151
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"The Smartphone's Guide to the Galaxy": In Situ Analysis in Space. BIOSENSORS-BASEL 2018; 8:bios8040096. [PMID: 30347742 PMCID: PMC6316803 DOI: 10.3390/bios8040096] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/05/2018] [Accepted: 10/13/2018] [Indexed: 01/02/2023]
Abstract
A human mission to Mars can be viewed as the apex of human technological achievement. However, to make this dream a reality several obstacles need to be overcome. One is devising practical ways to safeguard the crew health during the mission through the development of easy operable and compact sensors. Lately, several smartphone-based sensing devices (SBDs) with the purpose to enable the immediate sensitive detection of chemicals, proteins or pathogens in remote settings have emerged. In this critical review, the potential to piggyback these systems for in situ analysis in space has been investigated on application of a systematic keyword search whereby the most relevant articles were examined comprehensively and existing SBDs were divided into 4 relevant groups for the monitoring of crew health during space missions. Recently developed recognition elements (REs), which could offer the enhanced ability to tolerate those harsh conditions in space, have been reviewed with recommendations offered. In addition, the potential use of cell free synthetic biology to obtain long-term shelf-stable reagents was reviewed. Finally, a synopsis of the possibilities of combining novel SBD, RE and nanomaterials to create a compact sensor-platform ensuring adequate crew health monitoring has been provided.
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152
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Li X, Tang X, Chen X, Qu B, Lu L. Label-free and enzyme-free fluorescent isocarbophos aptasensor based on MWCNTs and G-quadruplex. Talanta 2018; 188:232-237. [DOI: 10.1016/j.talanta.2018.05.092] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 05/22/2018] [Accepted: 05/27/2018] [Indexed: 01/08/2023]
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153
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Zhao J, Jiang Y, Kong M, Liu G, Dionysiou DD. Fe(III)-oxalate complex mediated phosphate released from diazinon photodegradation: Pathway signatures based on oxygen isotopes. JOURNAL OF HAZARDOUS MATERIALS 2018; 358:319-326. [PMID: 29990820 DOI: 10.1016/j.jhazmat.2018.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 06/28/2018] [Accepted: 07/01/2018] [Indexed: 06/08/2023]
Abstract
The photodegradation of organophosphorus pesticides has an important influence on their fate and bioavailability in the water environment. In this study, the kinetics and mechanisms of diazinon photodegradation by Fe(III)-oxalate complex have been determined. Special attention was given to the pathway by which phosphate is released following diazinon photodegradation, as assessed by HPLC-ESI-Q/TOF-MS coupled with oxygen isotope. The results showed that diazinon was stable under dark treatment. However, the degradation of diazinon was observed in the UV-only, UV-Fe(III), and UV-Fe(III)-oxalate treatments. The degradation rate constant is the largest in the UV-Fe(III)-oxalate treatment and clearly influenced by the pH and Fe(III) / oxalate ratio. The hydroxyl radical (OH) was the main reactive oxygen species (ROS) in the UV-Fe(III)-oxalate complex treatment and the steady-state concentration of OH was 5.75 × 10-14 M. The products analysis revealed that phosphate could be released during the photodegradation of diazinon; the intermediate products were diazonon, 2-hydroxydiazonon, hydroxydiazonon, hydrogen phosphorothioate, O,O-diethyl thiophosphate (DETP), diethyl phosphate (DEP) and pyrimidinol (IMP). Compound stable oxygen isotope analysis coupled to Q-TOF/MS revealed that the degradation of diazinon initiated by the P-O bond cleavage.
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Affiliation(s)
- Jianwei Zhao
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture/College of Resources and Environmental Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Yongcan Jiang
- Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, China
| | - Minghao Kong
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Guanglong Liu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture/College of Resources and Environmental Sciences, Huazhong Agricultural University, Wuhan 430070, China; Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
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154
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Hung SH, Lee JY, Hu CC, Chiu TC. Gold-nanoparticle-based fluorescent “turn-on” sensor for selective and sensitive detection of dimethoate. Food Chem 2018; 260:61-65. [DOI: 10.1016/j.foodchem.2018.03.149] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 03/15/2018] [Accepted: 03/31/2018] [Indexed: 12/22/2022]
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155
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Ma X, Zhang L, Xia M, Zhang X, Zhang Y. Catalytic degradation of organophosphorous nerve agent simulants by polymer beads@graphene oxide with organophosphorus hydrolase-like activity based on rational design of functional bimetallic nuclear ligand. JOURNAL OF HAZARDOUS MATERIALS 2018; 355:65-73. [PMID: 29775879 DOI: 10.1016/j.jhazmat.2018.04.084] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 04/22/2018] [Accepted: 04/29/2018] [Indexed: 06/08/2023]
Abstract
The degradation of organophosphorous nerve agents is of primary concern due to the severe toxicity of these agents. Based on the active center of organophosphorus hydrolase (OPH), a bimetallic nuclear ligand, (5-vinyl-1,3-phenylene)bis(di(1H-imidazol-2-yl) methanol) (VPIM), was designed and synthesized, which contains four imidazole groups to mimic the four histidines at OPH active center. By grafting VPIM on graphene oxide (GO) surface via polymerization, the VPIM-polymer beads@GO was produced. The obtained OPH mimics has an impressive activity in dephosphorylation reactions (turnover frequency (TOF) towards paraoxon: 2.3 s-1). The synergistic catalytic effect of the bimetallic Zn2+ nuclear center and carboxyl groups on surface of GO possibly contributes to the high hydrolysis on organophosphate substrate. Thus, a biomimetic catalyst for efficient degradation of some organophosphorous nerve agent simulants, such as paraoxon and chlorpyrifos, was prepared by constructing catalytic active sites. The proposed mechanism and general synthetic strategy open new avenues for the engineering of functional GOs for biomimetic catalysts.
