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Kyomuhimbo HD, Brink HG. Applications and immobilization strategies of the copper-centred laccase enzyme; a review. Heliyon 2023; 9:e13156. [PMID: 36747551 PMCID: PMC9898315 DOI: 10.1016/j.heliyon.2023.e13156] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 01/11/2023] [Accepted: 01/18/2023] [Indexed: 01/26/2023] Open
Abstract
Laccase is a multi-copper enzyme widely expressed in fungi, higher plants, and bacteria which facilitates the direct reduction of molecular oxygen to water (without hydrogen peroxide production) accompanied by the oxidation of an electron donor. Laccase has attracted attention in biotechnological applications due to its non-specificity and use of molecular oxygen as secondary substrate. This review discusses different applications of laccase in various sectors of food, paper and pulp, waste water treatment, pharmaceuticals, sensors, and fuel cells. Despite the many advantages of laccase, challenges such as high cost due to its non-reusability, instability in harsh environmental conditions, and proteolysis are often encountered in its application. One of the approaches used to minimize these challenges is immobilization. The various methods used to immobilize laccase and the different supports used are further extensively discussed in this review.
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Shi L, Zhao W, Yang Z, Subbiah V, Suleria HAR. Extraction and characterization of phenolic compounds and their potential antioxidant activities. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:81112-81129. [PMID: 36201076 PMCID: PMC9606084 DOI: 10.1007/s11356-022-23337-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 09/25/2022] [Indexed: 05/12/2023]
Abstract
For thousands of years, plant has been widely applied in the medical area and is an important part of human diet. A high content of nutrients could be found in all kinds of plants, and the most outstanding group of nutrients that attracts scientists' attention is the high level of phenolic compounds. Due to the relationship between high phenolic compound content and high antioxidant capacity, plant extracts are expected to become a potential treatment for oxidation stress diseases including diabetes and cancer. However, according to the instability of phenolic compounds to light and oxygen, there are certain difficulties in the extraction of such compounds. But after many years of development, the extraction technology of phenolic compounds has been quite stable, and the only problem is how to obtain high-quality extracts with high efficiency. To further enhance the value of plant extracts, concentration and separation methods are often applied, and when detailed analysis is required, characterization methods including HPLC and LC/GC-MS will be applied to evaluate the number and type of phenolic compounds. A series of antioxidant assays are widely performed in numerous studies to test the antioxidant capacity of the plant extracts, which is also an important basis for evaluating value of extracts. This paper intends to provide a view of a variety of methods used in plants' phenolic compound extraction, separation, and characterization. Furthermore, this review presents the advantages and disadvantages of techniques involved in phenolic compound research and provides selected representative bibliographic examples.
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Affiliation(s)
- Linghong Shi
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Wanrong Zhao
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Zihong Yang
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Vigasini Subbiah
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Hafiz Ansar Rasul Suleria
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, 3010, Australia.
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Cho J, Kim S, Lee H. Peroxidase‐like activity of an azamacrocyclic Ni(II) complex. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jang‐Hoon Cho
- Department of Chemistry and Green‐Nano Research Center Kyungpook National University Daegu South Korea
| | - Sunghwan Kim
- Department of Chemistry and Green‐Nano Research Center Kyungpook National University Daegu South Korea
| | - Hong‐In Lee
- Department of Chemistry and Green‐Nano Research Center Kyungpook National University Daegu South Korea
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Bravo C, De Nobili M, Gambi A, Martin-Neto L, Nascimento OR, Toniolo R. Kinetics of electron transfer reactions by humic substances: Implications for their biogeochemical roles and determination of their electron donating capacity. CHEMOSPHERE 2022; 286:131755. [PMID: 34365173 DOI: 10.1016/j.chemosphere.2021.131755] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Humic substances (HS) possess redox active groups covering a wide range of potentials and are used by facultative anaerobic microorganisms as electron acceptors. To serve as suitable electron shuttles for anaerobic respiration, HS should be able to re-oxidize relatively quickly to prevent polarization of the surrounding medium. Mediated electrochemical oxidation and decolorization assays, based on the reduction of the radical ion of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS•-) allow to determine the electron donating capacity (EDC) of HS, but uncertainties remain about the reaction time that should be allowed to obtain environmentally meaningful EDC values. In this work, we performed a kinetic analysis of the time trend of the reduction of ABTS•- by HS by Vis and Electron Paramagnetic Resonance (EPR) spectroscopies and by cyclic voltammetry. We found evidences of two concomitant separate mechanisms of electron exchange: a fast and a slow transfer processes which may have different environmental roles. These results can set a base to identify the appropriate conditions for the spectrophotometric determination of the fast and slow components of the EDC of HS.
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Affiliation(s)
- Carlo Bravo
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Via delle Scienze 208, Udine, I-33100, Italy; Department of Life Sciences, University of Trieste, Via Licio Giorgieri 5, Trieste, I-34128, Italy
| | - Maria De Nobili
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Via delle Scienze 208, Udine, I-33100, Italy.
| | - Alberto Gambi
- DPIA, University of Udine, Via del Cotonificio 108, Udine, I-33100, Italy
| | | | - Otaciro R Nascimento
- Institute of Physics of São Carlos (IFSC), University of São Paulo, CP 369, São Carlos-SP, 13560-970, Brazil
| | - Rosanna Toniolo
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Via delle Scienze 208, Udine, I-33100, Italy
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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: 63] [Impact Index Per Article: 21.0] [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.
