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Song H, Zhou X, Zhu Z. An integrated NAD +-dependent dehydrogenase-based biosensor for xylose fermentation sample analysis. Biosens Bioelectron 2021; 193:113573. [PMID: 34425520 DOI: 10.1016/j.bios.2021.113573] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/04/2021] [Accepted: 08/07/2021] [Indexed: 01/03/2023]
Abstract
NAD+-dependent dehydrogenase-based biosensors usually suffer from the low accuracy due to the interference of cofactors in the complex environment, such as fermentation samples. Herein, we demonstrate the example of an integrated biosensor device that can be applied for analyzing xylose fermentation samples. The device is composed of one chamber for the elimination of NAD+ and NADH in the fermentation broth and another chamber for the sample analysis. In the first chamber, a cyclic voltammetry method coupled with Ni foam as a working electrode was proven to be effective in removing NAD+ and NADH in the fermentation broth. In the other chamber, xylose dehydrogenase, as the recognition element, and diaphorase, used for the regeneration of bioactive NAD+ mediated by vitamin K3, were co-immobilized on the surface of the magnetic nanoparticles, which was further coated onto a magnetic glassy carbon electrode. The detection range of the constructed biosensor was from 0.5 to 10 g L-1 with a detection limit of 0.01 g L-1 at a signal-to-noise ratio of 3. Moreover, the biosensor achieved high selectivity, recovery, reproducibility, and good long-time stability when analyzing real xylose fermentation samples, suggesting its promising application potential.
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Affiliation(s)
- Haiyan Song
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin Airport Economic Area, Tianjin, 300308, PR China
| | - Xigui Zhou
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin Airport Economic Area, Tianjin, 300308, PR China
| | - Zhiguang Zhu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin Airport Economic Area, Tianjin, 300308, PR China; School of Chemical Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing, 100049, PR China; National Technology Innovation Center of Synthetic Biology, Tianjin 300308, PR China.
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2
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Chen H, Simoska O, Lim K, Grattieri M, Yuan M, Dong F, Lee YS, Beaver K, Weliwatte S, Gaffney EM, Minteer SD. Fundamentals, Applications, and Future Directions of Bioelectrocatalysis. Chem Rev 2020; 120:12903-12993. [DOI: 10.1021/acs.chemrev.0c00472] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hui Chen
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Olja Simoska
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Koun Lim
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Matteo Grattieri
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Mengwei Yuan
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Fangyuan Dong
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Yoo Seok Lee
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Kevin Beaver
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Samali Weliwatte
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Erin M. Gaffney
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Shelley D. Minteer
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
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Song H, Gao G, Ma C, Li Y, Shi J, Zhou X, Zhu Z. A hybrid system integrating xylose dehydrogenase and NAD + coupled with PtNPs@MWCNTs composite for the real-time biosensing of xylose. Analyst 2020; 145:5563-5570. [PMID: 32613959 DOI: 10.1039/d0an00880j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The wide application of xylose in the food, beverage, and pharmaceutical industries, as well as in the booming field of biorefinery, raises the demand for a rapid, accurate, and real-time xylose-sensing technique to rival the conventional methods based on chromatography, spectroscopy, and electrochemical analysis using non-specific enzymes or abiotic catalysts. Herein, a hybrid system comprising polyethylene glycerol swing-arm-tethered NAD+ and xylose dehydrogenase (XDH), coupled with platinum nanoparticles deposited on carbon nanotubes (PtNPs@MWCNTs), was constructed for the real-time sensing of xylose. The use of the PtNPs@MWCNTs composite enhanced the sensitivity of the electric response and reduced the oxidation potential of NADH significantly. Further, the NAD+ immobilization allowed an increase in its microenvironment concentration and facilitated cofactor regeneration. The screen-printed electrode cast with the hybrid system showed a wide xylose detection range of 0.5 to 10 mM or 3.33 to 66.61 mM, and a low detection limit of 0.01 mM or 3.33 mM (S/N = 3), when connected to a potentiostat or a homemade portable biosensor, respectively. The biosensor also exhibited excellent working stability as it retained 82% of its initial performance after 30 days. The analysis of various xylose-containing samples further revealed the merits of our portable xylose biosensor in real-time sensing, including its rapid response, inexpensive instrumentation, and high selectivity, suggesting its great potential in practical applications.
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Affiliation(s)
- Haiyan Song
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin Airport Economic Area, Tianjin, 300308, P. R. China.