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Affiliation(s)
- Xuejuan Ma
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Changan West Road 620, 710119, Xi'an, China; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Changan West Road 620, 710119, Xi'an, China
| | - Lin Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Changan West Road 620, 710119, Xi'an, China; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Changan West Road 620, 710119, Xi'an, China
| | - Mengfan Xia
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Changan West Road 620, 710119, Xi'an, China; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Changan West Road 620, 710119, Xi'an, China
| | - Xiaohong Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Changan West Road 620, 710119, Xi'an, China; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Changan West Road 620, 710119, Xi'an, China
| | - Yaodong Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Changan West Road 620, 710119, Xi'an, China; Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Changan West Road 620, 710119, Xi'an, China.
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156
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An ultrosensitive biosensor based on electroactive nanoparticles self-assembled from 3-thiophenecarboxylic acid-modified starch. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4359-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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157
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158
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New Carrier Made from Glass Nanofibres for the Colorimetric Biosensor of Cholinesterase Inhibitors. BIOSENSORS-BASEL 2018; 8:bios8020051. [PMID: 29848955 PMCID: PMC6023030 DOI: 10.3390/bios8020051] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 05/24/2018] [Accepted: 05/24/2018] [Indexed: 01/25/2023]
Abstract
Cholinesterase inhibitors are widely used as pesticides in agriculture, but also form a group of organophosphates known as nerve chemical warfare agents. This calls for close attention regarding their detection, including the use of various biosensors. One such biosensor made in the Czech Republic is the Detehit, which is based on a cholinesterase reaction that is assessed using a colour indicator—the Ellman’s reagent—which is anchored on cellulose filter paper together with the substrate. With the use of this biosensor, detection is simple, quick, and sensitive. However, its disadvantage is that a less pronounced yellow discoloration occurs, especially under difficult light conditions. As a possible solution, a new indicator/substrate carrier has been designed. It is made of glass nanofibres, so the physical characteristics of the carrier positively influence reaction conditions, and as a result improve the colour response of the biosensor. The authors present and discuss some of the results of the study of this carrier under various experimental conditions. These findings have been used for the development of a modified Detehit biosensor.
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159
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Nano carbon black-based screen printed sensor for carbofuran, isoprocarb, carbaryl and fenobucarb detection: application to grain samples. Talanta 2018; 186:389-396. [PMID: 29784378 DOI: 10.1016/j.talanta.2018.04.082] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/23/2018] [Accepted: 04/26/2018] [Indexed: 12/24/2022]
Abstract
An electrochemical screening assay for the detection of phenyl carbamates (i.e. carbaryl, carbofuran, isoprocarb and fenobucarb) was developed and applied to grains samples (i.e. durum wheat, soft wheat and maize). Nano carbon black (CB) was strategically employed to realize an effective, reproducible, fouling resistant, low cost, delocalisable screen printed sensor (CB-SPE). CB-SPEs morphology (SEM and FEM) and electrochemical property (CV and EIS) were studied. The final pesticides analysis protocol consist of: (i) extraction of the analyte (just by mixing), (ii) alkaline hydrolysis (10 min R.T.), (iii) DPV detection directly of 100 µL of extract on the CB-SPE surface. Linear range between 1.0 × 10-7 and 1.0 × 10-4 mol L-1, good determination coefficients (R2 ≥ 0.9971) and satisfactory sensitivity (≥ 3.90 × 10-1 A M-1 cm-2) and LODs (≤ 8.0 × 10-8 mol L-1) were obtained for all the analytes. Excellent recoveries (78-102%) and accuracy (relative error vs. HPLC-MS/MS between 9.0% and -7.8%) resulted from the analysis of grains samples. The proposed CB-SPE based approach has demonstrated to be able to detect carbaryl at Maximum residue limits levels (MRLs), allowing class selective detection of commonly employed phenyl carbamates in food samples.