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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;
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Ji F, Guo Y, Wang M, Wu Z, Shi Y, Zhao X, Wang H, Feng X, Zhao G. Excited state electronic structures and photochemistry of different oxidation states of 2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 253:119503. [PMID: 33610101 DOI: 10.1016/j.saa.2021.119503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/21/2020] [Accepted: 01/17/2021] [Indexed: 06/12/2023]
Abstract
The molecular structures of 2,2-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), were calculated by using time-dependent density functional theory (TDDFT) model with M062X method with 6-311G (d, p) basis set. In this work, the ABTS were theoretically investigated from the geometric structure, the energy levels of the lowest unoccupied molecular orbital (LUMO) and the highest occupied molecular orbital (HOMO), the energy level gap ΔEHOMO-LUMO of the molecular ground state, excited stated properties and the electronic absorption spectra of different oxidation states. We studied the energy levels of LUMO and HOMO of ABTS in different oxidation states. Frontier molecular orbital analysis can provide insight into the nature of excited states. ABTS was synthesized from N-ethylamine by total synthesis. Then, we measured the UV-Vis spectra of ABTS before and after being oxidized by K2S2O8. The calculated electronic structures and photochemical properties of different oxidation state of ABTS were in accordance with the experimental result. This work demonstrates the relationship between the electronic structures and photochemistry of different oxidation states ABTS hence paves the way for the rationally synthesis and deepen understanding of the photophysical properties of ABTS materials.
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Affiliation(s)
- Feixiang Ji
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical Engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China
| | - Yurong Guo
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical Engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China
| | - Mengqi Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical Engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China
| | - Zibo Wu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical Engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China
| | - Yanan Shi
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical Engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China
| | - Xiaoying Zhao
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical Engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China
| | - Haiyuan Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical Engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China
| | - Xia Feng
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical Engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China
| | - Guangjiu Zhao
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical Engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China.
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Analytical Methods Used in Determining Antioxidant Activity: A Review. Int J Mol Sci 2021; 22:ijms22073380. [PMID: 33806141 PMCID: PMC8037236 DOI: 10.3390/ijms22073380] [Citation(s) in RCA: 413] [Impact Index Per Article: 137.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 12/14/2022] Open
Abstract
The study of antioxidants and their implications in various fields, from food engineering to medicine and pharmacy, is of major interest to the scientific community. The present paper is a critical presentation of the most important tests used to determine the antioxidant activity, detection mechanism, applicability, advantages and disadvantages of these methods. Out of the tests based on the transfer of a hydrogen atom, the following were presented: the Oxygen Radical Absorption Capacity (ORAC) test, the Hydroxyl Radical Antioxidant Capacity (HORAC) test, the Total Peroxyl Radical Trapping Antioxidant Parameter (TRAP) test, and the Total Oxyradical Scavenging Capacity (TOSC) test. The tests based on the transfer of one electron include the Cupric Reducing Antioxidant Power (CUPRAC) test, the Ferric Reducing Antioxidant Power (FRAP) test, the Folin-Ciocalteu test. Mixed tests, including the transfer of both a hydrogen atom and an electron, include the 2,2'-Azinobis-(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) test, and the [2,2-di(4-tert-octylphenyl)-1-picrylhydrazyl] (DPPH) test. All these assays are based on chemical reactions and assessing the kinetics or reaching the equilibrium state relies on spectrophotometry, presupposing the occurrence of characteristic colours or the discolouration of the solutions to be analysed, which are processes monitored by specific wavelength adsorption. These assays were successfully applied in antioxidant analysis or the determination of the antioxidant capacity of complex samples. As a complementary method in such studies, one may use methods based on electrochemical (bio)sensors, requiring stages of calibration and validation. The use of chemical methods together with electrochemical methods may result in clarification of the operating mechanisms and kinetics of the processes involving several antioxidants.
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Abstract
As laccase (produced by Botrytis cinerea) can significantly alter the properties of wine, winemakers frequently use commercially available colorimetric kits and spectrophotometers to measure the activity of this enzyme in grapes, must and wine. Although the used kits are based on electrochemically active substrates (such as syringaldazine and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid), ABTS), the electrochemical determination of laccase activity as an alternative to the colorimetric determination was not thoroughly investigated up to now. Therefore, in the present work, we explored the electrochemical determination of laccase activity. Laccase activity measurements were carried out using either carbon fiber microelectrodes or screen-printed electrodes as working electrodes, either syringaldazine or ABTS as the electrochemically active laccase substrate, and either cyclic voltammetry or constant potential amperometry as the electrochemical method. The best performing approach, which combines ABTS, screen-printed gold electrodes, and constant potential amperometry, allowed identifying laccase positive must sample (i.e., must samples with › 3U/mL laccase) in about 5 min.
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Proteomic analysis reveals the damaging role of low redox laccase from Yersinia enterocolitica strain 8081 in the midgut of Helicoverpa armigera. Biotechnol Lett 2020; 42:2189-2210. [PMID: 32472187 DOI: 10.1007/s10529-020-02925-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 05/25/2020] [Indexed: 01/25/2023]
Abstract
OBJECTIVE Earlier, we have found that the enteropathogenic Yersinia enterocolitica have evolved the survival mechanisms that regulate the expression of laccase-encoding genes in the gut. The present study aims to characterize the purified recombinant laccase from Y. enterocolitica strain 8081 biovar 1B and understand its effect on the midgut of cotton bollworm, Helicoverpa armigera (Hübner) larvae. RESULTS The recombinant laccase protein showed high purity fold and low molecular mass (~ 43 kDa). H. armigera larvae fed with laccase protein showed a significant decrease in body weight and damage in the midgut. Further, transmission electron microscopy (TEM) studies revealed the negative effect of laccase protein on trachea, malpighian tubules, and villi of the insect. The proteome comparison between control and laccase-fed larvae of cotton bollworm showed significant expression of proteolytic enzymes, oxidoreductases, cytoskeletal proteins, ribosomal proteins; and proteins for citrate (TCA cycle) cycle, glycolysis, stress response, cell redox homeostasis, xenobiotic degradation, and insect defence. Moreover, it also resulted in the reduction of antioxidants, increased melanization (insect innate immune response), and enhanced free radical generation. CONCLUSIONS All these data collectively suggest that H. armigera (Hübner) larvae can be used to study the effect of microbes and their metabolites on the host physiology, anatomy, and survival.
