyethylene glycol per liter of enzyme solution as precipitant and 200muM of glutaraldehyde as a cross-linking agent. These CLEAs had a laccase activity of 148Ug(-1) and an activity recovery of 60.2% when using 2,2'-azino-bis-(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) as substrate. CLEAs formed by co-aggregation with bovine serum albumin (BSA) as a stabilizer showed lower laccase activity and affinity for ABTS than those without BSA. The CLEAs co-aggregated with BSA showed higher residual activity against a protease, NaN(3), EDTA, methanol and acetone. The thermoresistance was higher for CLEAs than for free laccase and also higher for CLEAs co-aggregated with BSA than for simple CLEAs when tested at a pH of 3 and a temperature of 40 degrees C. Finally, laccase CLEAs were tested for their capacity to eliminate the known or suspected endocrine disrupting chemicals (EDCs) nonylphenol, bisphenol A and triclosan in a fluidized bed reactor. A 100-ml reactor with 0.5mg of laccase CLEAs operated continuously at a hydraulic retention time of 150min at room temperature and pH 5 could remove all three EDCs from a 5mgl(-1) solution.
Collapse
Affiliation(s)
- Hubert Cabana
- Department of Chemical Engineering, Université de Sherbrooke, 2500 Boulevard de l'Université, Sherbrooke, Quebec, Canada J1K 2R1
| | | | | |
Collapse
|
38
|
Kurniawati S, Nicell JA. Efficacy of mediators for enhancing the laccase-catalyzed oxidation of aqueous phenol. Enzyme Microb Technol 2007. [DOI: 10.1016/j.enzmictec.2007.03.003] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
39
|
Auriol M, Filali-Meknassi Y, Tyagi RD, Adams CD. Laccase-catalyzed conversion of natural and synthetic hormones from a municipal wastewater. WATER RESEARCH 2007; 41:3281-8. [PMID: 17585984 DOI: 10.1016/j.watres.2007.05.008] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2007] [Revised: 05/04/2007] [Accepted: 05/08/2007] [Indexed: 05/15/2023]
Abstract
The Trametes versicolor-derived laccase-catalyzed oxidation of natural estrogens (estrone--E1; 17beta-estradiol--E2; and estriol--E3) and a synthetic estrogen (17alpha-ethinylestradiol--EE2) was studied in synthetic water and municipal wastewater to optimize the process for steroid estrogen removal in wastewater. The optimal pH for each studied steroid estrogen oxidation was approximately 6 in synthetic water. This research also focused on the wastewater matrix effect on developed enzymatic treatment. At pH 7.0 and 25+/-1 degrees C, the experiments showed that the laccase-catalyzed system for the removal of steroid estrogens was not significantly affected by the municipal wastewater matrix. Laccase activity of 20 U/ml was sufficient to achieve complete removal of studied steroid estrogens in both synthetic water and municipal wastewater. Moreover, 1-hydroxy-benzotriazole, when used as a mediator, improved laccase-catalyzed system efficiency, thus decreasing the overall cost of the enzymatic system.
Collapse
Affiliation(s)
- Muriel Auriol
- University of Missouri-Rolla, Environmental Research Center of Emerging Contaminants, 220 Butler Carlton Hall, Rolla, MO 65409, USA
| | | | | | | |
Collapse
|
40
|
Maruyama T, Komatsu C, Michizoe J, Sakai S, Goto M. Laccase-mediated degradation and reduction of toxicity of the postharvest fungicide imazalil. Process Biochem 2007. [DOI: 10.1016/j.procbio.2006.09.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|