1
|
Liu S, Zhou Y, Feng Y, Peng Q, Li Y, He C, Fang Z, Xiao Y, Fang W. A cost-saving, safe, and highly efficient natural mediator for laccase application on aflatoxin detoxification. Food Chem 2024; 455:139862. [PMID: 38833866 DOI: 10.1016/j.foodchem.2024.139862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 05/14/2024] [Accepted: 05/26/2024] [Indexed: 06/06/2024]
Abstract
Laccase mediators possess advantage of oxidizing substrates with high redox potentials, such as aflatoxin B1 (AFB1). High costs of chemically synthesized mediators limit laccase industrial application. In this study, thin stillage extract (TSE), a byproduct of corn-based ethanol fermentation was investigated as the potential natural mediator of laccases. Ferulic acid, p-coumaric acid, and vanillic acid were identified as the predominant phenolic compounds of TSE. With the assistance of 0.05 mM TSE, AFB1 degradation activity of novel laccase Glac1 increased by 17 times. The promoting efficiency of TSE was similar to ferulic acid, but superior to vanillic acid and p-coumaric acid, with 1.2- and 1.3-fold increases, respectively. After Glac1-TSE treatment, two oxidation products were identified. Ames test showed AFB1 degradation products lost mutagenicity. Meanwhile, TSE also showed 1.3-3.0 times promoting effect on laccase degradation activity in cereal flours. Collectively, a safe and highly efficient natural mediator was obtained for aflatoxin detoxification.
Collapse
Affiliation(s)
- Shenglong Liu
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Biocatalysis and Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Yu Zhou
- Key Laboratory of Jianghuai Agricultural product Fine processing and resource Utilization, Ministry of Agriculture and Rural Affairs, Anhui Agricultural University, 130 Changjiang Road West, Hefei 230036, China
| | - Yan Feng
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Biocatalysis and Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Qixia Peng
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Biocatalysis and Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Yurong Li
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Biocatalysis and Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Cheng He
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Biocatalysis and Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Zemin Fang
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Biocatalysis and Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Yazhong Xiao
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Biocatalysis and Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China.
| | - Wei Fang
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Biocatalysis and Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China.
| |
Collapse
|
2
|
Li J, Liu Z, Zhao J, Wang G, Xie T. Molecular insights into substrate promiscuity of CotA laccase catalyzing lignin-phenol derivatives. Int J Biol Macromol 2024; 256:128487. [PMID: 38042324 DOI: 10.1016/j.ijbiomac.2023.128487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 11/25/2023] [Accepted: 11/27/2023] [Indexed: 12/04/2023]
Abstract
CotA laccases are multicopper oxidases known for promiscuously oxidizing a broad range of substrates. However, studying substrate promiscuity is limited by the complexity of electron transfer (ET) between substrates and laccases. Here, a systematic analysis of factors affecting ET including electron donor acceptor coupling (ΗDA), driving force (ΔG) and reorganization energy (λ) was done. Catalysis rates of syringic acid (SA), syringaldehyde (SAD) and acetosyringone (AS) (kcat(SAD) > kcat(SA) > kcat(AS)) are not entirely dependent on the ability to form phenol radicals indicated by ΔG and λ calculated by Density Functional Theory (SA < SAD ≈ AS). In determined CotA/SA and CotA/SAD structures, SA and SAD bound at 3.9 and 3.7 Å away from T1 Cu coordinating His419 ensuring a similar ΗDA. Abilities of substrate to form phenol radicals could mainly account for difference between kcat(SAD) and kcat(SA). Furthermore, substrate pocket is solvent exposed at the para site of substrate's phenol hydroxyl, which would destabilize binding of AS in the same orientation and position resulting in low kcat. Our results indicated shallow partially covered binding site with propensity of amino acids distribution might help CotA discriminate lignin-phenol derivatives. These findings give new insights for developing specific catalysts for industrial application.
Collapse
Affiliation(s)
- Jiakun Li
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; Key Laboratory of Environmental Microbiology of Sichuan Province, Chengdu 610041, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhongchuan Liu
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; Key Laboratory of Environmental Microbiology of Sichuan Province, Chengdu 610041, China
| | - Jianwei Zhao
- Shenzhen HUASUAN Technology Co. Ltd., Shenzhen 518055, China
| | - Ganggang Wang
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; Key Laboratory of Environmental Microbiology of Sichuan Province, Chengdu 610041, China
| | - Tian Xie
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; Key Laboratory of Environmental Microbiology of Sichuan Province, Chengdu 610041, China.