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Kosciow K, Zahid N, Schweiger P, Deppenmeier U. Production of a periplasmic trehalase in Gluconobacter oxydans and growth on trehalose. J Biotechnol 2014; 189:27-35. [PMID: 25179874 DOI: 10.1016/j.jbiotec.2014.08.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 08/19/2014] [Accepted: 08/21/2014] [Indexed: 11/19/2022]
Abstract
Gluconobacter strains are specialized in the incomplete oxidation of monosaccharides. In contrast, growth and product formation from disaccharides is either very low or impossible. A pathway that allows growth on trehalose was rationally designed to broaden the substrate range of Gluconobacter oxydans. Expression vectors containing different signal sequences and the gene encoding alkaline phosphatase, phoA, from Escherichia coli were constructed. The signal peptide that exhibited the strongest periplasmic PhoA activity was used to generate a G. oxydans strain able to utilize the model disaccharide trehalose as a carbon and energy source by expressing the periplasmic trehalase TreA from E. coli. The strain had a doubling time of 3.7h and reached a final optical density of 1.7 when trehalose was used as a growth substrate. In comparison, the wild-type harboring the empty vector and the strain expressing treA without a signal sequence grew slowly to a final OD of only 0.15. The trehalose concentration in treA expressing cultures decreased continuously during the exponential growth phase indicating that the substrate was hydrolyzed to glucose by TreA. In contrast to the wild-type growing on glucose, the treA expression strain mainly formed acetate and 5-ketogluconate as end products rather than gluconate.
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Affiliation(s)
- K Kosciow
- Institute of Microbiology and Biotechnology, University of Bonn, 168 Meckenheimer Allee, 53115 Bonn, Germany
| | - N Zahid
- Institute of Microbiology and Biotechnology, University of Bonn, 168 Meckenheimer Allee, 53115 Bonn, Germany
| | - P Schweiger
- Missouri State University, Biology Department, 901 S. National Avenue, Springfield, MO 65897, United States
| | - U Deppenmeier
- Institute of Microbiology and Biotechnology, University of Bonn, 168 Meckenheimer Allee, 53115 Bonn, Germany.
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Co-immobilization of glucose oxidase and xylose dehydrogenase displayed whole cell on multiwalled carbon nanotube nanocomposite films modified electrode for simultaneous voltammetric detection of d-glucose and d-xylose. Biosens Bioelectron 2013. [DOI: 10.1016/j.bios.2012.10.062] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Li L, Liang B, Shi J, Li F, Mascini M, Liu A. A selective and sensitive d-xylose electrochemical biosensor based on xylose dehydrogenase displayed on the surface of bacteria and multi-walled carbon nanotubes modified electrode. Biosens Bioelectron 2012; 33:100-5. [DOI: 10.1016/j.bios.2011.12.027] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2011] [Revised: 12/14/2011] [Accepted: 12/14/2011] [Indexed: 10/14/2022]
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Liang B, Li L, Mascin M, Liu A. Construction of Xylose Dehydrogenase Displayed on the Surface of Bacteria Using Ice Nucleation Protein for Sensitive d-Xylose Detection. Anal Chem 2011; 84:275-82. [DOI: 10.1021/ac202513u] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bo Liang
- Laboratory for Biosensing, Qingdao Institute of Bioenergy & Bioprocess Technology, and Key Laboratory of Bioenergy, Chinese Academy of Sciences, 189 Songling Road Qingdao, 266101, People’s Republic of China
| | - Liang Li
- Laboratory for Biosensing, Qingdao Institute of Bioenergy & Bioprocess Technology, and Key Laboratory of Bioenergy, Chinese Academy of Sciences, 189 Songling Road Qingdao, 266101, People’s Republic of China
| | - Marco Mascin
- Dipartimento di Chimica, Universita
degli Studi di Firenze, 50019 Sesto Fiorentino, Italy
| | - Aihua Liu
- Laboratory for Biosensing, Qingdao Institute of Bioenergy & Bioprocess Technology, and Key Laboratory of Bioenergy, Chinese Academy of Sciences, 189 Songling Road Qingdao, 266101, People’s Republic of China
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8
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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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Lee BG, Rhyu KB, Yoon KJ. Amperometric study of hydrogen peroxide biosensor with butadiene rubber as immobilization matrix. J IND ENG CHEM 2010. [DOI: 10.1016/j.jiec.2010.01.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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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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12
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Abstract
The acetic acid bacteria (AAB) have important roles in food and beverage production, as well as in the bioproduction of industrial chemicals. In recent years, there have been major advances in understanding their taxonomy, molecular biology, and physiology, and in methods for their isolation and identification. AAB are obligate aerobes that oxidize sugars, sugar alcohols, and ethanol with the production of acetic acid as the major end product. This special type of metabolism differentiates them from all other bacteria. Recently, the AAB taxonomy has been strongly rearranged as new techniques using 16S rRNA sequence analysis have been introduced. Currently, the AAB are classified in ten genera in the family Acetobacteriaceae. AAB can not only play a positive role in the production of selected foods and beverages, but they can also spoil other foods and beverages. AAB occur in sugar- and alcohol-enriched environments. The difficulty of cultivation of AAB on semisolid media in the past resulted in poor knowledge of the species present in industrial processes. The first step of acetic acid production is the conversion of ethanol from a carbohydrate carried out by yeasts, and the second step is the oxidation of ethanol to acetic acid carried out by AAB. Vinegar is traditionally the product of acetous fermentation of natural alcoholic substrates. Depending on the substrate, vinegars can be classified as fruit, starch, or spirit substrate vinegars. Although a variety of bacteria can produce acetic acid, mostly members of Acetobacter, Gluconacetobacter, and Gluconobacter are used commercially. Industrial vinegar manufacturing processes fall into three main categories: slow processes, quick processes, and submerged processes. AAB also play an important role in cocoa production, which represents a significant means of income for some countries. Microbial cellulose, produced by AAB, possesses some excellent physical properties and has potential for many applications. Other products of biotransformations by AAB or their enzymes include 2-keto-L-gulonic acid, which is used for the production of vitamin C; D-tagatose, which is used as a bulking agent in food and a noncalorific sweetener; and shikimate, which is a key intermediate for a large number of antibiotics. Recently, for the first time, a pathogenic acetic acid bacterium was described, representing the newest and tenth genus of AAB.
