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Buyukharman M, Mulazimoglu IE, Yildiz HB. Construction of a Conductive Polymer/AuNP/Cyanobacteria-Based Biophotovoltaic Cell Harnessing Solar Energy to Generate Electricity via Photosynthesis and Its Usage as a Photoelectrochemical Pesticide Biosensor: Atrazine as a Case Study. ACS OMEGA 2024; 9:16249-16261. [PMID: 38617620 PMCID: PMC11007689 DOI: 10.1021/acsomega.3c10308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 02/06/2024] [Accepted: 03/12/2024] [Indexed: 04/16/2024]
Abstract
In this research, a cyanobacteria (Leptolyngbia sp.)-based biological photovoltaic cell (BPV) was designed. This clean energy-friendly BPV produced a photocurrent as a result of illuminating the photoanode and cathode electrodes immersed in the aqueous medium with solar energy. For this purpose, both electrodes were first coated with conductive polymers with aniline functional groups on the gold electrodes. In the cell, the photoanode was first coated with a gold-modified poly 4-(2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)benzamine polymer, P(SNS-Aniline). Thioaniline-functionalized gold nanoparticles were used to provide a cross-link formation with bis-aniline conductive bonds with the conductive polymer using electrochemical techniques. Leptolyngbia sp., one of the cyanobacteria that can convert light energy into chemical energy, was attached to this layered electrode surface. The cathode of the cell was attached to the gold electrode surface with P(SNS-Aniline). Then, the bilirubin oxidase (BOx) enzyme was immobilized on this film surface with glutaraldehyde activation. This cell, which can use light, thanks to cyanobacteria, oxidized and split water, and oxygen was obtained at the photoanode electrode. At the cathode electrode, the oxygen gas was reduced to water by the bioelectrocatalytic method. To obtain a high photocurrent from the BPV, necessary optimizations were made during the design of the system to increase electron transport and strengthen its transfer. While the photocurrent value obtained with the designed BPV in optimum conditions and in the pseudosteady state was 10 mA/m2, the maximum power value obtained was 46.5 mW/m2. In addition to storing the light energy of the system, studies have been carried out on this system as a pesticide biosensor. Atrazine biosensing via the BPV system was analytically characterized between 0.1 and 1.2 μM concentrations for atrazine, and a very low detection limit was found as 0.024 μM. In addition, response time and recovery studies related to pesticide biosensor properties of the BPV were also investigated.
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Affiliation(s)
- Mustafa Buyukharman
- Department of Physics, Faculty of Science, Istanbul University, TR-34134 Istanbul, Turkey
| | - Ibrahim Ender Mulazimoglu
- Department of Chemistry, Ahmet Kelesoglu Education Faculty, Necmettin Erbakan University, TR-42090 Konya, Turkey
| | - Huseyin Bekir Yildiz
- Department of Mechanical Engineering, Faculty of Engineering Architecture and Design, Bartin University, TR-74100 Bartin, Turkey
- Photo-Electrochemical Systems and Materials Research Group, The Central Research Laboratory-Research and Application Center, Bartin University, TR-74100 Bartin, Turkey
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Hennig TB, Bandeira FO, Puerari RC, Fraceto LF, Matias WG. A systematic review of the toxic effects of a nanopesticide on non-target organisms: Estimation of protective concentrations using a species sensitivity distribution (SSD) approach - The case of atrazine. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 871:162094. [PMID: 36764548 DOI: 10.1016/j.scitotenv.2023.162094] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/01/2023] [Accepted: 02/04/2023] [Indexed: 06/18/2023]
Abstract
Nanopesticides, such as nanoencapsulated atrazine (nATZ), have been studied and developed as eco-friendly alternatives to control weeds in fields, requiring lower doses. This review contains a historical and systematic literature review about the toxicity of nATZ to non-target species. In addition, the study establishes protective concentrations for non-target organisms through a species sensitivity distribution (SSD) approach. Through the systematic search, we identified 3197 publications. Of these, 14 studies addressed "(nano)atrazine's toxicity to non-target organisms". Chronological and geographic data on the publication of articles, characterization of nATZ (type of nanocarrier, size, polydispersity index, zeta potential), experimental design (test species, exposure time, measurements, methodology, tested concentrations), and toxic effects are summarized and discussed. The data indicate that cell and algal models do not show sensitivity to nATZ, while many terrestrial and aquatic invertebrates, aquatic vertebrates, microorganisms, and plants have high sensitivity to nAZT. The SSD results indicated that D. similis is the most sensitive species to nATZ, followed by C. elegans, E. crypticus, and P. subcapitata. However, the limitations in terms of the number of species and endpoints available to elaborate the SSD reflect gaps in knowledge of the effects of nATZ on different ecosystems.