| |
Collapse
|
3
|
Saha R, Mukhopadhyay M. Time-dependent electrochemical characteristics of a phenolic and non-phenolic compound in the presence of laccase/ABTS system. PLoS One 2022; 17:e0275338. [PMID: 36170267 PMCID: PMC9518846 DOI: 10.1371/journal.pone.0275338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 09/14/2022] [Indexed: 11/18/2022] Open
Abstract
The laccase/ABTS system has found several industrial applications ranging from biodeterioration to biodegradation and bioremediation. However, the capability of the laccase/ABTS system varies depending upon the type of substrate used. Voltammetric studies involving two widely used substrates, i.e., veratryl alcohol (VA) and alkali lignin (AL), were performed to gain new insight into the electrochemical behavior of the reactions. The individual electrochemical reactions established the differential nature of the two compounds over a concentration range, along with the mediator ABTS producing a distinguishing effect on their oxidative reactions, which was further studied over a 12hour period. It was followed by the reaction of both the compounds against the laccase/ABTS system that helped verify the role of the enzyme and the mediator in the electron transfer process and elucidate the mediated oxidations carried out by laccase against the phenolic and non-phenolic substrate through the process of cyclic voltammetry.
Collapse
Affiliation(s)
- Rituparna Saha
- Department of Biotechnology, JIS University, Kolkata, West Bengal, India
- Department of Biochemistry, University of Calcutta, Kolkata, West Bengal, India
| | - Mainak Mukhopadhyay
- Department of Biotechnology, JIS University, Kolkata, West Bengal, India
- * E-mail:
| |
Collapse
|
4
|
Electrocatalytic Kinetics of N-Hydroxynaphthalimide as a Redox Mediator for Benzyl Alcohol Oxidation Using Rotating Disk Electrode Voltammetry. Electrocatalysis (N Y) 2022. [DOI: 10.1007/s12678-021-00691-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
5
|
Ardila-Leal LD, Poutou-Piñales RA, Pedroza-Rodríguez AM, Quevedo-Hidalgo BE. A Brief History of Colour, the Environmental Impact of Synthetic Dyes and Removal by Using Laccases. Molecules 2021; 26:3813. [PMID: 34206669 PMCID: PMC8270347 DOI: 10.3390/molecules26133813] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 06/12/2021] [Accepted: 06/16/2021] [Indexed: 12/07/2022] Open
Abstract
The history of colour is fascinating from a social and artistic viewpoint because it shows the way; use; and importance acquired. The use of colours date back to the Stone Age (the first news of cave paintings); colour has contributed to the social and symbolic development of civilizations. Colour has been associated with hierarchy; power and leadership in some of them. The advent of synthetic dyes has revolutionized the colour industry; and due to their low cost; their use has spread to different industrial sectors. Although the percentage of coloured wastewater discharged by the textile; food; pharmaceutical; cosmetic; and paper industries; among other productive areas; are unknown; the toxic effect and ecological implications of this discharged into water bodies are harmful. This review briefly shows the social and artistic history surrounding the discovery and use of natural and synthetic dyes. We summarise the environmental impact caused by the discharge of untreated or poorly treated coloured wastewater to water bodies; which has led to physical; chemical and biological treatments to reduce the colour units so as important physicochemical parameters. We also focus on laccase utility (EC 1.10.3.2), for discolouration enzymatic treatment of coloured wastewater, before its discharge into water bodies. Laccases (p-diphenol: oxidoreductase dioxide) are multicopper oxidoreductase enzymes widely distributed in plants, insects, bacteria, and fungi. Fungal laccases have employed for wastewater colour removal due to their high redox potential. This review includes an analysis of the stability of laccases, the factors that influence production at high scales to achieve discolouration of high volumes of contaminated wastewater, the biotechnological impact of laccases, and the degradation routes that some dyes may follow when using the laccase for colour removal.