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Affiliation(s)
- Peter Raspor
- Department of Food Science and Technology, University of Ljubljana, Ljubljana, Slovenia
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13
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Yoon KJ. Electrochemical Studies on the Voltammetric Characteristics of Hydrogen Peroxide Biosensor Immobilized by Natural Rubber. JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE 2008. [DOI: 10.5012/jkcs.2008.52.2.197] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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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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Abstract
The review summarizes the current Russian research in the field of biological sensors for detection of carbohydrates, alcohols, medicines, enzyme inhibitors, toxicants, heavy metal ions, as well as viruses and microbial cells. Some of the presented works describe the analytical parameters of biosensors; other publications provide a basis for their development. The review covers mainly publications that have appeared over the past 10 years. As a whole, the collected material gives an idea of the main tendencies of biosensor development in Russia. The review is not meant to be comprehensive but highlights the major trends in this field in the last decade.
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Affiliation(s)
- Anatoly N Reshetilov
- G. K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Russia.
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Svitel J, Tkác J, Vostiar I, Navrátil M, Stefuca V, Bucko M, Gemeiner P. Gluconobacter in biosensors: applications of whole cells and enzymes isolated from gluconobacter and acetobacter to biosensor construction. Biotechnol Lett 2006; 28:2003-10. [PMID: 17072528 DOI: 10.1007/s10529-006-9195-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2006] [Revised: 08/14/2006] [Accepted: 08/21/2006] [Indexed: 10/24/2022]
Abstract
Bacteria belonging to the genus Acetobacter and Gluconobacter, and enzymes isolated from them, have been extensively used for biosensor construction in the last decade. Bacteria used as a biocatalyst are easy to prepare and use in amperometric biosensors. They contain multiple enzyme activities otherwise not available commercially. The range of compounds analyzable by Gluconobacter biosensors includes: mono- and poly-alcohols, multiple aldoses and ketoses, several disaccharides, triacylglycerols, and complex parameters like utilizable saccharides or biological O2 demand. Here, the recent trends in Gluconobacter biosensors and current practical applications are summarized.
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Affiliation(s)
- Juraj Svitel
- Institute of Biotechnology and Food Science, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, SK 812 37, Bratislava, Slovakia.
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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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18
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Vostiar I, Ferapontova E, Gorton L. Electrical “wiring” of viable Gluconobacter oxydans cells with a flexible osmium-redox polyelectrolyte. Electrochem commun 2004. [DOI: 10.1016/j.elecom.2004.04.017] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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19
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Zayats M, Kharitonov AB, Katz E, Willner I. An integrated relay/nitrate reductase field-effect transistor for the sensing of nitrate (NO3-). Analyst 2001; 126:652-7. [PMID: 11394308 DOI: 10.1039/b102363m] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An integrated enzyme-functionalized field-effect transistor (ENFET) device for the sensing of nitrate ions is described. An aminosiloxane-functionalized gate interface is modified with N-methyl-N'-(carboxyalkyl)-4,4'-bipyridinium relay units. The complex formed between nitrate reductase and the bipyridinium units on the gate surface is crosslinked with glutaric dialdehyde to yield a stable relay-enzyme layer on the gate interface. In the presence of sodium dithionite as electron donor, the biocatalyzed reduction of nitrate to nitrite ion is stimulated. The ratio between the oxidized and reduced states of the bipyridinium sites regulates the gate potential, and is controlled by the concentration of NO3- ions in the system. The effect of the chain length tethering the N-methyl-N'-(carboxyalkyl)-4,4'-bipyridinium units to the gate surface on the biocatalyzed reduction of NO3- ions, and on the NO3- FET sensor performance is discussed. The devices that include the bipyridinium units tethered to the gate interface with methylene chain length, -(CH2)n, where n > or = 7, reveal a detection limit of 7 x 10(-5) M for nitrate and a sensitivity of 52 +/- 2 mV dec-1. The response time of the device is as low as 50 s, and the operational time of the system is ca. 85 s. We estimate the surface coverage of nitrate reductase on the gate surface to be ca. 1.2 x 10(-12) mol cm-2.