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Ilyasov IR, Beloborodov VL, Selivanova IA, Terekhov RP. ABTS/PP Decolorization Assay of Antioxidant Capacity Reaction Pathways. Int J Mol Sci 2020; 21:ijms21031131. [PMID: 32046308 PMCID: PMC7037303 DOI: 10.3390/ijms21031131] [Citation(s) in RCA: 159] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 02/04/2020] [Accepted: 02/05/2020] [Indexed: 01/12/2023] Open
Abstract
The 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS•+) radical cation-based assays are among the most abundant antioxidant capacity assays, together with the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-based assays according to the Scopus citation rates. The main objective of this review was to elucidate the reaction pathways that underlie the ABTS/potassium persulfate decolorization assay of antioxidant capacity. Comparative analysis of the literature data showed that there are two principal reaction pathways. Some antioxidants, at least of phenolic nature, can form coupling adducts with ABTS•+, whereas others can undergo oxidation without coupling, thus the coupling is a specific reaction for certain antioxidants. These coupling adducts can undergo further oxidative degradation, leading to hydrazindyilidene-like and/or imine-like adducts with 3-ethyl-2-oxo-1,3-benzothiazoline-6-sulfonate and 3-ethyl-2-imino-1,3-benzothiazoline-6-sulfonate as marker compounds, respectively. The extent to which the coupling reaction contributes to the total antioxidant capacity, as well as the specificity and relevance of oxidation products, requires further in-depth elucidation. Undoubtedly, there are questions as to the overall application of this assay and this review adds to them, as specific reactions such as coupling might bias a comparison between antioxidants. Nevertheless, ABTS-based assays can still be recommended with certain reservations, particularly for tracking changes in the same antioxidant system during storage and processing.
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Singh G, Arya SK. Utility of laccase in pulp and paper industry: A progressive step towards the green technology. Int J Biol Macromol 2019; 134:1070-1084. [DOI: 10.1016/j.ijbiomac.2019.05.168] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 05/22/2019] [Accepted: 05/22/2019] [Indexed: 01/31/2023]
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Naseri M, Pitzalis F, Carucci C, Medda L, Fotouhi L, Magner E, Salis A. Lipase and Laccase Encapsulated on Zeolite Imidazolate Framework: Enzyme Activity and Stability from Voltammetric Measurements. ChemCatChem 2018. [DOI: 10.1002/cctc.201801293] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Maryam Naseri
- Department of Chemical and Geological SciencesUniversity of Cagliari-CSGI and CNBS Cittadella Universitaria Monserrato 09042 Italy
- Department of ChemistryUniversity of Alzahra Teheran 1993891176 Iran
| | - Federica Pitzalis
- Department of Chemical and Geological SciencesUniversity of Cagliari-CSGI and CNBS Cittadella Universitaria Monserrato 09042 Italy
| | - Cristina Carucci
- Department of Chemical Sciences Bernal InstituteUniversity of Limerick Limerick V94 T9PX Ireland
| | - Luca Medda
- Department of Chemical and Geological SciencesUniversity of Cagliari-CSGI and CNBS Cittadella Universitaria Monserrato 09042 Italy
| | - Lida Fotouhi
- Department of ChemistryUniversity of Alzahra Teheran 1993891176 Iran
| | - Edmond Magner
- Department of Chemical Sciences Bernal InstituteUniversity of Limerick Limerick V94 T9PX Ireland
| | - Andrea Salis
- Department of Chemical and Geological SciencesUniversity of Cagliari-CSGI and CNBS Cittadella Universitaria Monserrato 09042 Italy
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Dong H, Qiang Z, Lian J, Qu J. Promoted oxidation of diclofenac with ferrate (Fe(VI)): Role of ABTS as the electron shuttle. JOURNAL OF HAZARDOUS MATERIALS 2017; 336:65-70. [PMID: 28472710 DOI: 10.1016/j.jhazmat.2017.04.056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Revised: 04/20/2017] [Accepted: 04/21/2017] [Indexed: 06/07/2023]
Abstract
Reaction of Fe(VI) with 2,2'-azino-bis-(3-ethylbenzothiazoline -6-sulfonate) (ABTS) is widely adopted to determine aqueous ferrate (Fe(VI)) concentration based on ABTS+ formation. Interestingly, this study found that the addition of ABTS could accelerate the oxidation of diclofenac (DCF) by Fe(VI) significantly. Observed first-order rate constant of DCF in the presence of 30μM ABTS was found to be 36.2 folds of that without ABTS, with values of 3.08 and 0.085min-1, respectively. It was partly attributed to the formation of ABTS+. The apparent second-order rate constant (kapp) for the oxidation of ABTS by Fe(VI) at pH7.0 was determined to be 1.1×106M-1s-1, which was 3-5 orders of magnitude higher than those for the reactions of ABTS+ with DCF (kapp,ABTS+-DCF=2.8×103M-1s-1) and Fe(VI) with DCF (kapp,Fe(VI)-DCF=17.7M-1s-1). Both the kapp,Fe(VI)-ABTS and kapp,Fe(VI)-DCF decreased obviously with increasing pH, while the kapp,ABTS+-DCF exhibited little pH dependency. By acting as the electron shuttle, ABTS could enhance the removal efficiency of DCF over wide pH and natural organic matter concentration ranges. This study provides new insights to reconsider the role of organic matter during Fe(VI) oxidation and highlights the potential for increasing the reactivity of Fe(VI).
