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Whole-cell electric sensor for determination of sodium dodecyl sulfate. World J Microbiol Biotechnol 2022; 38:118. [PMID: 35614280 PMCID: PMC9132749 DOI: 10.1007/s11274-022-03309-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 05/13/2022] [Indexed: 11/15/2022]
Abstract
Linear alkyl sulfates are a major class of surfactants that have large-scale industrial application and thus wide environmental release. These organic pollutants threaten aquatic environments and other environmental compartments. We show the promise of the use of a whole-cell electric sensor in the analysis of low or residual concentrations of sodium dodecyl sulfate (SDS) in aqueous solutions. On the basis of bioinformatic analysis and alkylsulfatase activity determinations, we chose the gram-negative bacterium Herbaspirillum lusitanum, strain P6–12, as the sensing element. Strain P6–12 could utilize 0.01–400 mg/L of SDS as a growth substrate. The electric polarizability of cell suspensions changed at all frequencies used (50–3000 kHz). The determination limit of 0.01 mg/L is much lower than the official requirements for the content of SDS in potable and process water (0.5 and 1.0 mg/L, respectively), and the analysis takes about 1–5 min. The promise of H. lusitanum P6–12 for use in the remediation of SDS-polluted soils is discussed.
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2
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Dey S, Baba SA, Bhatt A, Dhyani R, Navani NK. Transcription factor based whole-cell biosensor for specific and sensitive detection of sodium dodecyl sulfate. Biosens Bioelectron 2020; 170:112659. [PMID: 33035895 DOI: 10.1016/j.bios.2020.112659] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/18/2020] [Accepted: 09/25/2020] [Indexed: 01/06/2023]
Abstract
Extensive use of Sodium Dodecyl Sulfate (SDS) in households, agricultural operations, and industries is leading to its subsequent disposal in waterways. There is an apprehension of the adverse effect of such detergents on various living organisms. Thus, an efficient, specific, and simple detection method to monitor SDS reliably in the environment is needed. We used sdsB1 activator protein and SDS-responsive promoter of sdsA1 gene along with Green Fluorescent Protein (GFP) to construct a novel SDS biosensor in Pseudomonas aeruginosa chassis. The GFP intensity of the biosensor showed a linear relationship (R2 = 0.99) from 0.4 to 62.5 ppm of SDS with a detection limit of 0.1 ppm. This biosensor is highly specific for SDS and has minimal interference from other detergents, metals, and inorganic ions. The biosensor showed a satisfactory and reproducible recovery rate for the detection of SDS in real samples. Overall, this is a low cost, easy-to-use, selective, and reliable biosensor for monitoring SDS in the environment.
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Affiliation(s)
- Sourik Dey
- Chemical Biology Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, 247667, India
| | - Shahnawaz Ahmad Baba
- Chemical Biology Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, 247667, India
| | - Ankita Bhatt
- Chemical Biology Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, 247667, India
| | - Rajat Dhyani
- Chemical Biology Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, 247667, India
| | - Naveen Kumar Navani
- Chemical Biology Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, 247667, India.
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3
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Feng A, Jiang F, Huang G, Liu P. Synthesis of the cationic fluorescent probes for the detection of anionic surfactants by electrostatic self-assembly. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 224:117446. [PMID: 31400744 DOI: 10.1016/j.saa.2019.117446] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 07/10/2019] [Accepted: 07/30/2019] [Indexed: 06/10/2023]
Abstract
Anionic surfactants were widespread used in car cleaning agents, household detergents, agricultural and industrial processes, and considered as a major source of environmental pollutant. Therefore, it is necessary to develop a fast, simple, highly selective and sensitive probe for the detection of anionic surfactants. Here, we synthesized two aggregation induced emission (AIE)-active molecules 4,4',4″,4‴-(ethene-1,1,2,2-tetrayltetrakis(benzene-4,1-diyl))tetrakis (1-(4-bromobenzyl)pyridin-1-ium) bromide (TPE-Br) and 4,4',4″,4‴-(ethene-1,1,2,2-trayltetrakis(benzene-4,1-diyl))tetrakis(1-methylpyridin-1-ium)iodide (TPE-I), which were then applied as fluorescence probes for detecting sodium dodecyl sulfate (SDS) with high selectivity and sensitivity. In the presence of SDS, a multi-fold fluorescence emission intensity enhancement was observed in both two probes (TPE-Br and TPE-I) due to the electrostatic self-assembly of AIE molecular. The limits of detection are 71.5 and 120 nM for TPE-Br and TPE-I, respectively. This study may provide a new strategy for environmental monitoring by AIE-based fluorescent probe.