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Affiliation(s)
- Thuanne Braúlio Hennig
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC 88040-970, Brazil
| | - Felipe Ogliari Bandeira
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC 88040-970, Brazil
| | - Rodrigo Costa Puerari
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC 88040-970, Brazil
| | - Leonardo Fernandes Fraceto
- Department of Environmental Engineering, Institute of Science and Technology of Sorocaba, São Paulo State University, Av. Três de Março, 18087-180 Sorocaba, SP, Brazil
| | - William Gerson Matias
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC 88040-970, Brazil.
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Pan QF, Jiao HF, Liu H, You JJ, Sun AL, Zhang ZM, Shi XZ. Highly selective molecularly imprinted-electrochemiluminescence sensor based on perovskite/Ru(bpy) 32+ for simazine detection in aquatic products. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 843:156925. [PMID: 35753451 DOI: 10.1016/j.scitotenv.2022.156925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/19/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
A novel molecularly imprinted electrochemiluminescence (MIECL) sensor based on the luminescence of molecularly imprinted polymer-perovskite (MIP-CsPbBr3) layer and Ru(bpy)32+ was fabricated for simazine detection. MIP-CsPbBr3 layers were immobilized onto the surface of glassy carbon electrode as the capture and signal amplification probe, and Ru(bpy)32+ and co-reactant tripropylamine exhibited stronger electrochemiluminescence (ECL) emission. Under optimal conditions, the ECL signal of the MIECL sensor was linearly quenched, with the logarithm of simazine concentration ranging from 0.1 μg/L to 500.0 μg/L, correlation coefficient of 0.9947, and limit of detection of 0.06 μg/L. The practicality of the developed MIECL sensor method for simazine determination in aquatic samples was validated. Excellent recoveries of 86.5 %-103.9 % with relative standard deviation below 1.6 % were obtained for fish and shrimp samples at three different spiked concentrations. The MIECL sensor exhibited excellent selectivity, sensitivity, reproducibility, accuracy, and precision for simazine determination in actual aquatic samples.
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Affiliation(s)
- Qiao-Fen Pan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China; College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, PR China
| | - Hai-Feng Jiao
- College of Biological and Environment Science, Zhejiang Wanli University, Ningbo 315100, PR China
| | - Hua Liu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China.
| | - Jin-Jie You
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China; College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, PR China
| | - Ai-Li Sun
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Ze-Ming Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Xi-Zhi Shi
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China.
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4
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Pesticide Detection in Vegetable Crops Using Enzyme Inhibition Methods: a Comprehensive Review. FOOD ANAL METHOD 2022. [DOI: 10.1007/s12161-022-02254-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Forini MML, Antunes DR, Cavalcante LAF, Pontes MS, Biscalchim ÉR, Sanches AO, Santiago EF, Fraceto LF, Grillo R. Fabrication and Characterization of a Novel Herbicide Delivery System with Magnetic Collectability and Its Phytotoxic Effect on Photosystem II of Aquatic Macrophyte. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:11105-11113. [PMID: 32915575 DOI: 10.1021/acs.jafc.0c03645] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The use of nano- and microparticles as a release system for agrochemicals has been increasing in agricultural sector. However, the production of eco-friendly and smart carriers that can be easily handled in the environment is still a challenge for this technology. In this context, we have developed a biodegradable release system for the herbicide atrazine with magnetic properties. Herein, we investigated the (a) physicochemical properties of the atrazine-loaded magnetic poly(ε-caprolactone) microparticles (MPs:ATZ), (b) in vitro release kinetic profile of the herbicide, and (c) phytotoxicity toward photosynthesis in the aquatic fern Azolla caroliniana. The encapsulation efficiency of the herbicide in the MPs:ATZ was ca. 69%, yielding spherical microparticles with a diameter of ca. 100 μm, a sustained-release profile, and easily manipulated with an external magnetic field. Also, phytotoxicity issues showed that the MPs:ATZ maintained their herbicidal activity via inhibition of PSII, showing lower toxicity compared with the nonencapsulated ATZ at 0.01 and 0.02 μmol·L-1. Therefore, this technology may conveniently promote a novel magnetic controlled release of the herbicide ATZ (with the potential to be collected from a watercourse) and act as a nutrient boost to the nontarget plant, with good herbicidal activity and reduced risk to the environment.