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Affiliation(s)
- Huiyu Dong
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences,18 Shuang-qing Road, Beijing 100085, China
| | - Zhimin Qiang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences,18 Shuang-qing Road, Beijing 100085, China.
| | - Junfeng Lian
- School of Architectural, Surveying and Mapping Engineering, Jiangxi University of Science and Technology,86 Hong-qi Road, Ganzhou 341000, China
| | - Jiuhui Qu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences,18 Shuang-qing Road, Beijing 100085, China
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Lebogang L, Jantra J, Hedström M, Mattiasson B. Electrochemical Flow-ELISA for Rapid and Sensitive Determination of Microcystin-LR Using Automated Sequential Injection System. SENSORS 2017; 17:s17071639. [PMID: 28714899 PMCID: PMC5539796 DOI: 10.3390/s17071639] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 06/30/2017] [Accepted: 07/05/2017] [Indexed: 11/16/2022]
Abstract
An amperometric immunoanalysis system based on monoclonal antibodies immobilized on Sepharose beads and packed into a micro-immunocolumn was developed for the quantification of microcystin-LR. Microcystin-LR (MCLR) was used as a reference microcystin variant. Inside the immunocolumn, free microcystins and microcystin-horseradish peroxidase (tracer) were sequentially captured by the immobilized antibodies, and the detection was performed electrochemically using Super AquaBlue ELISA substrate 2,2'-azinobis(3-ethylbenzothiazoline-sulfonic acid) (ABTS). The ABTS●+ generated by enzymatic oxidation of ABTS was electrochemically determined at a carbon working electrode by applying a reduction potential set at 0.4 V versus Ag/AgCl reference electrode. The peak current intensity was inversely proportional to the amount of analyte bound to the immunocolumn. The amperometric flow-ELISA system, which was automatically controlled through the CapSenzeTM (Lund, Sweden) computer software, enabled determination of MCLR as low as 0.01 µg/L. The assay time was very short (20 min for one assay cycle). In addition, the electrochemical signals were not significantly affected by possible interferences which could be present in the real samples. Along with the simplicity of automation, this makes the developed method a promising tool for use in water quality assessment.
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Affiliation(s)
- Lesedi Lebogang
- Department of Biotechnology, Lund University, Box 124, SE-22100 Lund, Sweden.
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Private Bag 16, Plot 10071, Palapye, Botswana.
| | - Jongjit Jantra
- Department of Biotechnology, Lund University, Box 124, SE-22100 Lund, Sweden.
- CapSenze Biosystems AB, Scheelevägen 22, SE-22363 Lund, Sweden.
| | - Martin Hedström
- Department of Biotechnology, Lund University, Box 124, SE-22100 Lund, Sweden.
- CapSenze Biosystems AB, Scheelevägen 22, SE-22363 Lund, Sweden.
| | - Bo Mattiasson
- Department of Biotechnology, Lund University, Box 124, SE-22100 Lund, Sweden.
- CapSenze Biosystems AB, Scheelevägen 22, SE-22363 Lund, Sweden.
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15
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Reappraising a Controversy: Formation and Role of the Azodication (ABTS2+) in the Laccase-ABTS Catalyzed Breakdown of Lignin. FERMENTATION-BASEL 2017. [DOI: 10.3390/fermentation3020027] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Goh SM, Chan MY, Ong LGA. Degradation potential of basidiomycetes Trametes ljubarskyion Reactive Violet 5 (RV 5) using urea as optimum nitrogen source. BIOTECHNOL BIOTEC EQ 2017. [DOI: 10.1080/13102818.2017.1334591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Sin Ming Goh
- Department of Chemical Sciences, Faculty of Science, Universiti Tunku Abdul Rahman, Kampar, Malaysia
| | - Mun Yee Chan
- Department of Chemical Sciences, Faculty of Science, Universiti Tunku Abdul Rahman, Kampar, Malaysia
| | - Lisa Gaik Ai Ong
- Department of Biological Sciences, Faculty of Science, Universiti Tunku Abdul Rahman, Kampar, Malaysia
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17
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A simple strategy for extracellular production of CotA laccase in Escherichia coli and decolorization of simulated textile effluent by recombinant laccase. Appl Microbiol Biotechnol 2016; 101:685-696. [DOI: 10.1007/s00253-016-7897-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/13/2016] [Accepted: 09/24/2016] [Indexed: 11/25/2022]
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18
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Graphene Facilitated Removal of Labetalol in Laccase-ABTS System: Reaction Efficiency, Pathways and Mechanism. Sci Rep 2016; 6:21396. [PMID: 26891761 PMCID: PMC4759553 DOI: 10.1038/srep21396] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 01/22/2016] [Indexed: 11/08/2022] Open
Abstract
The widespread occurrence of the beta-blocker labetalol causes environmental health concern. Enzymatic reactions are highly efficient and specific offering biochemical transformation of trace contaminants with short reaction time and little to none energy consumption. Our experiments indicate that labetalol can be effectively transformed by laccase-catalyzed reaction using 2, 2-Azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) as a mediator, while no significant removal of labetalol can be achieved in the absence of ABTS. A total of three products were identified. It is interesting that the presence of graphene greatly increased the reaction rate while not changed the products. In the presence of 100 μg/L graphene, the pseudo-first-order reaction rate constant was increased ~50 times. We found that the enhancement of graphene is probably attributed to the formation and releasing of ABTS2+ which has a much greater reactivity towards labetalol when graphene is present. This study provides fundamental information for laccase-ABTS mediated labetalol reactions and the effect of graphene, which could eventually lead to development of novel methods to control beta-blocker contamination.