Collapse
Affiliation(s)
- Leidy D. Ardila-Leal
- Grupo de Biotecnología Ambiental e Industrial (GBAI), Laboratorio de Biotecnología Molecular, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá 110-23, DC, Colombia;
| | - Raúl A. Poutou-Piñales
- Grupo de Biotecnología Ambiental e Industrial (GBAI), Laboratorio de Biotecnología Molecular, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá 110-23, DC, Colombia;
| | - Aura M. Pedroza-Rodríguez
- Grupo de Biotecnología Ambiental e Industrial (GBAI), Laboratorio de Microbiología Ambiental y de Suelos, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá 110-23, DC, Colombia;
| | - Balkys E. Quevedo-Hidalgo
- Grupo de Biotecnología Ambiental e Industrial (GBAI), Laboratorio de Biotecnología Aplicada, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá 110-23, DC, Colombia;
| |
Collapse
|
6
|
Du Y, Ma H, Huang L, Pan Y, Huang J, Liu Y. Electrochemical characteristics of the decolorization of three dyes by laccase mediator system (LMS) with synthetic and natural mediators. CHEMOSPHERE 2020; 239:124779. [PMID: 31521934 DOI: 10.1016/j.chemosphere.2019.124779] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 09/02/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
Laccase mediator system (LMS), a very attractive candidate for refractory organics biodegradation, harbors tremendous potential on industry application. However, the performance of LMS usually varies with the discrepancy of mediators and substrates in their chemical structures. Here, we adopt electrochemical analysis that is able to assess the degradation performance of various LMS on three different dyes by quantitative analysis of reaction outcome. Two mechanisms were suggested to explain the grafting of three mediators (1-Hydroxybenzotriazole, Violuric Acid and Acetosyringone), involving the transformation of proton or electron to produce active moieties, which subsequently react with target substrates. A thorough electrochemical insight into the redox features of mediators and its change in the presence of laccase and substrates were carried out using electrochemical analysis. The effectiveness of each kind of LMS on substrates was preliminarily evaluated by analyzing the change of the peak current and potential of mediators. The actual conversion rate of dyes was used to verify the analysis results, which confirms the important role of the stability of the oxidized form as well as their redox potential of the mediators in determining the mechanism of substrate oxidation. The application of electrochemical analysis in efficiency evaluation of LMS shed new light on effective selection of suitable mediators for degradation of refractory organics. It was therefore possible to prejudge the efficacy of LMS by analyzing the electrochemical parameters of target substances and mediators, which undoubtedly has broad further application prospects of LMS.
Collapse
Affiliation(s)
- Yiwen Du
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China; Department of Environmental Engineering, Chongqing University, Chongqing, China
| | - Hua Ma
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China; Department of Environmental Engineering, Chongqing University, Chongqing, China.
| | - Liping Huang
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China; Department of Environmental Engineering, Chongqing University, Chongqing, China
| | - Yu Pan
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China; Department of Environmental Engineering, Chongqing University, Chongqing, China
| | - Juan Huang
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China; Department of Environmental Engineering, Chongqing University, Chongqing, China
| | - Yan Liu
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China; Department of Environmental Engineering, Chongqing University, Chongqing, China
| |
Collapse
|
7
|
Wu Y, Chen Y, Wei N. Biocatalytic properties of cell surface display laccase for degradation of emerging contaminant acetaminophen in water reclamation. Biotechnol Bioeng 2019; 117:342-353. [DOI: 10.1002/bit.27214] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/18/2019] [Accepted: 10/20/2019] [Indexed: 01/20/2023]
Affiliation(s)
- Ying Wu
- Department of Civil and Environmental Engineering and Earth Sciences University of Notre Dame Notre Dame Indiana
| | - Yingying Chen
- Department of Civil and Environmental Engineering and Earth Sciences University of Notre Dame Notre Dame Indiana
| | - Na Wei
- Department of Civil and Environmental Engineering and Earth Sciences University of Notre Dame Notre Dame Indiana
| |
Collapse
|
8
|
Wang X, Bai Y, Huang H, Tu T, Wang Y, Wang Y, Luo H, Yao B, Su X. Degradation of Aflatoxin B 1 and Zearalenone by Bacterial and Fungal Laccases in Presence of Structurally Defined Chemicals and Complex Natural Mediators. Toxins (Basel) 2019; 11:toxins11100609. [PMID: 31652557 PMCID: PMC6832423 DOI: 10.3390/toxins11100609] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 10/11/2019] [Accepted: 10/18/2019] [Indexed: 11/16/2022] Open
Abstract
Aflatoxin B1 (AFB1) and zearalenone (ZEN) exert deleterious effects to human and animal health. In this study, the ability of a CotA laccase from Bacillus subtilis (BsCotA) to degrade these two mycotoxins was first investigated. Among the nine structurally defined chemical compounds, methyl syringate was the most efficient mediator assisting BsCotA to degrade AFB1 (98.0%) and ZEN (100.0%). BsCotA could also use plant extracts, including the Epimedium brevicornu, Cucumis sativus L., Lavandula angustifolia, and Schizonepeta tenuifolia extracts to degrade AFB1 and ZEN. Using hydra and BLYES as indicators, it was demonstrated that the degraded products of AFB1 and ZEN using the laccase/mediator systems were detoxified. Finally, a laccase of fungal origin was also able to degrade AFB1 and ZEN in the presence of the discovered mediators. The findings shed light on the possibility of using laccases and a mediator, particularly a natural plant-derived complex mediator, to simultaneously degrade AFB1 and ZEN contaminants in food and feed.