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Affiliation(s)
- Mariana M L Forini
- Department of Physics and Chemistry, School of Engineering, São Paulo State University (UNESP), Ilha Solteira, SP 15385-000, Brazil
| | - Débora R Antunes
- Department of Physics and Chemistry, School of Engineering, São Paulo State University (UNESP), Ilha Solteira, SP 15385-000, Brazil
| | - Luiz A F Cavalcante
- Department of Physics and Chemistry, School of Engineering, São Paulo State University (UNESP), Ilha Solteira, SP 15385-000, Brazil
| | - Montcharles S Pontes
- Natural Resources Program, Center for Natural Resources Studies (CERNA), Mato Grosso do Sul State University (UEMS), Dourados, Mato Grosso do Sul 79804-970, Brazil
| | - Érica R Biscalchim
- Department of Physics and Chemistry, School of Engineering, São Paulo State University (UNESP), Ilha Solteira, SP 15385-000, Brazil
| | - Alex O Sanches
- Department of Physics and Chemistry, School of Engineering, São Paulo State University (UNESP), Ilha Solteira, SP 15385-000, Brazil
| | - Etenaldo F Santiago
- Natural Resources Program, Center for Natural Resources Studies (CERNA), Mato Grosso do Sul State University (UEMS), Dourados, Mato Grosso do Sul 79804-970, Brazil
| | - Leonardo F Fraceto
- Department of Environmental Engineering, Institute of Science and Technology (ICTS), São Paulo State University (UNESP), Sorocaba, SP 18087-180, Brazil
| | - Renato Grillo
- Department of Physics and Chemistry, School of Engineering, São Paulo State University (UNESP), Ilha Solteira, SP 15385-000, Brazil
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Attaallah R, Antonacci A, Mazzaracchio V, Moscone D, Palleschi G, Arduini F, Amine A, Scognamiglio V. Carbon black nanoparticles to sense algae oxygen evolution for herbicides detection: Atrazine as a case study. Biosens Bioelectron 2020; 159:112203. [PMID: 32364935 DOI: 10.1016/j.bios.2020.112203] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 03/30/2020] [Accepted: 04/07/2020] [Indexed: 11/28/2022]
Abstract
A novel amperometric algae-based biosensor was developed for the detection of photosynthetic herbicides in river water. The green photosynthetic algae Chlamydomonas reinhardtii was immobilized on carbon black modified screen-printed electrodes, exploiting carbon black as smart nanomaterial to monitor changes in algae oxygen evolution during the photosynthetic process. The decrease of oxygen evolution, occurring in the presence of herbicides, results in a decrease of current signals by means of amperometric measurements, in an analyte concentration dependent manner. Atrazine as case study herbicide was detected in a concentration range of 0.1 and 50 μM, with a linear range from 0.1 to 5 μM and a detection limit of 1 nM. No interference was observed in presence of 100 ppb arsenic, 20 ppb copper, 5 ppb cadmium, 10 ppb lead, 10 ppb bisphenol A, and 1 ppb paraoxon, tested as safety limits. A ~25% matrix effect and satisfactory recovery values of 107 ± 10% and 96 ± 8% were obtained in river water for 3 and 5 μM of atrazine, respectively. Stability studies were also performed obtaining a high working stability up to 10 h and repeatability with an RSD of 1.1% (n = 12), as well as a good storage stability up to 3 weeks.