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160
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Ma L, Zhou L, He Y, Wang L, Huang Z, Jiang Y, Gao J. Mesoporous Bimetallic PtPd Nanoflowers as a Platform to Enhance Electrocatalytic Activity of Acetylcholinesterase for Organophosphate Pesticide Detection. ELECTROANAL 2018. [DOI: 10.1002/elan.201700845] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Li Ma
- School of Chemical Engineering and Technology; Hebei University of Technology; Tianjin 300130 China
| | - Liya Zhou
- School of Chemical Engineering and Technology; Hebei University of Technology; Tianjin 300130 China
| | - Ying He
- School of Chemical Engineering and Technology; Hebei University of Technology; Tianjin 300130 China
| | - Lihui Wang
- School of Chemical Engineering and Technology; Hebei University of Technology; Tianjin 300130 China
| | - Zhihong Huang
- School of Chemical Engineering and Technology; Hebei University of Technology; Tianjin 300130 China
| | - Yanjun Jiang
- School of Chemical Engineering and Technology; Hebei University of Technology; Tianjin 300130 China
- National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization; Hebei University of Technology; Tianjin 300130 China
| | - Jing Gao
- School of Chemical Engineering and Technology; Hebei University of Technology; Tianjin 300130 China
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161
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Antunes RS, Garcia LF, Somerset VS, Gil EDS, Lopes FM. The Use of a Polyphenoloxidase Biosensor Obtained from the Fruit of Jurubeba (Solanum paniculatum L.) in the Determination of Paracetamol and Other Phenolic Drugs. BIOSENSORS 2018; 8:E36. [PMID: 29614829 PMCID: PMC6023012 DOI: 10.3390/bios8020036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 03/12/2018] [Accepted: 03/29/2018] [Indexed: 12/16/2022]
Abstract
The vegetable kingdom is a wide source of a diverse variety of enzymes with broad biotechnological applications. Among the main classes of plant enzymes, the polyphenol oxidases, which convert phenolic compounds to the related quinones, have been successfully used for biosensor development. The oxidation products from such enzymes can be electrochemically reduced, and the sensing is easily achieved by amperometric transducers. In this work, the polyphenoloxidases were extracted from jurubeba (Solanum paniculatum L.) fruits, and the extract was used to construct a carbon paste-based biosensor for pharmaceutical analysis and applications. The assay optimization was performed using a 0.1 mM catechol probe, taking into account the amount of enzymatic extract (50 or 200 μL) and the optimum pH (3.0 to 9.0) as well as some electrochemical differential pulse voltammetric (DPV) parameters (e.g., pulse amplitude, pulse range, pulse width, scan rate). Under optimized conditions, the biosensor was evaluated for the quantitative determination of acetaminophen, acetylsalicylic acid, methyldopa, and ascorbic acid. The best performance was obtained for acetaminophen, which responded linearly in the range between 5 and 245 μM (R = 0.9994), presenting a limit of detection of 3 μM and suitable repeatability ranging between 1.52% and 1.74% relative standard deviation (RSD).
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Affiliation(s)
- Rafael Souza Antunes
- Faculdade de Farmácia, Universidade Federal do Goiás (UFG), rua 221 esquina com a 5ª avenida s/n, Setor Universitário, Goiânia-GO 74605-170, Brazil.
| | - Luane Ferreira Garcia
- Faculdade de Farmácia, Universidade Federal do Goiás (UFG), rua 221 esquina com a 5ª avenida s/n, Setor Universitário, Goiânia-GO 74605-170, Brazil.
| | - Vernon Sydwill Somerset
- Department of Chemistry, Faculty of Applied Sciences, Cape Peninsula University of Technology, Bellville 7535, South Africa.
| | - Eric de Souza Gil
- Faculdade de Farmácia, Universidade Federal do Goiás (UFG), rua 221 esquina com a 5ª avenida s/n, Setor Universitário, Goiânia-GO 74605-170, Brazil.
| | - Flavio Marques Lopes
- Faculdade de Farmácia, Universidade Federal do Goiás (UFG), rua 221 esquina com a 5ª avenida s/n, Setor Universitário, Goiânia-GO 74605-170, Brazil.
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162
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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: 59] [Impact Index Per Article: 9.8] [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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163
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Verma S, Srivastava A. Cyto-genotoxic consequences of carbendazim treatment monitored by cytogenetical analysis using Allium root tip bioassay. ENVIRONMENTAL MONITORING AND ASSESSMENT 2018; 190:238. [PMID: 29564638 DOI: 10.1007/s10661-018-6616-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 03/12/2018] [Indexed: 06/08/2023]
Abstract
Environmental pollution is one of the major problems of these days. One of the reasons of environmental pollution is the indiscriminate use of agrochemicals in agriculture. Fungicides are being extensively used in agriculture for enhancing crop yield and growth by controlling fungal growth. Fungicide carbendazim is widely applied to soil and seeds of vegetable/cereal crops in India and is effective against a very broad spectrum of fungi. The present study was designed to monitor the cyto-genotoxic effects of carbendazim directly in treated soils by cytogenetical analysis using Allium cepa root tip bioassay. In a pot experiment, fungicide carbendazim was added to soil at the rates of 2.5, 5, 7.5, and 10 mg kg-1 soil and uniform size onion bulb was planted in each pot, and three replicates were maintained for each dose at 1, 7, 15, 30, and 45 days after application and roots from onion bulbs were fixed for cytogenetical analysis. Findings indicate that carbendazim treatment leads to a significant dose and duration-dependent decrease in percent mitotic index with related increase in mitotic inhibition. Statistical analysis showed a significant effect of carbendazim doses and duration of treatment on the percentage relative abnormality rate of A. cepa. Phase indices of our study showed high numbers of cells in prophase as compared to other phases at some doses of treatment. The different types of chromosomal abnormalities observed in our study serve as indicators of genotoxicity of carbendazim and we report for the first time the effect of its application directly in soil using a plant test system.