Collapse
Affiliation(s)
- Xiaolu Wang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Yingguo Bai
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Huoqing Huang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Tao Tu
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Yuan Wang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Yaru Wang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Huiying Luo
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Bin Yao
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Xiaoyun Su
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| |
Collapse
|
9
|
Barbieri A, Lanzalunga O, Lapi A, Di Stefano S. N-Hydroxyphthalimide: A Hydrogen Atom Transfer Mediator in Hydrocarbon Oxidations Promoted by Nonheme Iron(IV)-Oxo Complexes. J Org Chem 2019; 84:13549-13556. [PMID: 31532207 DOI: 10.1021/acs.joc.9b01813] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The oxidation of a series of hydrocarbons by the nonheme iron(IV)-oxo complex [(N4Py)FeIV═O]2+ is efficiently mediated by N-hydroxyphthalimide. The increase of reactivity is associated to the oxidation of the mediator to the phthalimide N-oxyl radical, which efficiently abstracts a hydrogen atom from the substrates, regenerating the mediator in its reduced form.
Collapse
Affiliation(s)
- Alessia Barbieri
- Dipartimento di Chimica , Università di Roma "La Sapienza", Istituto CNR per i Sistemi Biologici (ISB-CNR), Sezione Meccanismi di Reazione , P.le A. Moro , 5 I-00185 Rome , Italy
| | - Osvaldo Lanzalunga
- Dipartimento di Chimica , Università di Roma "La Sapienza", Istituto CNR per i Sistemi Biologici (ISB-CNR), Sezione Meccanismi di Reazione , P.le A. Moro , 5 I-00185 Rome , Italy
| | - Andrea Lapi
- Dipartimento di Chimica , Università di Roma "La Sapienza", Istituto CNR per i Sistemi Biologici (ISB-CNR), Sezione Meccanismi di Reazione , P.le A. Moro , 5 I-00185 Rome , Italy
| | - Stefano Di Stefano
- Dipartimento di Chimica , Università di Roma "La Sapienza", Istituto CNR per i Sistemi Biologici (ISB-CNR), Sezione Meccanismi di Reazione , P.le A. Moro , 5 I-00185 Rome , Italy
| |
Collapse
|
10
|
Rodríguez-Couto S. Fungal Laccase: A Versatile Enzyme for Biotechnological Applications. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/978-3-030-10480-1_13] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
11
|
Feng N, Guo L, Ren H, Xie Y, Jiang Z, Ek M, Zhai H. Changes in chemical structures of wheat straw auto-hydrolysis lignin by 3-hydroxyanthranilic acid as a laccase mediator. Int J Biol Macromol 2019; 122:210-215. [DOI: 10.1016/j.ijbiomac.2018.10.153] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 09/28/2018] [Accepted: 10/22/2018] [Indexed: 01/11/2023]
|
12
|
Nutting JE, Rafiee M, Stahl SS. Tetramethylpiperidine N-Oxyl (TEMPO), Phthalimide N-Oxyl (PINO), and Related N-Oxyl Species: Electrochemical Properties and Their Use in Electrocatalytic Reactions. Chem Rev 2018; 118:4834-4885. [PMID: 29707945 DOI: 10.1021/acs.chemrev.7b00763] [Citation(s) in RCA: 575] [Impact Index Per Article: 82.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
N-Oxyl compounds represent a diverse group of reagents that find widespread use as catalysts for the selective oxidation of organic molecules in both laboratory and industrial applications. While turnover of N-oxyl catalysts in oxidation reactions may be accomplished with a variety of stoichiometric oxidants, N-oxyl reagents have also been extensively used as catalysts under electrochemical conditions in the absence of chemical oxidants. Several classes of N-oxyl compounds undergo facile redox reactions at electrode surfaces, enabling them to mediate a wide range of electrosynthetic reactions. Electrochemical studies also provide insights into the structural properties and mechanisms of chemical and electrochemical catalysis by N-oxyl compounds. This review provides a comprehensive survey of the electrochemical properties and electrocatalytic applications of aminoxyls, imidoxyls, and related reagents, of which the two prototypical and widely used examples are 2,2,6,6-tetramethylpiperidine N-oxyl (TEMPO) and phthalimide N-oxyl (PINO).