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19
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Mao X, Liu S, Yang C, Liu F, Wang K, Chen G. Colorimetric detection of hepatitis B virus (HBV) DNA based on DNA-templated copper nanoclusters. Anal Chim Acta 2016; 909:101-8. [PMID: 26851090 DOI: 10.1016/j.aca.2016.01.009] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/31/2015] [Accepted: 01/03/2016] [Indexed: 12/18/2022]
Abstract
DNA detection plays an important role in early diagnosis of genetic disease. The conventional detection methods of DNA are based on expensive equipment, which do not meet the demands of developing countries. Thus, we developed a colorimetric method, which could be observed with naked eye and used copper nanoclusters for cost-effective. Moreover, the target of this method is the DNA in Hepatitis B virus that is one of the most popular chronic viral infections in developing countries over the past years. Our method was sensitive and the limit of detection was 12 × 10(9) molecules. Three-base-pair mismatches target DNA was detected easily. These results revealed the favorable sensitivity and selectivity of this approach. Most importantly, our method may have potential applications in correct diagnosis of genetic disease and monitoring of gene therapy in the poverty-stricken areas.
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Affiliation(s)
- Xiaoxia Mao
- Laboratory of Biosensing Technology, School of Life Sciences, Shanghai University, Shanghai 200444, China; Department of Life Science, Anqing Normal University, Anqing, Anhui 246011, China
| | - Siyu Liu
- Laboratory of Biosensing Technology, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Chao Yang
- Laboratory of Biosensing Technology, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Fengzhen Liu
- Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, China
| | - Keming Wang
- Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, China.
| | - Guifang Chen
- Laboratory of Biosensing Technology, School of Life Sciences, Shanghai University, Shanghai 200444, China.
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20
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Muthurasu A, Ganesh V. Glucose oxidase stabilized fluorescent gold nanoparticles as an ideal sensor matrix for dual mode sensing of glucose. RSC Adv 2016. [DOI: 10.1039/c5ra22477b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simple, facile and green route for the preparation of glucose oxidase stabilized simple Au NPs and fluorescent Au NPs for the dual mode bio-sensing application of glucose using colourimetric and electrochemical methods is demonstrated.
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Affiliation(s)
- A. Muthurasu
- Electrodics and Electrocatalysis (EEC) Division
- CSIR – Central Electrochemical Research Institute (CSIR – CECRI)
- Karaikudi-630003
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - V. Ganesh
- Electrodics and Electrocatalysis (EEC) Division
- CSIR – Central Electrochemical Research Institute (CSIR – CECRI)
- Karaikudi-630003
- India
- Academy of Scientific and Innovative Research (AcSIR)
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21
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Liu H, Zhou P, Wu X, Sun J, Chen S. Radical Scavenging by Acetone: A New Perspective to Understand Laccase/ABTS Inactivation and to Recover Redox Mediator. Molecules 2015; 20:19907-13. [PMID: 26556325 PMCID: PMC6332252 DOI: 10.3390/molecules201119672] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 10/27/2015] [Accepted: 10/28/2015] [Indexed: 12/02/2022] Open
Abstract
The biosynthetic utilization of laccase/mediator system is problematic because the use of organic cosolvent causes significant inhibition of laccase activity. This work explored how the organic cosolvent impacts on the laccase catalytic capacity towards 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) in aqueous solution. Effects of acetone on the kinetic constants of laccase were determined and the results showed Km and Vmax varied exponentially with increasing acetone content. Acetone as well as some other cosolvents could transform ABTS radicals into its reductive form. The content of acetone in media significantly affected the radical scavenging rates. Up to 95% of the oxidized ABTS was successfully recovered in 80% (v/v) acetone in 60 min. This allows ABTS to be recycled at least six times with 70%–75% of active radicals recovered after each cycle. This solvent-based recovery strategy may help improve the economic feasibility of laccase/ABTS system in biosynthesis.
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Affiliation(s)
- Hao Liu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Pandeng Zhou
- School of Chemistry and Environmental Engineering, Hunan City University, Yiyang 413000, China.
| | - Xing Wu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Jianliang Sun
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Shicheng Chen
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI 48824, USA.