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Affiliation(s)
- Aiqing Feng
- Department of Life Science, Luoyang Normal University, Luoyang 471934, PR China
| | - Fangru Jiang
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang 524048, China
| | - Guiyuan Huang
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang 524048, China
| | - Peilian Liu
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang 524048, China.
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4
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Biosensors for wastewater monitoring: A review. Biosens Bioelectron 2018; 118:66-79. [PMID: 30056302 DOI: 10.1016/j.bios.2018.07.019] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 07/07/2018] [Accepted: 07/09/2018] [Indexed: 02/06/2023]
Abstract
Water pollution and habitat degradation are the cause of increasing water scarcity and decline in aquatic biodiversity. While the freshwater availability has been declining through past decades, water demand has continued to increase particularly in areas with arid and semi-arid climate. Monitoring of pollutants in wastewater effluents are critical to identifying water pollution area for treatment. Conventional detection methods are not effective in tracing multiple harmful components in wastewater due to their variability along different times and sources. Currently, the development of biosensing instruments attracted significant attention because of their high sensitivity, selectivity, reliability, simplicity, low-cost and real-time response. This paper provides a general overview on reported biosensors, which have been applied for the recognition of important organic chemicals, heavy metals, and microorganisms in dark waters. The significance and successes of nanotechnology in the field of biomolecular detection are also reviewed. The commercially available biosensors and their main challenges in wastewater monitoring are finally discussed.
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5
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Alhadrami HA. Biosensors: Classifications, medical applications, and future prospective. Biotechnol Appl Biochem 2017; 65:497-508. [DOI: 10.1002/bab.1621] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 09/22/2017] [Accepted: 09/30/2017] [Indexed: 01/03/2023]
Affiliation(s)
- Hani A. Alhadrami
- Faculty of Applied Medical SciencesDepartment of Medical Laboratory TechnologyKing Abdulaziz University Jeddah Kingdom of Saudi Arabia
- Special Infectious Agent UnitKing Fahd Medical Research CentreKing Abdulaziz University Jeddah Kingdom of Saudi Arabia
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6
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Hassan SHA, Van Ginkel SW, Hussein MAM, Abskharon R, Oh SE. Toxicity assessment using different bioassays and microbial biosensors. ENVIRONMENT INTERNATIONAL 2016; 92-93:106-18. [PMID: 27071051 DOI: 10.1016/j.envint.2016.03.003] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 03/05/2016] [Accepted: 03/05/2016] [Indexed: 05/23/2023]
Abstract
Toxicity assessment of water streams, wastewater, and contaminated sediments, is a very important part of environmental pollution monitoring. Evaluation of biological effects using a rapid, sensitive and cost effective method can indicate specific information on ecotoxicity assessment. Recently, different biological assays for toxicity assessment based on higher and lower organisms such as fish, invertebrates, plants and algal cells, and microbial bioassays have been used. This review focuses on microbial biosensors as an analytical device for environmental, food, and biomedical applications. Different techniques which are commonly used in microbial biosensing include amperometry, potentiometry, conductometry, voltammetry, microbial fuel cells, fluorescence, bioluminescence, and colorimetry. Examples of the use of different microbial biosensors in assessing a variety of environments are summarized.