Collapse
Affiliation(s)
- Jordan E Nutting
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Mohammad Rafiee
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Shannon S Stahl
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| |
Collapse
|
13
|
Eshtaya M, Ejigu A, Stephens G, Walsh DA, Chen GZ, Croft AK. Developing energy efficient lignin biomass processing - towards understanding mediator behaviour in ionic liquids. Faraday Discuss 2018; 190:127-45. [PMID: 27228384 DOI: 10.1039/c5fd00226e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Environmental concerns have brought attention to the requirement for more efficient and renewable processes for chemicals production. Lignin is the second most abundant natural polymer, and might serve as a sustainable resource for manufacturing fuels and aromatic derivatives for the chemicals industry after being depolymerised. In this work, the mediator 2,2'-azino-bis(3-ethylbenthiazoline-6-sulfonic acid) diammonium salt (ABTS), commonly used with enzyme degradation systems, has been evaluated by means of cyclic voltammetry (CV) for enhancing the oxidation of the non-phenolic lignin model compound veratryl alcohol and three types of lignin (organosolv, Kraft and lignosulfonate) in the ionic liquid 1-ethyl-3-methylimidazolium ethyl sulfate, ([C2mim][C2SO4]). The presence of either veratryl alcohol or organosolv lignin increased the second oxidation peak of ABTS under select conditions, indicating the ABTS-mediated oxidation of these molecules at high potentials in [C2mim][C2SO4]. Furthermore, CV was applied as a quick and efficient way to explore the impact of water in the ABTS-mediated oxidation of both organosolv and lignosulfonate lignin. Higher catalytic efficiencies of ABTS were observed for lignosulfonate solutions either in sodium acetate buffer or when [C2mim][C2SO4] (15 v/v%) was present in the buffer solution, whilst there was no change found in the catalytic efficiency of ABTS in [C2mim][C2SO4]-lignosulfonate mixtures relative to ABTS alone. In contrast, organosolv showed an initial increase in oxidation, followed by a significant decrease on increasing the water content of a [C2mim][C2SO4] solution.
Collapse
Affiliation(s)
- Majd Eshtaya
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Andinet Ejigu
- Department of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK
| | - Gill Stephens
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Darren A Walsh
- Department of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK
| | - George Z Chen
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK. and Department of Chemical and Environmental Engineering, Faculty of Science & Engineering, University of Nottingham Ningbo China, Ningbo 315100, P. R. China
| | - Anna K Croft
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK.
| |
Collapse
|
14
|
Biocatalytic membranes prepared by inkjet printing functionalized yeast cells onto microfiltration substrates. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.12.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
15
|
Chen Y, Stemple B, Kumar M, Wei N. Cell Surface Display Fungal Laccase as a Renewable Biocatalyst for Degradation of Persistent Micropollutants Bisphenol A and Sulfamethoxazole. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:8799-8808. [PMID: 27414990 DOI: 10.1021/acs.est.6b01641] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Fungal laccases have high activity in degrading various persistent organic pollutants. However, using enzymes in solution for water treatment has limitations of nonreusability, short enzyme lifetimes, and high cost of single use. In this study, we developed a new type of biocatalyst by immobilizing fungal laccase on the surface of yeast cells using synthetic biology techniques. The biocatalyst, referred to as surface display laccase (SDL), had an enzyme activity of 104 ± 3 mU/g dry cell (with 2,2-azinobis-3-ethylbenzothiazoline-6-sulfonate (ABTS)). The SDL retained over 90% of the initial enzyme activity after 25 days storage at room temperature, while, in contrast, activity of free laccase declined to 60% of its initial activity. The SDL could be reused with high stability as it retained 74% of initial activity after eight repeated batch reactions. Proof-of-concept evaluations of the effectiveness of SDL in treating contaminants of emerging concern were performed with bisphenol A and sulfamethoxazole. Results from contaminant degradation kinetics and the effects of redox mediator amendment provided insights into the factors affecting the efficacy of the SDL system. This study reports, for the first time, the development of a surface display enzyme biocatalyst as an effective and renewable alternative for treating recalcitrant organic micropollutants.