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Affiliation(s)
- Raouia Attaallah
- Faculty of Sciences and Techniques, Hassan II University of Casablanca, Morocco
| | - Amina Antonacci
- Institute of Crystallography (IC-CNR), Department of Chemical Sciences and Materials Technologies, Via Salaria km 29.300, 00015, Monterotondo, Italy
| | - Vincenzo Mazzaracchio
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Danila Moscone
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Giuseppe Palleschi
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Fabiana Arduini
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via della Ricerca Scientifica, 00133, Rome, Italy; SENSE4MED, via Renato Rascel 30, 00128, Rome, Italy
| | - Aziz Amine
- Faculty of Sciences and Techniques, Hassan II University of Casablanca, Morocco
| | - Viviana Scognamiglio
- Institute of Crystallography (IC-CNR), Department of Chemical Sciences and Materials Technologies, Via Salaria km 29.300, 00015, Monterotondo, Italy.
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Morales Castaño DF, Cano Quintero JB, Londoño Ospina NDJ. Red inalámbrica de biosensores enzimáticos para la detección de contaminantes en aguas. REVISTA POLITÉCNICA 2019. [DOI: 10.33571/rpolitec.v15n29a1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
En este artículo se presenta el desarrollo de una red inalámbrica de biosensores amperimétricos, que podrá ser distribuida en las fuentes de agua potable, con el fin de alertar sobre la presencia de contaminantes tóxicos. Este sistema no reemplazará los métodos tradicionales para la detección de contaminantes, pero tiene la ventaja de ser un sistema de bajo costo, ideal para aplicaciones en campo y donde sea necesario el procesamiento de una gran cantidad de muestras. Se presentan resultados del desarrollo de los circuitos electrónicos necesarios para la transducción amperométrica, los circuitos para el procesamiento de datos y la comunicación inalámbrica.
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Scognamiglio V, Antonacci A, Arduini F, Moscone D, Campos EVR, Fraceto LF, Palleschi G. An eco-designed paper-based algal biosensor for nanoformulated herbicide optical detection. JOURNAL OF HAZARDOUS MATERIALS 2019; 373:483-492. [PMID: 30947038 DOI: 10.1016/j.jhazmat.2019.03.082] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 02/20/2019] [Accepted: 03/18/2019] [Indexed: 05/23/2023]
Abstract
In this study we reported the development of a paper-based algal biosensor for the optical detection of nanoencapsulated-atrazine, a forefront nanoformulated herbicide with a high effective post-emergence herbicidal activity. In particular, the unicellular green photosynthetic algae Chlamydomonas reinhardtii was immobilised on a paper substrate soaked with an agar thin film and placed in a glass optical measurement cell, obtaining a totally environmental-friendly device. Nanoencapsulated-atrazine was detected by following the variable fluorescence (1-VJ) parameter, which decreased inversely proportional to the herbicide concentrations, in a range between 0.5 and 200 nM, indicating a linear relationship in the measured dose-response curves and a detection limit of 4 pM. Interference studies resulted in a very slight interference in presence of 2 ppm copper and 10 ppb arsenic at safety limits, as well as a slight matrix effect and a satisfactory recovery value of 96 ± 5% for 75 nM nanoencapsulated-atrazine in tap water. Stability studies were also performed obtaining a good storage stability up to 3 weeks. Results demonstrated the suitability of the proposed paper-based optical biosensor as a valid support in smart agriculture for on site, environmental friendly, cost effective and sensitive nanoencapsulated-atrazine analysis.
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Affiliation(s)
- Viviana Scognamiglio
- Institute of Crystallography, National Research Council, Department of Chemical Sciences and Materials Technologies, Via Salaria Km 29.3, 00015, Monterotondo Scalo, Rome, Italy.