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Affiliation(s)
- Sedky H A Hassan
- Botany Department, Faculty of Science, Assiut University, New Valley Branch, 72511 Al-Kharja, Egypt
| | - Steven W Van Ginkel
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | | | - Romany Abskharon
- National Institute of Oceanography and Fisheries (NIFO), 11516 Cairo, Egypt
| | - Sang-Eun Oh
- Department of Biological Environment, Kangwon National University, 200-701 Chuncheon, Kangwon-do, South Korea.
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7
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Zheng CL, Ji ZX, Zhang J, Ding SN. A fluorescent sensor to detect sodium dodecyl sulfate based on the glutathione-stabilized gold nanoclusters/poly diallyldimethylammonium chloride system. Analyst 2014; 139:3476-80. [DOI: 10.1039/c4an00383g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Glutathione-stabilized gold nanoclusters and poly(diallyldimethylammonium)chloride enhanced fluorescent system was used to detect sodium dodecyl sulfate.
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Affiliation(s)
- Chun-Lan Zheng
- School of Chemistry & Chemical Engineering
- Southeast University
- 211189 Nanjing, China
| | - Zhong-Xiang Ji
- School of Chemistry & Chemical Engineering
- Southeast University
- 211189 Nanjing, China
| | - Jian Zhang
- School of Chemistry & Chemical Engineering
- Southeast University
- 211189 Nanjing, China
| | - Shou-Nian Ding
- School of Chemistry & Chemical Engineering
- Southeast University
- 211189 Nanjing, China
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Banerjee P, Kintzios S, Prabhakarpandian B. Biotoxin detection using cell-based sensors. Toxins (Basel) 2013; 5:2366-83. [PMID: 24335754 PMCID: PMC3873691 DOI: 10.3390/toxins5122366] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 11/22/2013] [Accepted: 11/25/2013] [Indexed: 12/11/2022] Open
Abstract
Cell-based biosensors (CBBs) utilize the principles of cell-based assays (CBAs) by employing living cells for detection of different analytes from environment, food, clinical, or other sources. For toxin detection, CBBs are emerging as unique alternatives to other analytical methods. The main advantage of using CBBs for probing biotoxins and toxic agents is that CBBs respond to the toxic exposures in the manner related to actual physiologic responses of the vulnerable subjects. The results obtained from CBBs are based on the toxin-cell interactions, and therefore, reveal functional information (such as mode of action, toxic potency, bioavailability, target tissue or organ, etc.) about the toxin. CBBs incorporate both prokaryotic (bacteria) and eukaryotic (yeast, invertebrate and vertebrate) cells. To create CBB devices, living cells are directly integrated onto the biosensor platform. The sensors report the cellular responses upon exposures to toxins and the resulting cellular signals are transduced by secondary transducers generating optical or electrical signals outputs followed by appropriate read-outs. Examples of the layout and operation of cellular biosensors for detection of selected biotoxins are summarized.