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Affiliation(s)
- Sonam Verma
- In Vitro Culture and Plant Genetics Unit, Department of Botany, Faculty of Science, University of Lucknow, Lucknow, UP, 226007, India
| | - Alka Srivastava
- In Vitro Culture and Plant Genetics Unit, Department of Botany, Faculty of Science, University of Lucknow, Lucknow, UP, 226007, India.
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164
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Vikrant K, Tsang DCW, Raza N, Giri BS, Kukkar D, Kim KH. Potential Utility of Metal-Organic Framework-Based Platform for Sensing Pesticides. ACS APPLIED MATERIALS & INTERFACES 2018; 10:8797-8817. [PMID: 29465977 DOI: 10.1021/acsami.8b00664] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The progress in modern agricultural practices could not have been realized without the large-scale contribution of assorted pesticides (e.g., organophosphates and nonorganophosphates). Precise tracking of these chemicals has become very important for safeguarding the environment and food resources owing to their very high toxicity. Hence, the development of sensitive and convenient sensors for the on-site detection of pesticides is imperative to overcome practical limitations encountered in conventional methodologies, which require skilled manpower at the expense of high cost and low portability. In this regard, the role of novel, advanced functional materials such as metal-organic frameworks (MOFs) has drawn great interest as an alternative for conventional sensory systems because of their numerous advantages over other nanomaterials. This review was organized to address the recent advances in applications of MOFs for sensing various pesticides because of their tailorable optical and electrical characteristics. It also provides in-depth comparison of the performance of MOFs with other nanomaterial sensing platforms. Further, we discuss the present challenges (e.g., potential bias due to instability under certain conditions, variations in the diffusion rate of the pesticide, chemical interferences, and the precise measurement of luminesce quenching) in developing robust and sensitive sensors by using tailored porosity, functionalities, and better framework stability.
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Affiliation(s)
- Kumar Vikrant
- Department of Chemical Engineering and Technology, Centre of Advanced Study, Indian Institute of Technology , Banaras Hindu University , Varanasi 221005 , India
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering , The Hong Kong Polytechnic University , Hung Hom, Kowloon , Hong Kong , China
| | - Nadeem Raza
- Government Emerson College Affiliated with Bahauddin Zakariya University , Multan 60800 , Pakistan
- Department of Materials Science and Metallurgy , University of Cambridge , Cambridge CB3 0FS , U.K
| | - Balendu Shekher Giri
- Department of Chemical Engineering and Technology, Centre of Advanced Study, Indian Institute of Technology , Banaras Hindu University , Varanasi 221005 , India
| | - Deepak Kukkar
- Department of Nanotechnology , Sri Guru Granth Sahib World University , Fatehgarh Sahib 140406 , Punjab , India
- Department of Civil and Environmental Engineering , Hanyang University , 222 Wangsimni-Ro , Seoul 04763 , Republic of Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering , Hanyang University , 222 Wangsimni-Ro , Seoul 04763 , Republic of Korea
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165
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Yang J, Hu X, Xu J, Liu X, Yang L. Single-Step In Situ Acetylcholinesterase-Mediated Alginate Hydrogelation for Enzyme Encapsulation in CE. Anal Chem 2018; 90:4071-4078. [DOI: 10.1021/acs.analchem.7b05353] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jiqing Yang
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province 130024, People’s Republic of China
| | - Xiaotong Hu
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province 130024, People’s Republic of China
| | - Jia Xu
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province 130024, People’s Republic of China
| | - Xin Liu
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province 130024, People’s Republic of China
| | - Li Yang
- Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province 130024, People’s Republic of China
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166
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Ultrasensitive Determination of Malathion Using Acetylcholinesterase Immobilized on Chitosan-Functionalized Magnetic Iron Nanoparticles. BIOSENSORS-BASEL 2018; 8:bios8010016. [PMID: 29438301 PMCID: PMC5872064 DOI: 10.3390/bios8010016] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 02/07/2018] [Accepted: 02/07/2018] [Indexed: 01/19/2023]
Abstract
A renewable, disposable, low cost, and sensitive sensor for the detection of organophosphorus pesticides was constructed by immobilizing the acetylcholinesterase enzyme (AChE), via glutaraldehyde, on magnetic iron nanoparticles (Fe3O4) previously synthesized and functionalized with chitosan (CS). The sensor was denoted AChE/CS/Fe3O4. The magnetic nanoparticles were characterized by Fourier transform infrared spectroscopy and transmission electron microscopy. Acetylthiocholine (ATCh) was incubated with AChE/CS/Fe3O4 and attached to a screen-printed electrode using a magnet. The oxidation of thiocholine (from ATCh hydrolysis) was monitored at an applied potential of +0.5 V vs. Ag/AgCl(KClsat) in 0.1 mol L−1 phosphate buffer solution (pH 7.5) as the supporting electrolyte. A mixture of the pesticide malathion and ATCh was investigated using the same procedure, and the results were compared and expressed as inhibition percentages. For determination of malathion, the proposed sensor presented a linear response in the range from 0.5 to 20 nmol L−1 (R = 0.9942). The limits of detection (LOD) and quantification (LOQ) were 0.3 and 0.8 nmol L−1, respectively. Real samples were also investigated, with recovery values of 96.0% and 108.3% obtained for tomato and pond water samples, respectively. The proposed sensor is a feasible option for malathion detection, offering a linear response, good sensitivity, and a low detection limit.