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22
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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: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Demarche P, Junghanns C, Ardao I, Agathos SN. Dynamic measurement of oxidase activity based on oxygen consumption in open systems. Eng Life Sci 2015. [DOI: 10.1002/elsc.201500021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Philippe Demarche
- Earth and Life Institute-Laboratory of Bioengineering; Université Catholique de Louvain; Louvain-la-Neuve Belgium
| | - Charles Junghanns
- Earth and Life Institute-Laboratory of Bioengineering; Université Catholique de Louvain; Louvain-la-Neuve Belgium
- Helmholtz-Centre for Environmental Research - UFZ; Leipzig Germany
| | - Inés Ardao
- Earth and Life Institute-Laboratory of Bioengineering; Université Catholique de Louvain; Louvain-la-Neuve Belgium
| | - Spiros N. Agathos
- Earth and Life Institute-Laboratory of Bioengineering; Université Catholique de Louvain; Louvain-la-Neuve Belgium
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24
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Kochius S, Park JB, Ley C, Könst P, Hollmann F, Schrader J, Holtmann D. Electrochemical regeneration of oxidised nicotinamide cofactors in a scalable reactor. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2013.07.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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25
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Rivera-Hoyos CM, Morales-Álvarez ED, Poutou-Piñales RA, Pedroza-Rodríguez AM, RodrÍguez-Vázquez R, Delgado-Boada JM. Fungal laccases. FUNGAL BIOL REV 2013. [DOI: 10.1016/j.fbr.2013.07.001] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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26
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27
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Cardoso F, Aquino Neto S, Fenga P, Ciancaglini P, De andrade A. Electrochemical characterization of methanol/O2 biofuel cell: Use of laccase biocathode immobilized with polypyrrole film and PAMAM dendrimers. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2012.12.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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28
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Franssen MCR, Steunenberg P, Scott EL, Zuilhof H, Sanders JPM. Immobilised enzymes in biorenewables production. Chem Soc Rev 2013; 42:6491-533. [DOI: 10.1039/c3cs00004d] [Citation(s) in RCA: 196] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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29
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Virk SS, Baruah VJ, Goswami P. Giant vesicles as encapsulating matrix for stabilizing alcohol oxidase and as container for coupled enzymatic reactions. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2012; 41:255-8. [DOI: 10.3109/10731199.2012.731413] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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30
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Cho JH, Kim KM, Noh DY, Lee HI. Synthesis, Structure, and Peroxidase Activity of an Octahedral Ru(III) Complex with a Tripodal Tetraamine Ligand. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.11.3904] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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31
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Friest JA, Broussy S, Chung WJ, Berkowitz DB. Combinatorial catalysis employing a visible enzymatic beacon in real time: synthetically versatile (pseudo)halometalation/carbocyclizations. Angew Chem Int Ed Engl 2011; 50:8895-9. [PMID: 21905180 PMCID: PMC3517167 DOI: 10.1002/anie.201103365] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Indexed: 01/10/2023]
Affiliation(s)
- Jacob A. Friest
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588 (USA), Fax: (+001) 402-472-9402
| | - Sylvain Broussy
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588 (USA), Fax: (+001) 402-472-9402
| | - Woo Jin Chung
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588 (USA), Fax: (+001) 402-472-9402
| | - David B. Berkowitz
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588 (USA), Fax: (+001) 402-472-9402
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32
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Friest JA, Broussy S, Chung WJ, Berkowitz DB. Combinatorial Catalysis Employing a Visible Enzymatic Beacon in Real Time: Synthetically Versatile (Pseudo)Halometalation/Carbocyclizations. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103365] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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33
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Chan-Eam S, Teerasong S, Damwan K, Nacapricha D, Chaisuksant R. Sequential injection analysis with electrochemical detection as a tool for economic and rapid evaluation of total antioxidant capacity. Talanta 2011; 84:1350-4. [PMID: 21641450 DOI: 10.1016/j.talanta.2011.02.043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 02/18/2011] [Accepted: 02/25/2011] [Indexed: 10/18/2022]
Abstract
This work presents a new flow-based coupled electrochemical technique for evaluation of "total antioxidant capacity (TAC)". A sequential injection (SI) with amperometric detection was applied to the TAC analysis of commercial instant ginger infusion beverages using 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assay. Besides having chromogenic properties, the ABTS reagent behaves as an electroactive species at the glassy carbon electrode in phosphate buffer pH 7.0, the decrease of the cathodic current signal of the ABTS(+) radical after reaction with antioxidants can be monitored. The SI system, furnished with an in-house electrochemical detection cell (ECD), was optimized with respect to the applied potential, sample and reagent volume, and flow rate to the detector. Gallic acid was used as the standard antioxidant and the capacity was reported as gallic acid equivalent (GAE) unit. TAC measurements of ginger infusions at the optimum condition were performed using the proposed technique and also with the classical batch spectrophotometric ABTS assay. TAC values obtained from our method and the standard method are in good agreement (r(2)=0.956). The SI-amperometric technique provided satisfactory precision (4.11% RSD) with rapid sample throughput (40 samples h(-1)). Also using this method, the consumption of the expensive ABTS reagent was greatly reduced.