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Affiliation(s)
- M Zayats
- Institute of Chemistry, Hebrew University of Jerusalem, Jerusalem 91904, Israel
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Kharitonov AB, Wasserman J, Katz E, Willner I. The Use of Impedance Spectroscopy for the Characterization of Protein-Modified ISFET Devices: Application of the Method for the Analysis of Biorecognition Processes. J Phys Chem B 2001. [DOI: 10.1021/jp0045383] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrei B. Kharitonov
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Julian Wasserman
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Eugenii Katz
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Itamar Willner
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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Seki A, Ikeda SI, Kubo I, Karube I. Biosensors based on light-addressable potentiometric sensors for urea, penicillin and glucose. Anal Chim Acta 1998. [DOI: 10.1016/s0003-2670(98)00364-x] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Reshetilov AN, Lobanov AV, Morozova NO, Gordon SH, Greene RV, Leathers TD. Detection of ethanol in a two-component glucose/ethanol mixture using a nonselective microbial sensor and a glucose enzyme electrode. Biosens Bioelectron 1998; 13:787-93. [PMID: 9828373 DOI: 10.1016/s0956-5663(98)00043-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chemometric theory was applied to a microbial sensor for determinations of ethanol in the presence of glucose. Microbial sensors, consisting of Gluconobacter oxydans cells immobilized on Clark-type amperometric oxygen electrodes, exhibited good sensitivity but low selectivity toward ethanol and glucose. An Eksan-G commercial glucose analyzer was used as a second sensor for multivariate calibration and analyses. Microbial sensors exhibited nearly complete additivity for total glucose plus ethanol concentrations from 0.0 to 0.6 mM. Within this linear range, chemometric analyses provided estimates of ethanol concentration with measurement errors of less than 8%. Multivariate calibration thus is a promising approach to enhance the usefulness of microbial sensors.
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Affiliation(s)
- A N Reshetilov
- Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, Russia
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24
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Reshetilov AN, Efremov DA, Iliasov PV, Boronin AM, Kukushskin NI, Greene RV, Leathers TD. Effects of high oxygen concentrations on microbial biosensor signals. Hyperoxygenation by means of perfluorodecalin. Biosens Bioelectron 1998; 13:795-9. [PMID: 9828374 DOI: 10.1016/s0956-5663(98)00044-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Amperometric biosensors register oxygen depletion in response to analyte catabolism, and thus are limited by the availability of dissolved oxygen. Microbial sensors containing immobilized cells of Gluconobacter oxydans were hyperoxygenated to 400% of control levels and the effects on sensor responses to glucose were determined. Oxygenated perfluorodecalin (a completely fluorinated organic substance) was as effective in hyperoxygenation as direct sparging with O2, increasing sensor base medium oxygen concentrations from 9.3 to 37 mg/l. Hyperoxygenation enhanced maximal biosensor response amplitudes, particularly at high cell loading densities. Maximal response rates were also improved, although less dramatically. Results suggest that hyperoxygenation may be a new general approach for modulating biosensor responses.
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Affiliation(s)
- A N Reshetilov
- Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, Russia
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25
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Membrane-bound dehydrogenases ofGluconobacter oxydans: Sensors for measuring sugars, alcohols, and polyoles. Bull Exp Biol Med 1998. [DOI: 10.1007/bf02446066] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Abstract
The use of modern analytical online methods such as two-dimensional fluorescence measurements gives new insights into bioprocesses. With the resulting data, it is not only possible to better understand and document, for example, biotransformations, but also to develop efficient control strategies that lead to better productivity and lower costs.
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27
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Reshetilov AN, Iliasov PV, Donova MV, Dovbnya DV, Boronin AM, Leathers TD, Greene RV. Evaluation of a Gluconobacter oxydans whole cell biosensor for amperometric detection of xylose. Biosens Bioelectron 1997. [DOI: 10.1016/s0956-5663(97)85342-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
Concerning speed, cost and on-line capabilities, biosensors offer attractive alternatives to existing methods for food analysis. They make monitoring and control of manufacturing processes possible. Furthermore, portable biosensors could be used for monitoring in manufacturing, retail and distribution of foods. An overview is given about existing biosensors for foodstuffs that could find applications in food industry.
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Affiliation(s)
- A Warsinke
- Institute of Biochemistry and Molecular Physiology, University of Potsdam, MDC Max-Delbrück-Center, Berlin, Germany
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