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Affiliation(s)
- Pratik Banerjee
- Division of Epidemiology, Biostatistics, and Environmental Health, School of Public Health, The University of Memphis, 338 Robison Hall, 3825 Desoto Avenue, Memphis, TN 38152, USA
| | - Spyridon Kintzios
- School of Food Science, Biotechnology and Development, Faculty of Biotechnology, Agricultural University of Athens, Iera Odos 75, Athens 11855, Greece; E-Mail:
| | - Balabhaskar Prabhakarpandian
- Bioengineering Laboratory Core, Cellular and Biomolecular Engineering, CFD Research Corporation, 701 McMillian Way NW, Huntsville, AL 35806, USA; E-Mail:
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9
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Wen T, Li NB, Luo HQ. A Turn-On Fluorescent Sensor for Sensitive and Selective Detection of Sodium Dodecyl Sulfate Based on the Eosin Y/Polyethyleneimine System. Anal Chem 2013; 85:10863-8. [DOI: 10.1021/ac402241m] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Ting Wen
- Key Laboratory on Luminescence
and Real-Time Analysis, Ministry of Education, School of Chemistry
and Chemical Engineering, Southwest University, 2, Tiansheng Road, BeiBei District, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory on Luminescence
and Real-Time Analysis, Ministry of Education, School of Chemistry
and Chemical Engineering, Southwest University, 2, Tiansheng Road, BeiBei District, Chongqing 400715, PR China
| | - Hong Qun Luo
- Key Laboratory on Luminescence
and Real-Time Analysis, Ministry of Education, School of Chemistry
and Chemical Engineering, Southwest University, 2, Tiansheng Road, BeiBei District, Chongqing 400715, PR China
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10
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Bratov A, Abramova N, Ipatov A, Merlos A. An impedimetric chemical sensor for determination of detergents residues. Talanta 2013; 106:286-92. [DOI: 10.1016/j.talanta.2012.10.083] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 10/22/2012] [Accepted: 10/29/2012] [Indexed: 11/30/2022]
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11
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Plekhanova YV, Reshetilov AN, Manolov TV, Taranova LA. Biosensor monitoring of microbial treatment of wastewater from nonylphenol polyethoxylates under flow-through conditions. APPL BIOCHEM MICRO+ 2011. [DOI: 10.1134/s0003683811090043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Xu X, Ying Y. Microbial Biosensors for Environmental Monitoring and Food Analysis. FOOD REVIEWS INTERNATIONAL 2011. [DOI: 10.1080/87559129.2011.563393] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Cell-based electrochemical biosensors for water quality assessment. Anal Bioanal Chem 2011; 400:947-64. [PMID: 21424523 DOI: 10.1007/s00216-011-4816-7] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Revised: 02/11/2011] [Accepted: 02/16/2011] [Indexed: 12/19/2022]
Abstract
During recent decades, extensive industrialisation and farming associated with improper waste management policies have led to the release of a wide range of toxic compounds into aquatic ecosystems, causing a rapid decrease of world freshwater resources and thus requiring urgent implementation of suitable legislation to define water remediation and protection strategies. In Europe, the Water Framework Directive aims to restore good qualitative and quantitative status to all water bodies by 2015. To achieve that, extensive monitoring programmes will be required, calling for rapid, reliable and cost-effective analytical methods for monitoring and toxicological impact assessment of water pollutants. In this context, whole cell biosensors appear as excellent alternatives to or techniques complementary to conventional chemical methods. Cells are easy to cultivate and manipulate, host many enzymes able to catalyse a wide range of biological reactions and can be coupled to various types of transducers. In addition, they are able to provide information about the bioavailability and the toxicity of the pollutants towards eukaryotic or prokaryotic cells. In this article, we present an overview of the use of whole cells, mainly bacteria, yeasts and algae, as sensing elements in electrochemical biosensors with respect to their practical applications in water quality monitoring, with particular emphasis on new trends and future perspectives. In contrast to optical detection, electrochemical transduction is not sensitive to light, can be used for analysis of turbid samples and does not require labelling. In some cases, it is also possible to achieve higher selectivities, even without cell modification, by operating at specific potentials where interferences are limited.