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167
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Fatma F, Verma S, Kamal A, Srivastava A. Phytotoxicity of pesticides mancozeb and chlorpyrifos: correlation with the antioxidative defence system in Allium cepa. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2018; 24:115-123. [PMID: 29398843 PMCID: PMC5787121 DOI: 10.1007/s12298-017-0490-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 10/17/2017] [Accepted: 11/21/2017] [Indexed: 05/02/2023]
Abstract
Pesticides are a group of chemical substances which are widely used to improve agricultural production. However, these substances could be persistent in soil and water, accumulative in sediment or bio-accumulative in biota depending on their solubility, leading to different types of environmental pollution. The present study was done to assess the impact of pesticides-mancozeb and chlorpyrifos, via morphological and physiological parameters using Allium cepa test system. Phytotoxic effects of pesticides were examined via germination percentage, survival percentage, root and shoot length, root shoot length ratio, seedling vigor index, percentage of phytotoxicity and tolerance index. Oxidative stress on Allium seedlings caused by pesticides was also assessed by investigating the activity of antioxidative enzymes viz. catalase, peroxidase and superoxide dismutase. Correlation was worked out between morphological parameters and antioxidative enzymes to bring out the alliance between them. Mancozeb and chlorpyrifos concentrations were significantly and positively correlated with the activity of antioxidative enzymes and negatively correlated with morphological parameters. Significant positive correlation between various morphological parameters showed their interdependency. However, negative correlation was obtained between activity of antioxidative enzymes and morphological parameters. The enzymes however, showed positive correlation with each other. Based on our result we can conclude that all morphological parameters were adversely affected by the two pesticides as reflected by phytotoxicity in Allium. Their negative correlation with activity of antioxidative enzymes indicates that upregulation of antioxidative enzymes is not sufficient to overcome the toxic effect, thereby signifying the threat being caused by the regular use of these pesticides.
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Affiliation(s)
- Firdos Fatma
- Department of Bioengineering, Integral University, Lucknow, India
| | - Sonam Verma
- In Vitro Culture and Plant Genetics Unit, Department of Botany, Faculty of Science, University of Lucknow, Lucknow, U.P. 226007 India
| | - Aisha Kamal
- Department of Bioengineering, Integral University, Lucknow, India
| | - Alka Srivastava
- In Vitro Culture and Plant Genetics Unit, Department of Botany, Faculty of Science, University of Lucknow, Lucknow, U.P. 226007 India
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168
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Rana K, Bhamore JR, Rohit JV, Park TJ, Kailasa SK. Ligand exchange reactions on citrate-gold nanoparticles for a parallel colorimetric assay of six pesticides. NEW J CHEM 2018. [DOI: 10.1039/c8nj01294f] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A rapid parallel colorimetric method was developed for identification of six pesticides (acephate, phenthoate, profenofos, acetamiprid, chlorothalonil and cartap) via ligand exchange reactions on citrate-gold nanoparticles.
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Affiliation(s)
- Kirankumar Rana
- Department of Applied Chemistry
- S. V. National Institute of Technology
- Surat-395 007
- India
| | - Jigna R. Bhamore
- Department of Applied Chemistry
- S. V. National Institute of Technology
- Surat-395 007
- India
| | - Jigneshkumar V. Rohit
- Department of Applied Chemistry
- S. V. National Institute of Technology
- Surat-395 007
- India
| | - Tae-Jung Park
- Department of Chemistry
- Institute of Interdisciplinary Convergence Research
- Research Institute of Halal Industrialization Technology
- Chung-Ang University
- Dongjak-gu
| | - Suresh Kumar Kailasa
- Department of Applied Chemistry
- S. V. National Institute of Technology
- Surat-395 007
- India
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169
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Samsidar A, Siddiquee S, Shaarani SM. A review of extraction, analytical and advanced methods for determination of pesticides in environment and foodstuffs. Trends Food Sci Technol 2018. [DOI: 10.1016/j.tifs.2017.11.011] [Citation(s) in RCA: 206] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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170
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Shaik M, Rao VK, Ramana G, Halder M, Gutch PK, Pandey P, Jain R. p-Hexafluoroisopropanol phenyl functionalized graphene for QCM based detection of dimethyl methylphosphonate, a simulant of the nerve agent sarin. RSC Adv 2018; 8:8240-8245. [PMID: 35541990 PMCID: PMC9078545 DOI: 10.1039/c7ra12272a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 01/19/2018] [Indexed: 11/21/2022] Open
Abstract
The hexafluoroisopropanol moiety was grafted onto graphene and used as a sensing layer for the detection of a nerve agent simulant using QCM.