| | - Amina Antonacci
- Institute of Crystallography, National Research Council, Department of Chemical Sciences and Materials Technologies, Via Salaria Km 29.3, 00015, Monterotondo Scalo, Rome, Italy
| | - Fabiana Arduini
- Department of Chemical Science and Technologies, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Danila Moscone
- Department of Chemical Science and Technologies, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Estefania V R Campos
- São Paulo State University (UNESP), Institute of Science and Technology of Sorocaba, Laboratory of Environmental Nanotechnology, Av. Três de Março, 511 - CEP 18-087-180, Sorocaba, Brazil
| | - Leonardo F Fraceto
- São Paulo State University (UNESP), Institute of Science and Technology of Sorocaba, Laboratory of Environmental Nanotechnology, Av. Três de Março, 511 - CEP 18-087-180, Sorocaba, Brazil
| | - Giuseppe Palleschi
- Department of Chemical Science and Technologies, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Rome, Italy
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Bucur B, Munteanu FD, Marty JL, Vasilescu A. Advances in Enzyme-Based Biosensors for Pesticide Detection. BIOSENSORS 2018; 8:E27. [PMID: 29565810 PMCID: PMC6022933 DOI: 10.3390/bios8020027] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 03/18/2018] [Accepted: 03/20/2018] [Indexed: 01/10/2023]
Abstract
The intensive use of toxic and remanent pesticides in agriculture has prompted research into novel performant, yet cost-effective and fast analytical tools to control the pesticide residue levels in the environment and food. In this context, biosensors based on enzyme inhibition have been proposed as adequate analytical devices with the added advantage of using the toxicity of pesticides for detection purposes, being more "biologically relevant" than standard chromatographic methods. This review proposes an overview of recent advances in the development of biosensors exploiting the inhibition of cholinesterases, photosynthetic system II, alkaline phosphatase, cytochrome P450A1, peroxidase, tyrosinase, laccase, urease, and aldehyde dehydrogenase. While various strategies have been employed to detect pesticides from different classes (organophosphates, carbamates, dithiocarbamates, triazines, phenylureas, diazines, or phenols), the number of practical applications and the variety of environmental and food samples tested remains limited. Recent advances focus on enhancing the sensitivity and selectivity by using nanomaterials in the sensor assembly and novel mutant enzymes in array-type sensor formats in combination with chemometric methods for data analysis. The progress in the development of solar cells enriched the possibilities for efficient wiring of photosynthetic enzymes on different surfaces, opening new avenues for development of biosensors for photosynthesis-inhibiting herbicides.
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Affiliation(s)
- Bogdan Bucur
- National Institute of Research and Development for Biological Sciences, Centre of Bioanalysis, 296 Splaiul Independentei, 060031 Bucharest, Romania.
| | - Florentina-Daniela Munteanu
- Faculty of Food Engineering, Tourism and Environmental Protection, "Aurel Vlaicu" University of Arad, Elena Dragoi, No. 2, 310330 Arad, Romania.
| | - Jean-Louis Marty
- BAE Laboratory, Université de Perpignan via Domitia, 52 Avenue Paul Alduy, 66860 Perpignan, France.
| | - Alina Vasilescu
- International Centre of Biodynamics, 1B Intrarea Portocalelor, 060101 Bucharest, Romania.
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Scognamiglio V, Antonacci A, Lambreva MD, Arduini F, Palleschi G, Litescu SC, Johanningmeier U, Rea G. Application of Biosensors for Food Analysis. Food Saf (Tokyo) 2016. [DOI: 10.1002/9781119160588.ch11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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11
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Scognamiglio V, Antonacci A, Patrolecco L, Lambreva MD, Litescu SC, Ghuge SA, Rea G. Analytical tools monitoring endocrine disrupting chemicals. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.04.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Scognamiglio V, Arduini F, Palleschi G, Rea G. Biosensing technology for sustainable food safety. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.07.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Photosystem II based multilayers obtained by electrostatic layer-by-layer assembly on quartz substrates. J Bioenerg Biomembr 2014; 46:221-8. [DOI: 10.1007/s10863-014-9544-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 02/06/2014] [Indexed: 10/25/2022]
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Lavecchia T, Rea G, Antonacci A, Giardi MT. Healthy and adverse effects of plant-derived functional metabolites: the need of revealing their content and bioactivity in a complex food matrix. Crit Rev Food Sci Nutr 2013; 53:198-213. [PMID: 23072533 PMCID: PMC3662084 DOI: 10.1080/10408398.2010.520829] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In recent years, both food quality and its effect on human health have become a fundamental issue all over the world. As a consequence of this new and increased awareness, American, European, and Asian policymakers have strongly encouraged the research programs on food quality and safety thematic. Attempts to improve human health and to satisfy people's desire for healthcare without intake of pharmaceuticals, has led the food industry to focus attention on functional or nutraceutical food. For a long time, compounds with nutraceutical activity have been produced chemically, but the new demands for a sustainable life have gradually led the food industry to move towards natural compounds, mainly those derived from plants. Many phytochemicals are known to promote good health, but, sometimes, undesirable effects are also reported. Furthermore, several products present on the market show few benefits and sometimes even the reverse - unhealthy effects; the evidence of efficacy is often unconvincing and epidemiological studies are necessary to prove the truth of their claims. Therefore, there is a need for reliable analytical control systems to measure the bioactivity, content, and quality of these additives in the complex food matrix. This review describes the most widespread nutraceutics and an analytical control of the same using recently developed biosensors which are promising candidates for routine control of functional foods.