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14
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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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15
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Eltzov E, Marks RS. Whole-cell aquatic biosensors. Anal Bioanal Chem 2010; 400:895-913. [DOI: 10.1007/s00216-010-4084-y] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2010] [Revised: 07/13/2010] [Accepted: 08/02/2010] [Indexed: 11/28/2022]
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16
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Hianik T, Wang X, Tashlitsky V, Oretskaya T, Ponikova S, Antalík M, Ellis JS, Thompson M. Interaction of cationic surfactants with DNA detected by spectroscopic and acoustic wave techniques. Analyst 2010; 135:980-6. [DOI: 10.1039/c0an00070a] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Shimomura-Shimizu M, Karube I. Applications of microbial cell sensors. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2010; 118:1-30. [PMID: 20087723 DOI: 10.1007/10_2009_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Since the first microbial cell sensor was studied by Karube et al. in 1977, many types of microbial cell sensors have been developed as analytical tools. The microbial cell sensor utilizes microbes as a sensing element and a transducer. The characteristics of microbial cell sensors as sensing devices are a complete contrast to those of enzyme sensors or immunosensors, which are highly specific for the substrates of interest, although the specificity of the microbial cell sensor has been improved by genetic modification of the microbe used as the sensing element. Microbial cell sensors have the advantages of tolerance to measuring conditions, a long lifetime, and good cost performance, and have the disadvantage of a long response time. In this review, applications of microbial cell sensors are summarized.
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Affiliation(s)
- Mifumi Shimomura-Shimizu
- School of Bioscience and Biotechnology, Tokyo University of Technology, Hachioji, Tokyo 1920982, Japan
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19
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Nakamura H, Shimomura-Shimizu M, Karube I. Development of microbial sensors and their application. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2008; 109:351-394. [PMID: 18004516 DOI: 10.1007/10_2007_085] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Many types of microbial sensors have been developed as analytical tools since the first microbial sensor was studied by Karube et al. in 1977. The microbial sensor consists of a transducer and microbe as a sensing element. The characteristics of the microbial sensors are a complete contrast to those of enzyme sensors or immunosensors, which are highly specific for the substrates of interest, although the specificity of the microbial sensor has been improved by genetic modification of the microbe used as the sensing element. Microbial sensors have the advantages of tolerance to measuring conditions, a long lifetime, and cost performance, and also have the disadvantage of a long response time. In this review, the long history of microbial sensor development is summarized.
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Affiliation(s)
- Hideaki Nakamura
- School of Bionics, Tokyo University of Technology, 1404-1 Katakura, Hachioji, 192-0982 Tokyo, Japan
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Tizzard AC, Bergsma JH, Lloyd-Jones G. A resazurin-based biosensor for organic pollutants. Biosens Bioelectron 2006; 22:759-63. [PMID: 16487702 DOI: 10.1016/j.bios.2006.01.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2005] [Revised: 12/20/2005] [Accepted: 01/09/2006] [Indexed: 12/01/2022]
Abstract
A new rapid biosensor method employing the dye resazurin as an indicator of bacterial respiration has been developed to provide a rapid, facile and specific biosensor for environmental contaminants that does not rely on genetic modification techniques, is suitable for a high-throughput multiwell format, and is ideally suited to resource-constrained environmental monitoring situations. This whole-cell biosensor has been applied to the test analyte toluene using natural toluene-degrading bacteria as the biological component and is competitive with more complex recombinant approaches. The redox-driven biosensor is dependent on the catabolism of a specific compound, concomitantly reducing the redox indicator resazurin to provide the analytical signal in a whole-cell biosensor assay.