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Affiliation(s)
- Mahabul Shaik
- Defence Research & Development Establishment
- Gwalior 474002
- India
| | | | | | - M. Halder
- Defence Research & Development Establishment
- Gwalior 474002
- India
| | - P. K. Gutch
- Defence Research & Development Establishment
- Gwalior 474002
- India
| | - P. Pandey
- Defence Research & Development Establishment
- Gwalior 474002
- India
| | - R. Jain
- School of Chemistry
- Jiwaji University
- Gwalior 474002
- India
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171
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Pan L, Sun J, Li Z, Zhan Y, Xu S, Zhu L. Organophosphate pesticide in agricultural soils from the Yangtze River Delta of China: concentration, distribution, and risk assessment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:4-11. [PMID: 27687760 DOI: 10.1007/s11356-016-7664-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 09/09/2016] [Indexed: 06/06/2023]
Abstract
Organophosphorus pesticides (OPPs) are used worldwide and pose great risks to human health. However, information on their presence in agricultural soils at regional scale and the associated risks is limited. In this study, an extensive investigation on agricultural soils was conducted throughout the Yangtze River Delta (YRD) of China to reveal the status of OPP pollution. The total concentrations of the nine OPPs ranged from <3.0 to 521 ng g-1 dry weight, with a mean of 64.7 ng g-1 dry weight and a detection rate of 93 %. Dimethoate was found to be the primary compound, followed by methyl parathion and parathion. The highest concentrations of OPPs were found in Jiangsu province due to the intensive agricultural activities. The pollution of OPPs is also highly associated with the land use types. The lower concentrations of OPPs found in vegetable fields could be attributed to their easy photodegradation and hydrolysis in aerobic soils. There was no significant difference in microbial communities among the sample sites, indicating that OPPs in agricultural soils of the YRD region cause negligible effects on microbiota. The risks of OPPs in the soils to human health were further evaluated. The hazard indexes in all the soil samples were below 1, suggesting absence of non-cancer risks. This study provides valuable information for a better understanding of the pollution status of OPPs in agricultural soils and a scientific basis for soil quality assessments.
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Affiliation(s)
- Lili Pan
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China
| | - Jianteng Sun
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Zhiheng Li
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Yu Zhan
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China
| | - Shen Xu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Lizhong Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China.
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China.
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172
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Zhou L, Zhang X, Ma L, Gao J, Jiang Y. Acetylcholinesterase/chitosan-transition metal carbides nanocomposites-based biosensor for the organophosphate pesticides detection. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2017.10.008] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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173
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174
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Chormey DS, Karakuş Y, Karayaka S, Özsöyler Ç, Bozdoğan AE, Bakırdere S. Multivariate optimization of dispersive liquid-liquid microextraction for the determination of paclobutrazol and triflumizole in water by GC-MS. J Sep Sci 2017; 40:4541-4548. [DOI: 10.1002/jssc.201700853] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 09/14/2017] [Accepted: 09/15/2017] [Indexed: 12/25/2022]
Affiliation(s)
- Dotse Selali Chormey
- Yıldız Technical University; Faculty of Art and Science; Chemistry Department; İstanbul Turkey
| | - Yeşim Karakuş
- Yıldız Technical University; Faculty of Art and Science; Chemistry Department; İstanbul Turkey
| | - Sena Karayaka
- Yıldız Technical University; Faculty of Art and Science; Chemistry Department; İstanbul Turkey
| | - Çağla Özsöyler
- Yıldız Technical University; Faculty of Art and Science; Chemistry Department; İstanbul Turkey
| | | | - Sezgin Bakırdere
- Yıldız Technical University; Faculty of Art and Science; Chemistry Department; İstanbul Turkey
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175
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Goldsmith M, Tawfik DS. Enzyme engineering: reaching the maximal catalytic efficiency peak. Curr Opin Struct Biol 2017; 47:140-150. [PMID: 29035814 DOI: 10.1016/j.sbi.2017.09.002] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/04/2017] [Accepted: 09/20/2017] [Indexed: 01/01/2023]
Abstract
The practical need for highly efficient enzymes presents new challenges in enzyme engineering, in particular, the need to improve catalytic turnover (kcat) or efficiency (kcat/KM) by several orders of magnitude. However, optimizing catalysis demands navigation through complex and rugged fitness landscapes, with optimization trajectories often leading to strong diminishing returns and dead-ends. When no further improvements are observed in library screens or selections, it remains unclear whether the maximal catalytic efficiency of the enzyme (the catalytic 'fitness peak') has been reached; or perhaps, an alternative combination of mutations exists that could yield additional improvements. Here, we discuss fundamental aspects of the process of catalytic optimization, and offer practical solutions with respect to overcoming optimization plateaus.
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Affiliation(s)
- Moshe Goldsmith
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel.