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Scognamiglio V, Pezzotti I, Pezzotti G, Cano J, Manfredonia I, Buonasera K, Arduini F, Moscone D, Palleschi G, Giardi MT. Towards an integrated biosensor array for simultaneous and rapid multi-analysis of endocrine disrupting chemicals. Anal Chim Acta 2012; 751:161-70. [DOI: 10.1016/j.aca.2012.09.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 09/06/2012] [Accepted: 09/07/2012] [Indexed: 10/27/2022]
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16
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Pasco NF, Weld RJ, Hay JM, Gooneratne R. Development and applications of whole cell biosensors for ecotoxicity testing. Anal Bioanal Chem 2011; 400:931-45. [DOI: 10.1007/s00216-011-4663-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Revised: 12/22/2010] [Accepted: 01/03/2011] [Indexed: 10/18/2022]
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Rea G, Lambreva M, Polticelli F, Bertalan I, Antonacci A, Pastorelli S, Damasso M, Johanningmeier U, Giardi MT. Directed evolution and in silico analysis of reaction centre proteins reveal molecular signatures of photosynthesis adaptation to radiation pressure. PLoS One 2011; 6:e16216. [PMID: 21249156 PMCID: PMC3020971 DOI: 10.1371/journal.pone.0016216] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Accepted: 12/15/2010] [Indexed: 11/18/2022] Open
Abstract
Evolutionary mechanisms adopted by the photosynthetic apparatus to modifications in the Earth's atmosphere on a geological time-scale remain a focus of intense research. The photosynthetic machinery has had to cope with continuously changing environmental conditions and particularly with the complex ionizing radiation emitted by solar flares. The photosynthetic D1 protein, being the site of electron tunneling-mediated charge separation and solar energy transduction, is a hot spot for the generation of radiation-induced radical injuries. We explored the possibility to produce D1 variants tolerant to ionizing radiation in Chlamydomonas reinhardtii and clarified the effect of radiation-induced oxidative damage on the photosynthetic proteins evolution. In vitro directed evolution strategies targeted at the D1 protein were adopted to create libraries of chlamydomonas random mutants, subsequently selected by exposures to radical-generating proton or neutron sources. The common trend observed in the D1 aminoacidic substitutions was the replacement of less polar by more polar amino acids. The applied selection pressure forced replacement of residues more sensitive to oxidative damage with less sensitive ones, suggesting that ionizing radiation may have been one of the driving forces in the evolution of the eukaryotic photosynthetic apparatus. A set of the identified aminoacidic substitutions, close to the secondary plastoquinone binding niche and oxygen evolving complex, were introduced by site-directed mutagenesis in un-transformed strains, and their sensitivity to free radicals attack analyzed. Mutants displayed reduced electron transport efficiency in physiological conditions, and increased photosynthetic performance stability and oxygen evolution capacity in stressful high-light conditions. Finally, comparative in silico analyses of D1 aminoacidic sequences of organisms differently located in the evolution chain, revealed a higher ratio of residues more sensitive to oxidative damage in the eukaryotic/cyanobacterial proteins compared to their bacterial orthologs. These results led us to hypothesize an archaean atmosphere less challenging in terms of ionizing radiation than the present one.
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Affiliation(s)
- Giuseppina Rea
- Institute of Crystallography, National Research Council, Monterotondo, Italy.