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Affiliation(s)
- Aynsley C Tizzard
- Lincoln Ventures, Lincoln University, PO Box 133, Lincoln 8152, New Zealand
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21
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Singh A, Van Hamme JD, Ward OP. Surfactants in microbiology and biotechnology: Part 2. Application aspects. Biotechnol Adv 2006; 25:99-121. [PMID: 17156965 DOI: 10.1016/j.biotechadv.2006.10.004] [Citation(s) in RCA: 336] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2005] [Revised: 10/25/2006] [Accepted: 10/25/2006] [Indexed: 10/24/2022]
Abstract
Surfactants are amphiphilic compounds which can reduce surface and interfacial tensions by accumulating at the interface of immiscible fluids and increase the solubility, mobility, bioavailability and subsequent biodegradation of hydrophobic or insoluble organic compounds. Chemically synthesized surfactants are commonly used in the petroleum, food and pharmaceutical industries as emulsifiers and wetting agents. Biosurfactants produced by some microorganisms are becoming important biotechnology products for industrial and medical applications due to their specific modes of action, low toxicity, relative ease of preparation and widespread applicability. They can be used as emulsifiers, de-emulsifiers, wetting and foaming agents, functional food ingredients and as detergents in petroleum, petrochemicals, environmental management, agrochemicals, foods and beverages, cosmetics and pharmaceuticals, and in the mining and metallurgical industries. Addition of a surfactant of chemical or biological origin accelerates or sometimes inhibits the bioremediation of pollutants. Surfactants also play an important role in enhanced oil recovery by increasing the apparent solubility of petroleum components and effectively reducing the interfacial tensions of oil and water in situ. However, the effects of surfactants on bioremediation cannot be predicted in the absence of empirical evidence because surfactants sometimes stimulate bioremediation and sometimes inhibit it. For medical applications, biosurfactants are useful as antimicrobial agents and immunomodulatory molecules. Beneficial applications of chemical surfactants and biosurfactants in various industries are discussed in this review.
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Affiliation(s)
- Ajay Singh
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
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22
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Rodriguez-Mozaz S, Lopez de Alda MJ, Barceló D. Biosensors as useful tools for environmental analysis and monitoring. Anal Bioanal Chem 2006; 386:1025-41. [PMID: 16807703 DOI: 10.1007/s00216-006-0574-3] [Citation(s) in RCA: 195] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2006] [Revised: 04/23/2006] [Accepted: 05/22/2006] [Indexed: 10/24/2022]
Abstract
Recent advances in the development and application of biosensors for environmental analysis and monitoring are reviewed in this article. Several examples of biosensors developed for relevant environmental pollutants and parameters are briefly overviewed. Special attention is paid to the application of biosensors to real environmental samples, taking into consideration aspects such as sample pretreatment, matrix effects and validation of biosensor measurements. Current trends in biosensor development are also considered and commented on in this work. In this context, nanotechnology, miniaturisation, multi-sensor array development and, especially, biotechnology arise as fast-growing areas that will have a marked influence on the development of new biosensing strategies in the near future.
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Affiliation(s)
- Sara Rodriguez-Mozaz
- Department of Environmental Chemistry, IIQAB-CSIC, C/ Jordi Girona 18-26, 08034, Barcelona, Spain.
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23
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Lei Y, Chen W, Mulchandani A. Microbial biosensors. Anal Chim Acta 2006; 568:200-10. [PMID: 17761261 DOI: 10.1016/j.aca.2005.11.065] [Citation(s) in RCA: 217] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2005] [Revised: 11/17/2005] [Accepted: 11/21/2005] [Indexed: 11/24/2022]
Abstract
A microbial biosensor is an analytical device that couples microorganisms with a transducer to enable rapid, accurate and sensitive detection of target analytes in fields as diverse as medicine, environmental monitoring, defense, food processing and safety. The earlier microbial biosensors used the respiratory and metabolic functions of the microorganisms to detect a substance that is either a substrate or an inhibitor of these processes. Recently, genetically engineered microorganisms based on fusing of the lux, gfp or lacZ gene reporters to an inducible gene promoter have been widely applied to assay toxicity and bioavailability. This paper reviews the recent trends in the development and application of microbial biosensors. Current advances and prospective future direction in developing microbial biosensor have also been discussed.
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Affiliation(s)
- Yu Lei
- Division of Chemical and Biomolecular Engineering and Centre of Biotechnology, Nanyang Technological University, Singapore 637722, Singapore.
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24
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Reshetilov AN. Microbial, Enzymatic, and Immune Biosensors for Ecological Monitoring and Control of Biotechnological Processes. APPL BIOCHEM MICRO+ 2005. [DOI: 10.1007/s10438-005-0079-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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