Collapse
Affiliation(s)
- Yingying Chen
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame , 156 Fitzpatrick Hall, Notre Dame, Indiana 46556, United States
| | - Brooke Stemple
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame , 156 Fitzpatrick Hall, Notre Dame, Indiana 46556, United States
| | - Manish Kumar
- Department of Chemical Engineering, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Na Wei
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame , 156 Fitzpatrick Hall, Notre Dame, Indiana 46556, United States
| |
Collapse
|
16
|
Cannatelli MD, Ragauskas AJ. Two Decades of Laccases: Advancing Sustainability in the Chemical Industry. CHEM REC 2016; 17:122-140. [PMID: 27492131 DOI: 10.1002/tcr.201600033] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Indexed: 12/30/2022]
Abstract
Given the current state of environmental affairs and that our future on this planet as we know it is in jeopardy, research and development into greener and more sustainable technologies within the chemical and forest products industries is at its peak. Given the global scale of these industries, the need for environmentally benign practices is propelling new green processes. These challenges are also impacting academic research and our reagents of interest are laccases. These enzymes are employed in a variety of biotechnological applications due to their native function as catalytic oxidants. They are about as green as it gets when it comes to chemical processes, requiring O2 as their only co-substrate and producing H2 O as the sole by-product. The following account will review our twenty year journey on the use of these enzymes within our research group, from their initial use in biobleaching of kraft pulps and for fiber modification within the pulp and paper industry, to their current application as green catalytic oxidants in the field of synthetic organic chemistry.
Collapse
Affiliation(s)
- Mark D Cannatelli
- Renewable Bioproducts Institute, School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA.,Joint Institute for Biological Sciences, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Arthur J Ragauskas
- Renewable Bioproducts Institute, School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA.,Joint Institute for Biological Sciences, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.,Department of Chemical & Biomolecular Engineering, Department of Forestry, Wildlife & Fisheries, University of Tennessee, Knoxville, TN 37996, USA
| |
Collapse
|
17
|
Margot J, Copin PJ, von Gunten U, Barry D, Holliger C. Sulfamethoxazole and isoproturon degradation and detoxification by a laccase-mediator system: Influence of treatment conditions and mechanistic aspects. Biochem Eng J 2015. [DOI: 10.1016/j.bej.2015.06.008] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
18
|
Sitarz AK, Mikkelsen JD, Meyer AS. Structure, functionality and tuning up of laccases for lignocellulose and other industrial applications. Crit Rev Biotechnol 2015; 36:70-86. [DOI: 10.3109/07388551.2014.949617] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
19
|
Cusola O, Valls C, Vidal T, Tzanov T, Roncero MB. Electrochemical Insights on the Hydrophobicity of Cellulose Substrates Imparted by Enzymatically Oxidized Gallates with Increasing Alkyl Chain Length. ACS APPLIED MATERIALS & INTERFACES 2015; 7:13834-13841. [PMID: 26057550 DOI: 10.1021/acsami.5b01904] [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: 06/04/2023]
Abstract
In this work, we studied the influence of the alkyl chain length in enzymatically oxidized gallates on the development of hydrophobicity on paper-based materials, and further correlated the obtained effect to the redox mechanism of the enzymatic treatment. Laccase (Lac) enzyme was used to oxidize various members of the gallate homologous series in the presence or not of lignosulfonates (SL) to produce several functionalization solutions (FS), which were subsequently applied to cellulosic substrates. The hydrophobicity of the substrates was then assessed by means of water drop test (WDT) and contact angle (WCA) measurements. Hydrophobicity peaked reaching WDT and WCA values around 5000 s and 130°, respectively, and then decreased with increasing length of the hydrocarbon chain of gallate. Cyclic voltrammetry (CV) was used to study the effect of SL on the redox reactions of several gallates. The intensity of the anodic peak in their voltammograms decreased increasing the chain length of the gallate. The electrochemical behavior of lauryl gallate (LG) differed from that of other gallates. The fact that the voltammetric curves for SL and LG intersected at a potential of 478 mV indicates an enhancing effect of SL on LG oxidation at high potentials (above 478 mV).