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Affiliation(s)
- S Chan-Eam
- Flow Innovation-Research for Science and Technology Laboratories (First Labs), Thailand
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34
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Di Fusco M, Favero G, Mazzei F. Polyazetidine-Coated Microelectrodes: Electrochemical and Diffusion Characterization of Different Redox Substrates. J Phys Chem B 2010; 115:972-9. [DOI: 10.1021/jp107153c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Massimo Di Fusco
- Dipartimento di Chimica e Tecnologie del Farmaco and ‡Dipartimento di Chimica, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Gabriele Favero
- Dipartimento di Chimica e Tecnologie del Farmaco and ‡Dipartimento di Chimica, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Franco Mazzei
- Dipartimento di Chimica e Tecnologie del Farmaco and ‡Dipartimento di Chimica, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
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35
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Habrioux A, Napporn T, Servat K, Tingry S, Kokoh K. Electrochemical characterization of adsorbed bilirubin oxidase on Vulcan XC 72R for the biocathode preparation in a glucose/O2 biofuel cell. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2009.09.080] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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36
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Cañas AI, Camarero S. Laccases and their natural mediators: biotechnological tools for sustainable eco-friendly processes. Biotechnol Adv 2010; 28:694-705. [PMID: 20471466 DOI: 10.1016/j.biotechadv.2010.05.002] [Citation(s) in RCA: 403] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2009] [Revised: 04/21/2010] [Accepted: 04/30/2010] [Indexed: 11/27/2022]
Abstract
Laccases are oxidoreductases which oxidize a variety of aromatic compounds using oxygen as the electron acceptor and producing water as by-product. The interest for these old enzymes (first described in 19th century) has progressively increased due to their outstanding biotechnological applicability. The presence of redox mediators is required for a number of biotechnological applications, providing the oxidation of complex substrates not oxidized by the enzyme alone. The efficiency of laccase-mediator systems to degrade recalcitrant compounds has been demonstrated, but still the high cost and possible toxicity of artificial mediators hamper their application at the industrial scale. Here, we present a general outlook of how alternative mediators can change this tendency. We focus on phenolic compounds related to lignin polymer that promotes the in vitro transformation of recalcitrant non-phenolic structures by laccase and are seemingly the natural mediators of laccases. The use of eco-friendly mediators easily available from lignocellulose, could contribute to the industrial implementation of laccases and the development of the 21th century biorefineries.
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Affiliation(s)
- Ana I Cañas
- Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, Madrid, Spain
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37
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Ang TN, Ngoh GC, Chua ASM. A quantitative method for fungal ligninolytic enzyme screening studies. ASIA-PAC J CHEM ENG 2010. [DOI: 10.1002/apj.451] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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38
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Privman V, Strack G, Solenov D, Pita M, Katz E. Optimization of Enzymatic Biochemical Logic for Noise Reduction and Scalability: How Many Biocomputing Gates Can Be Interconnected in a Circuit? J Phys Chem B 2008; 112:11777-84. [DOI: 10.1021/jp802673q] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vladimir Privman
- Department of Chemistry and Biomolecular Science and Department of Physics, Clarkson University, Potsdam, New York 13699
| | - Guinevere Strack
- Department of Chemistry and Biomolecular Science and Department of Physics, Clarkson University, Potsdam, New York 13699
| | - Dmitry Solenov
- Department of Chemistry and Biomolecular Science and Department of Physics, Clarkson University, Potsdam, New York 13699
| | - Marcos Pita
- Department of Chemistry and Biomolecular Science and Department of Physics, Clarkson University, Potsdam, New York 13699
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science and Department of Physics, Clarkson University, Potsdam, New York 13699
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39
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Niladevi KN, Sheejadevi PS, Prema P. Strategies for enhancing laccase yield from Streptomyces psammoticus and its role in mediator-based decolorization of azo dyes. Appl Biochem Biotechnol 2008; 151:9-19. [PMID: 18473186 DOI: 10.1007/s12010-008-8175-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2007] [Accepted: 02/04/2008] [Indexed: 11/27/2022]
Abstract
Enhanced production of laccases from Streptomyces psammoticus in solid-state fermentation was carried out using two different strategies: laccase inducers and scale-up process. Laccase yield was enhanced by a wide range of aromatic inducers. The best inducer was pyrogallol, which yielded 116 U/g as compared to the control (55.4 U/g). Scale-up studies in packed bed bioreactor was performed at different aeration rates. Aeration at 1.5 vvm was identified as the optimum condition for laccase production (75.4 U/g) in the column bioreactor. The enzyme yield was enhanced further by combining the best conditions from the first two experiments. Fermentation was carried out in bioreactors in the presence of 1 mM pyrogallol, which resulted in 3.9-fold increase in laccase yield (215.6 U/g). The role of laccase in azo dye decolorization was evaluated in the presence of four different laccase mediators, at different concentrations. 1-Hydroxybenzotriazole (HOBT) proved to be the best mediator for S. psammoticus laccase and decolorized the azo dyes efficiently. Acid orange, Methyl orange, and Bismarck brown were decolorized at the rates of 86%, 71%, and 75% respectively, by HOBT.
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Affiliation(s)
- K N Niladevi
- Biotechnology Division, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum, 695019, India
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40
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Marjasvaara A, Jänis J, Vainiotalo P. Oxidation of a laccase mediator ABTS as studied by ESI-FTICR mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2008; 43:470-477. [PMID: 17975855 DOI: 10.1002/jms.1332] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The oxidation reaction of a laccase mediator ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) was studied by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI-FTICRMS). Oxidation products of ABTS were measured after reaction times that varied from a few minutes up to several days and both positive and negative ionization modes were employed. Exact mass measurements and collision-induced dissociation (CID) experiments were used to characterize the structures of the ions formed. After reacting with Trametes versicolor laccase (TvL), the radical cation form of ABTS was the main product observed by the positive ionization mode. Negative ionization mode experiments revealed that a degradation product from ABTS was formed.