| | - Dan S Tawfik
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
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176
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Stoytcheva M, Zlatev R, Montero G, Velkova Z, Gochev V. A nanotechnological approach to biosensors sensitivity improvement: application to organophosphorus pesticides determination. BIOTECHNOL BIOTEC EQ 2017. [DOI: 10.1080/13102818.2017.1389618] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Margarita Stoytcheva
- Instituto De Ingeniería, Universidad Autónoma De Baja California, Mexicali, Mexico
| | - Roumen Zlatev
- Instituto De Ingeniería, Universidad Autónoma De Baja California, Mexicali, Mexico
| | - Gisela Montero
- Instituto De Ingeniería, Universidad Autónoma De Baja California, Mexicali, Mexico
| | - Zdravka Velkova
- Department of Chemical Sciences, Faculty of Pharmacy, Medical University of Plovdiv, Plovdiv, Bulgaria
| | - Velizar Gochev
- Department of Biochemistry and Microbiology, Faculty of Biology, Plovdiv University “P. Hilendarski”, Plovdiv, Bulgaria
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177
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Zhao F, She Y, Zhang C, Cao X, Wang S, Zheng L, Jin M, Shao H, Jin F, Wang J. Selective solid-phase extraction based on molecularly imprinted technology for the simultaneous determination of 20 triazole pesticides in cucumber samples using high-performance liquid chromatography-tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1064:143-150. [DOI: 10.1016/j.jchromb.2017.08.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 08/15/2017] [Accepted: 08/16/2017] [Indexed: 10/19/2022]
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178
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Electrochemical acetylcholinesterase biosensor based on multi-walled carbon nanotubes/dicyclohexyl phthalate modified screen-printed electrode for detection of chlorpyrifos. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.06.032] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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179
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Rajangam B, Daniel DK, Krastanov AI. Progress in enzyme inhibition based detection of pesticides. Eng Life Sci 2017; 18:4-19. [PMID: 32624856 DOI: 10.1002/elsc.201700028] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 06/13/2017] [Accepted: 07/03/2017] [Indexed: 01/16/2023] Open
Abstract
The previous few decades have seen the development of biosensors and their use in monitoring of pesticides in food and environmental samples. Although inhibition-based biosensors have been subject of several recent research works, their performance characteristics greatly depend on the type of immobilization and the presence of interfering compounds in the samples. Moreover, sensitivity, detection limits, and rapidity of the response are few of the other major features that need to be investigated further if they are to become operationally user-friendly. This review will highlight research carried out in the past on biosensors that are based on enzyme inhibition for determination of organophosphorus compounds and carbamate pesticides.
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180
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Chormey DS, Büyükpınar Ç, Turak F, Komesli OT, Bakırdere S. Simultaneous determination of selected hormones, endocrine disruptor compounds, and pesticides in water medium at trace levels by GC-MS after dispersive liquid-liquid microextraction. ENVIRONMENTAL MONITORING AND ASSESSMENT 2017; 189:277. [PMID: 28527034 DOI: 10.1007/s10661-017-6003-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 05/09/2017] [Indexed: 06/07/2023]
Abstract
The need to enhance food safety has led to major advancements in pesticide productions, and though many benefits have been gained, environmental contamination has also risen from these chemicals that tend to persist in the environment. Some pesticides, together with other chemicals commonly called endocrine disruptor compounds, block the receptor sites of hormones or mimic displaced hormones, leading to imbalanced hormonal levels that result in health disorders and diseases. These chemicals occur at trace levels and are not directly detected by conventional analytical methods. A dispersive liquid-liquid microextraction method was therefore developed for preconcentration of 12 analytes including hormones, endocrine disruptor compounds, and pesticides, to be analyzed by gas chromatography mass spectrometry. This was achieved by optimizing parameters such as extractor solvent type and amount, dispersive solvent type and amount, pH, and salt effect that affect extraction output. The limits of detection and quantification of the developed method were between 0.09 and 3.36 and 0.31 and 11.19 ng mL-1, respectively. The calibration plots of the analytes also showed good linearity and low percent relative standard deviations. Recovery studies were performed for tap water and wastewater samples, and the percent recoveries recorded were between 84 and 109%.
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Affiliation(s)
| | - Çağdaş Büyükpınar
- Department of Chemistry, Yıldız Technical University, 34349, İstanbul, Turkey
| | - Fatma Turak
- Department of Chemistry, Yıldız Technical University, 34349, İstanbul, Turkey
| | - Okan Tarık Komesli
- Department of Environmental Engineering, Ataturk University, 25250, Erzurum, Turkey
| | - Sezgin Bakırdere
- Department of Chemistry, Yıldız Technical University, 34349, İstanbul, Turkey.
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181
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Stereoselective quantification of triticonazole in vegetables by supercritical fluid chromatography. Talanta 2017; 164:362-367. [DOI: 10.1016/j.talanta.2016.08.077] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Revised: 08/25/2016] [Accepted: 08/29/2016] [Indexed: 12/18/2022]
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182
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Bagheri H, Afkhami A, Khoshsafar H, Hajian A, Shahriyari A. Protein capped Cu nanoclusters-SWCNT nanocomposite as a novel candidate of high performance platform for organophosphates enzymeless biosensor. Biosens Bioelectron 2017; 89:829-836. [DOI: 10.1016/j.bios.2016.10.003] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 09/28/2016] [Accepted: 10/03/2016] [Indexed: 02/07/2023]
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183
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Belakhov VV, Garabadzhiu AV, Boikova IV, Antonova IA. Synthesis of β-D-xylopyranoside thiophosphate derivatives. RUSS J GEN CHEM+ 2017. [DOI: 10.1134/s107036321703148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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184
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Febbraio F. Biochemical strategies for the detection and detoxification of toxic chemicals in the environment. World J Biol Chem 2017; 8:13-20. [PMID: 28289515 PMCID: PMC5329710 DOI: 10.4331/wjbc.v8.i1.13] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 12/12/2016] [Accepted: 01/18/2017] [Indexed: 02/05/2023] Open
Abstract
Addressing the problems related to the widespread presence of an increasing number of chemicals released into the environment by human activities represents one of the most important challenges of this century. In the last few years, to replace the high cost, in terms of time and money, of conventional technologies, the scientific community has directed considerable research towards the development both of new detection systems for the measurement of the contamination levels of chemicals in people’s body fluids and tissue, as well as in the environment, and of new remediation strategies for the removal of such chemicals from the environment, as a means of the prevention of human diseases. New emerging biosensors for the analysis of environmental chemicals have been proposed, including VHH antibodies, that combine the antibody performance with the affinity for small molecules, genetically engineered microorganisms, aptamers and new highly stable enzymes. However, the advances in the field of chemicals monitoring are still far from producing a continuous real-time and on-line system for their detection. Better results have been obtained in the development of strategies which use organisms (microorganisms, plants and animals) or metabolic pathway-based approaches (single enzymes or more complex enzymatic solutions) for the fixation, degradation and detoxification of chemicals in the environment. Systems for enzymatic detoxification and degradation of toxic agents in wastewater from chemical and manufacturing industries, such as ligninolytic enzymes for the treatment of wastewater from the textile industry, have been proposed. Considering the high value of these research studies, in terms of the protection of human health and of the ecosystem, science must play a major role in guiding policy changes in this field.