Collapse
Affiliation(s)
- Oriol Cusola
- †CELBIOTECH_Paper Engineering Research Group, Universitat Politècnica de Catalunya BarcelonaTech, Colom 11, E-08222 Terrassa, Spain
| | - Cristina Valls
- †CELBIOTECH_Paper Engineering Research Group, Universitat Politècnica de Catalunya BarcelonaTech, Colom 11, E-08222 Terrassa, Spain
| | - Teresa Vidal
- †CELBIOTECH_Paper Engineering Research Group, Universitat Politècnica de Catalunya BarcelonaTech, Colom 11, E-08222 Terrassa, Spain
| | - Tzanko Tzanov
- ‡Group of Molecular and Industrial Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya BarcelonaTech, Rambla Sant Nebridi, 22, 08222 Terrassa, Spain
| | - M Blanca Roncero
- †CELBIOTECH_Paper Engineering Research Group, Universitat Politècnica de Catalunya BarcelonaTech, Colom 11, E-08222 Terrassa, Spain
| |
Collapse
|
20
|
Can laccases catalyze bond cleavage in lignin? Biotechnol Adv 2015; 33:13-24. [DOI: 10.1016/j.biotechadv.2014.12.008] [Citation(s) in RCA: 224] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 12/06/2014] [Accepted: 12/25/2014] [Indexed: 11/13/2022]
|
21
|
Singh G, Kaur K, Puri S, Sharma P. Critical factors affecting laccase-mediated biobleaching of pulp in paper industry. Appl Microbiol Biotechnol 2014; 99:155-64. [PMID: 25421562 DOI: 10.1007/s00253-014-6219-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 11/06/2014] [Accepted: 11/07/2014] [Indexed: 10/24/2022]
Abstract
Next to xylanases, laccases from fungi and alkali-tolerant bacteria are the most important biocatalysts that can be employed for eco-friendly biobleaching of hard and soft wood pulps in the paper industry. Laccases offer a potential alternative to conventional, environmental-polluting chlorine and chlorine-based bleaching and has no reductive effect on the final yield of pulp as compared to hemicellulases (xylanases and mannanases). In the last decade, reports on biobleaching with laccases are based on laboratory observations only. There are several critical challenges before this enzyme can be implemented for pulp bleaching at the industrial scale. This review discusses significant factors like redox potential, laccase mediator system (LMS)-synthetic or natural, pH, temperature, stability of enzyme, unwanted grafting reactions of laccase, and cost-intensive production at large scale which constitute a great hitch for the successful implementation of laccases at industrial level.
Collapse
Affiliation(s)
- Gursharan Singh
- Biotechnology Branch, University Institute of Engineering and Technology, Panjab University, Chandigarh, India,
| | | | | | | |
Collapse
|
22
|
Nguyen LN, Hai FI, Price WE, Leusch FDL, Roddick F, Ngo HH, Guo W, Magram SF, Nghiem LD. The effects of mediator and granular activated carbon addition on degradation of trace organic contaminants by an enzymatic membrane reactor. BIORESOURCE TECHNOLOGY 2014; 167:169-177. [PMID: 24980029 DOI: 10.1016/j.biortech.2014.05.125] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 05/30/2014] [Accepted: 05/31/2014] [Indexed: 06/03/2023]
Abstract
The removal of four recalcitrant trace organic contaminants (TrOCs), namely carbamazepine, diclofenac, sulfamethoxazole and atrazine by laccase in an enzymatic membrane reactor (EMR) was studied. Laccases are not effective for degrading non-phenolic compounds; nevertheless, 22-55% removal of these four TrOCs was achieved by the laccase EMR. Addition of the redox-mediator syringaldehyde (SA) to the EMR resulted in a notable dose-dependent improvement (15-45%) of TrOC removal affected by inherent TrOC properties and loading rates. However, SA addition resulted in a concomitant increase in the toxicity of the treated effluent. A further 14-25% improvement in aqueous phase removal of the TrOCs was consistently observed following a one-off dosing of 3g/L granular activated carbon (GAC). Mass balance analysis reveals that this improvement was not due solely to adsorption but also enhanced biodegradation. GAC addition also reduced membrane fouling and the SA-induced toxicity of the effluent.
Collapse
Affiliation(s)
- Luong N Nguyen
- Strategic Water Infrastructure Lab, School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Faisal I Hai
- Strategic Water Infrastructure Lab, School of Civil, Mining and Environmental Engineering, 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, Victoria 3001, Australia
| | - Hao H Ngo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, Broadway, NSW 2007, Australia
| | - Wenshan Guo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, Broadway, NSW 2007, 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
|
23
|
Comparing the catalytic efficiency of ring substituted 1-hydroxybenzotriazoles as laccase mediators. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.02.068] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
24
|
Heap L, Green A, Brown D, van Dongen B, Turner N. Role of laccase as an enzymatic pretreatment method to improve lignocellulosic saccharification. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00046c] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The saccharification of wheat straw was improved when an incubation step was performed withTrametes versicolorlaccase (TvL) and the mediator 1-hydroxybenzotriazole (1-HBT) prior to an alkaline peroxide extraction (APE).