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Affiliation(s)
- Asse Marjasvaara
- University of Joensuu, Department of Chemistry, P.O. Box 111, FI-80101 Joensuu, Finland
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41
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Szot K, Niedziolka J, Rogalski J, Marken F, Opallo M. Bioelectrocatalytic dioxygen reduction at hybrid silicate–polyallylamine film with encapsulated laccase. J Electroanal Chem (Lausanne) 2008. [DOI: 10.1016/j.jelechem.2007.08.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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42
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Floch C, Alarcon-Gutiérrez E, Criquet S. ABTS assay of phenol oxidase activity in soil. J Microbiol Methods 2007; 71:319-24. [DOI: 10.1016/j.mimet.2007.09.020] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2007] [Revised: 09/12/2007] [Accepted: 09/21/2007] [Indexed: 10/22/2022]
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43
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Morozova OV, Shumakovich GP, Shleev SV, Yaropolov YI. Laccase-mediator systems and their applications: A review. APPL BIOCHEM MICRO+ 2007. [DOI: 10.1134/s0003683807050055] [Citation(s) in RCA: 378] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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44
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Nogala W, Rozniecka E, Zawisza I, Rogalski J, Opallo M. Immobilization of ABTS – laccase system in silicate based electrode for biolectrocatalytic reduction of dioxygen. Electrochem commun 2006. [DOI: 10.1016/j.elecom.2006.08.024] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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45
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Hanko M, Bruns N, Tiller JC, Heinze J. Optical biochemical sensor for determining hydroperoxides in nonpolar organic liquids as archetype for sensors consisting of amphiphilic conetworks as immobilisation matrices. Anal Bioanal Chem 2006; 386:1273-83. [PMID: 17019582 DOI: 10.1007/s00216-006-0680-2] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2006] [Revised: 06/26/2006] [Accepted: 07/14/2006] [Indexed: 10/24/2022]
Abstract
This paper reports the successful design of a prototype of an optical biochemical sensor for the determination of hydroperoxides in nonpolar organic liquids. The sensor consists of a matrix of an amphiphilic polymer conetwork (APCN), a novel class of very promising polymeric materials for easy preparation of biochemical sensor matrices. APCNs are characterised by nanoscopic phase separation between the hydrophilic and the hydrophobic phases. For medium ratios of conetwork composition, the domains of both phases are interconnected both on the surface of the conetworks and throughout the bulk. The APCNs have peculiar swelling properties-the hydrophilic phase swells in hydrophilic media and the hydrophobic phase swells in hydrophobic media. In both types of media dissolved reagents can diffuse from the solution into the swollen phase of the polymeric conetwork. This enables loading of the hydrophilic phase of the APCNs with enzymes and indicator reagents by simple impregnation. Hydrophobic analytes can diffuse into the polymeric conetwork via its hydrophobic phase and react with indicator reagents immobilised in the hydrophilic phase at the huge internal interface between the two opposite phases.To prepare the described hydroperoxide-sensitive biosensors, we used APCN films consisting of 58% (w/w) poly(2-hydroxyethyl acrylate) (PHEA) as hydrophilic chains and 42% (w/w) polydimethylsiloxane (PDMS) as hydrophobic linkers. Horseradish peroxidase (HRP) and diammonium 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) as indicator reagent were co-immobilised in this optically clear and transparent matrix. In this feasibility study the conditions investigated were principally those relevant to characterisation of the innovative matrix material and the disposable biosensor produced from it; the biosensor was not optimised. Sensitivity toward tert-butylhydroperoxide (tBuOOH) dissolved in n-heptane was acceptable, between approximately 1 and at least 50 mmol L(-1), even in the dry state. The response time was 1.7 to 5.0 min. No leaching of immobilised reagents was observed during a period of at least one hour. Pre-swelling the sensors with water increased the reaction rate and the total turnover number of the enzyme. In a dry atmosphere at 4 degrees C the sensors were found to be stable for at least two weeks.
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Affiliation(s)
- Michael Hanko
- Freiburg Materials Research Centre (FMF), Institute of Physical Chemistry, Albert-Ludwigs-University Freiburg, Stefan-Meier-Strasse 21, 79104 Freiburg, Germany
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Hanko M, Bruns N, Rentmeister S, Tiller JC, Heinze J. Nanophase-Separated Amphiphilic Conetworks as Versatile Matrixes for Optical Chemical and Biochemical Sensors. Anal Chem 2006; 78:6376-83. [PMID: 16970311 DOI: 10.1021/ac060634+] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
As a novel class of sensor matrixes, nanophase-separated amphiphilic polymeric conetworks (APCNs) open a new dimension for optical chemical and biochemical sensing. These conetworks consist of a hydrophilic phase-we used poly(2-hydroxyethyl acrylate), poly(2-(dimethylamino)ethyl acrylate), or polycationic poly(2-(trimethylammonium)ethyl acrylate)-and of a hydrophobic phase-poly(dimethylsiloxane). Sensors can be prepared by simple impregnation of the matrix. Due to nanophase separation, there is a spatial separation between areas in which the indicator reagents are well immobilized and areas that advantageously take care of the diffusive transport of the analyte, whereby these functionalities of the contrary phases can be exchanged. Thanks to the huge interface between the contrary phases, the accessibility of the indicator reagents is good, which makes it possible to design sensors with high sensitivity. To demonstrate the advantages of APCNs as matrixes, different prototypes of sensors were prepared, e.g., one to determine gaseous chlorine based on its reaction with immobilized o-tolidine and another to determine vaporous acids based on immobilized bromophenol blue dianions. As a breakthrough in biochemical sensing, we are also able to present an easily producible, optically transparent biochemical sensor to determine peroxides in nonpolar organic media-based on coimmobilized horseradish peroxidase and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate).
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Affiliation(s)
- Michael Hanko
- Freiburg Materials Research Center (FMF), Institute of Physical Chemistry, Albert-Ludwigs-University Freiburg, Stefan-Meier-Strasse 21, 79104 Freiburg, Germany
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Electrocatalytic reduction of dioxygen by redox mediator and laccase immobilized in silicate thin film. J Electroanal Chem (Lausanne) 2006. [DOI: 10.1016/j.jelechem.2005.12.030] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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