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185
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Homaei A. Immobilization of Penaeus merguiensis alkaline phosphatase on gold nanorods for heavy metal detection. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 136:1-7. [PMID: 27810575 DOI: 10.1016/j.ecoenv.2016.10.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/19/2016] [Accepted: 10/21/2016] [Indexed: 06/06/2023]
Abstract
Biotechnology of enzyme has gained popularity due to the growing need for novel environmental technologies and the development of innovative mass-production. The work describes the original application of biosensors based on Penaeus merguiensis alkaline phosphatase (PM ALP) immobilized on gold nanorods (GNRs) to heavy metal determination. Penaeus merguiensis alkaline phosphatase (PM ALP) was immobilized on gold nanorods (GNRs) by ionic exchange and hydrophobic interactions. The optimum pH and temperature for maximum enzyme activity for the immobilized PM ALP are identified to be 11.0 and 60°C, respectively, for the hydrolysis of para-Nitrophenylphosphate (p-NPP). The kinetic studies confirm the Michaelis-Menten behavior and suggests overall slightly decrease in the performance of the immobilized enzyme with reference to the free enzyme. Km and Vmax values were 0.32µm and 54µm. min-1 for free and 0.39µm and 48µmmin-1 for immobilized enzymes, respectively. Similarly, the thermal stability, storage stability and stability at extreme pH of the enzyme is found to increase after the immobilization. The inhibitory effect heavy metal ions was studied on free and immobilized PM ALP. The bi-enzymatic biosensor were tested to study the influence of heavy metal ions and pesticides on the corresponding enzyme. The obtained high stability and lower decrease in catalytic efficiency suggested the great potential and feasibility of immobilized PM ALP nanobiocatalyst in efficient and apply the biosensor in total toxic metal content determination.
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Affiliation(s)
- Ahmad Homaei
- Department of Biochemistry, Faculty of Science, University of Hormozgan, P. O. Box 3995, Bandar Abbas, Iran.
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186
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Hughes G, Westmacott K, Honeychurch KC, Crew A, Pemberton RM, Hart JP. Recent Advances in the Fabrication and Application of Screen-Printed Electrochemical (Bio)Sensors Based on Carbon Materials for Biomedical, Agri-Food and Environmental Analyses. BIOSENSORS 2016; 6:E50. [PMID: 27690118 PMCID: PMC5192370 DOI: 10.3390/bios6040050] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/07/2016] [Accepted: 09/19/2016] [Indexed: 01/16/2023]
Abstract
This review describes recent advances in the fabrication of electrochemical (bio)sensors based on screen-printing technology involving carbon materials and their application in biomedical, agri-food and environmental analyses. It will focus on the various strategies employed in the fabrication of screen-printed (bio)sensors, together with their performance characteristics; the application of these devices for the measurement of selected naturally occurring biomolecules, environmental pollutants and toxins will be discussed.
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Affiliation(s)
- Gareth Hughes
- Centre for Research in Biosciences, Faculty of Health and Applied Sciences, University of the West of England, Bristol, Coldharbour Lane, Bristol BS16 1QY, UK.
| | - Kelly Westmacott
- Centre for Research in Biosciences, Faculty of Health and Applied Sciences, University of the West of England, Bristol, Coldharbour Lane, Bristol BS16 1QY, UK.
| | - Kevin C Honeychurch
- Centre for Research in Biosciences, Faculty of Health and Applied Sciences, University of the West of England, Bristol, Coldharbour Lane, Bristol BS16 1QY, UK.
| | - Adrian Crew
- Centre for Research in Biosciences, Faculty of Health and Applied Sciences, University of the West of England, Bristol, Coldharbour Lane, Bristol BS16 1QY, UK.
| | - Roy M Pemberton
- Centre for Research in Biosciences, Faculty of Health and Applied Sciences, University of the West of England, Bristol, Coldharbour Lane, Bristol BS16 1QY, UK.
| | - John P Hart
- Centre for Research in Biosciences, Faculty of Health and Applied Sciences, University of the West of England, Bristol, Coldharbour Lane, Bristol BS16 1QY, UK.
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