Collapse
Affiliation(s)
- Lucy Heap
- School of Chemistry
- Manchester Institute of Biotechnology (MIB)
- University of Manchester
- , UK
| | - Anthony Green
- School of Chemistry
- Manchester Institute of Biotechnology (MIB)
- University of Manchester
- , UK
| | - David Brown
- Shell International Exploration and Production
- Westhollow Technology Centre
- Houston, USA
| | - Bart van Dongen
- School of Earth
- Atmospheric & Environmental Sciences and Williamson Research Centre for Molecular Environmental Science
- The University of Manchester
- Manchester, UK
| | - Nicholas Turner
- School of Chemistry
- Manchester Institute of Biotechnology (MIB)
- University of Manchester
- , UK
| |
Collapse
|
25
|
Shiraishi T, Sannami Y, Kamitakahara H, Takano T. Comparison of a series of laccase mediators in the electro-oxidation reactions of non-phenolic lignin model compounds. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.05.112] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
26
|
Aracri E, Tzanov T, Vidal T. Use of Cyclic Voltammetry as an Effective Tool for Selecting Efficient Enhancers for Oxidative Bioprocesses: Importance of pH. Ind Eng Chem Res 2013. [DOI: 10.1021/ie3027586] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elisabetta Aracri
- Department
of Textile and Paper Engineering and ‡Group of Molecular and Industrial
Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya—BarcelonaTech, E-08222 Terrassa, Spain
| | - Tzanko Tzanov
- Department
of Textile and Paper Engineering and ‡Group of Molecular and Industrial
Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya—BarcelonaTech, E-08222 Terrassa, Spain
| | - Teresa Vidal
- Department
of Textile and Paper Engineering and ‡Group of Molecular and Industrial
Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya—BarcelonaTech, E-08222 Terrassa, Spain
| |
Collapse
|
27
|
Rosado T, Bernardo P, Koci K, Coelho AV, Robalo MP, Martins LO. Methyl syringate: an efficient phenolic mediator for bacterial and fungal laccases. BIORESOURCE TECHNOLOGY 2012; 124:371-378. [PMID: 22995168 DOI: 10.1016/j.biortech.2012.08.023] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 08/03/2012] [Accepted: 08/04/2012] [Indexed: 06/01/2023]
Abstract
The aim of the present work is to provide insight into the mechanism of laccase reactions using syringyl-type mediators. We studied the pH dependence and the kinetics of oxidation of syringyl-type phenolics using the low CotA and the high redox potential TvL laccases. Additionally, the efficiency of these compounds as redox mediators for the oxidation of non-phenolic lignin units was tested at different pH values and increasing mediator/non-phenolic ratios. Finally, the intermediates and products of reactions were identified by LC-MS and (1)H NMR. These approaches allow concluding on the (1) mechanism involved in the oxidation of phenolics by bacterial laccases, (2) importance of the chemical nature and properties of phenolic mediators, (3) apparent independence of the enzyme's properties on the yields of non-phenolics conversion, (4) competitive routes involved in the catalytic cycle of the laccase-mediator system with several new C-O coupling type structures being proposed.
Collapse
Affiliation(s)
- Tânia Rosado
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras, Portugal
| | | | | | | | | | | |
Collapse
|
28
|
Li Y, Cao X, Qian X, Chen Y, Liu S. Immobilization of laccase in N-doped carbon hollow spheres/chitosan composite film for electrochemical detection of kraft lignin. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2012.09.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
29
|
Díaz-González M, Vidal T, Tzanov T. Phenolic compounds as enhancers in enzymatic and electrochemical oxidation of veratryl alcohol and lignins. Appl Microbiol Biotechnol 2010; 89:1693-700. [DOI: 10.1007/s00253-010-3007-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Revised: 11/02/2010] [Accepted: 11/04/2010] [Indexed: 10/18/2022]
|
30
|
Lloret L, Eibes G, Lú-Chau T, Moreira M, Feijoo G, Lema J. Laccase-catalyzed degradation of anti-inflammatories and estrogens. Biochem Eng J 2010. [DOI: 10.1016/j.bej.2010.06.005] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
31
|
González Arzola K, Gimeno Y, Arévalo M, Falcón M, Hernández Creus A. Electrochemical and AFM characterization on gold and carbon electrodes of a high redox potential laccase from Fusarium proliferatum. Bioelectrochemistry 2010; 79:17-24. [DOI: 10.1016/j.bioelechem.2009.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2009] [Accepted: 10/01/2009] [Indexed: 10/20/2022]
|
32
|
Valls C, Colom JF, Baffert C, Gimbert I, Roncero MB, Sigoillot JC. Comparing the efficiency of the laccase–NHA and laccase–HBT systems in eucalyptus pulp bleaching. Biochem Eng J 2010. [DOI: 10.1016/j.bej.2010.02.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
33
|
Díaz González M, Vidal T, Tzanov T. Electrochemical Study of Phenolic Compounds as Enhancers in Laccase-Catalyzed Oxidative Reactions. ELECTROANAL 2009. [DOI: 10.1002/elan.200904678] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|