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18
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Biosensors for effective environmental and agrifood protection and commercialization: from research to market. Mikrochim Acta 2010. [DOI: 10.1007/s00604-010-0313-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Rea G, Polticelli F, Antonacci A, Scognamiglio V, Katiyar P, Kulkarni SA, Johanningmeier U, Giardi MT. Structure-based design of novel Chlamydomonas reinhardtii D1-D2 photosynthetic proteins for herbicide monitoring. Protein Sci 2009; 18:2139-51. [PMID: 19693932 PMCID: PMC2786977 DOI: 10.1002/pro.228] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2009] [Revised: 07/23/2009] [Accepted: 08/11/2009] [Indexed: 11/07/2022]
Abstract
The D1-D2 heterodimer in the reaction center core of phototrophs binds the redox plastoquinone cofactors, Q(A) and Q(B), the terminal acceptors of the photosynthetic electron transfer chain in the photosystem II (PSII). This complex is the target of the herbicide atrazine, an environmental pollutant competitive inhibitor of Q(B) binding, and consequently it represents an excellent biomediator to develop biosensors for pollutant monitoring in ecosystems. In this context, we have undertaken a study of the Chlamydomonas reinhardtii D1-D2 proteins aimed at designing site directed mutants with increased affinity for atrazine. The three-dimensional structure of the D1 and D2 proteins from C. reinhardtii has been homology modeled using the crystal structure of the highly homologous Thermosynechococcus elongatus proteins as templates. Mutants of D1 and D2 were then generated in silico and the atrazine binding affinity of the mutant proteins has been calculated to predict mutations able to increase PSII affinity for atrazine. The computational approach has been validated through comparison with available experimental data and production and characterization of one of the predicted mutants. The latter analyses indicated an increase of one order of magnitude of the mutant sensitivity and affinity for atrazine as compared to the control strain. Finally, D1-D2 heterodimer mutants were designed and selected which, according to our model, increase atrazine binding affinity by up to 20 kcal/mol, representing useful starting points for the development of high affinity biosensors for atrazine.
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Affiliation(s)
- Giuseppina Rea
- Institute of Crystallography, Monterotondo Stazione, Rome, Italy.
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Giardi MT, Scognamiglio V, Rea G, Rodio G, Antonacci A, Lambreva M, Pezzotti G, Johanningmeier U. Optical biosensors for environmental monitoring based on computational and biotechnological tools for engineering the photosynthetic D1 protein of Chlamydomonas reinhardtii. Biosens Bioelectron 2009; 25:294-300. [PMID: 19674888 DOI: 10.1016/j.bios.2009.07.003] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2009] [Revised: 06/23/2009] [Accepted: 07/09/2009] [Indexed: 11/19/2022]
Abstract
Homology-based protein modelling and computational screening followed by virtual mutagenesis analyses were used to identify functional amino acids in the D1 protein of the photosynthetic electron transfer chain interacting with herbicides. A library of functional mutations in the unicellular green alga Chlamydomonas reinhardtii for preparing biomediators was built and their interactions with herbicides were calculated. D1 proteins giving the lowest and highest binding energy with herbicides were considered as suitable for preparing the environmental biosensors for detecting specific herbicide classes. Arising from the results of theoretical calculations, three mutants were prepared by site-directed mutagenesis and characterized by fluorescence analysis. Their adsorption and selective recognition ability were studied by an equilibrium-adsorption method. The S268C and S264K biomediators showed high sensitivity and resistance, respectively, to both triazine and urea classes of herbicides. When immobilized on a silicon septum, the biomediators were found to be highly stable, remaining so for at least 1-month at room temperature. The fluorescence properties were exploited and a reusable and portable multiarray optical biosensor for environmental monitoring was developed with limits of detection between 0.8 x 10(-11) and 3.0 x 10(-9), depending on the target analyte. In addition, biomediator regeneration without obvious deterioration in performance was demonstrated.
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Affiliation(s)
- Maria Teresa Giardi
- Institute of Crystallography, Area of Research of Rome, Department of Agrofood, CNR, Via Salaria km 29.300, 00015, Monterotondo Scalo, Rome, Italy
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