1
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Zhuang L, Gong J, Shen Q, Yang J, Song C, Liu Q, Zhao B, Zhang Y, Zhu M. Advances in detection methods for viable Salmonella spp.: current applications and challenges. ANAL SCI 2023; 39:1643-1660. [PMID: 37378821 DOI: 10.1007/s44211-023-00384-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023]
Abstract
Salmonella is a common intestinal pathogen that can cause food poisoning and intestinal disease. The high prevalence of Salmonella necessitates efficient and sensitive methods for its identification, detection, and monitoring, especially of viable Salmonella. Conventional culture methods need to be more laborious and time-consuming. And they are relatively limited in their ability to detect Salmonella in the viable but non-culturable status if present in the sample to be tested. As a result, there is an increasing need for rapid and accurate techniques to detect viable Salmonella spp. This paper reviewed the status and progress of various methods reported in recent years that can be used to detect viable Salmonella, such as culture-based methods, molecular methods targeting RNAs and DNAs, phage-based methods, biosensors, and some techniques that have the potential for future application. This review can provide researchers with a reference for additional method options and help facilitate the development of rapid and accurate assays. In the future, viable Salmonella detection approaches will become more stable, sensitive, and fast and are expected to play a more significant role in food safety and public health.
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Affiliation(s)
- Linlin Zhuang
- School of Animal Husbandry and Veterinary Medicine, Jiangsu Vocational College of Agriculture and Forestry, Jurong, 212400, People's Republic of China
- State Key Laboratory of Digital Medical Engineering, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering and Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Nanjing, 210096, People's Republic of China
| | - Jiansen Gong
- Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou, 225125, People's Republic of China
| | - Qiuping Shen
- School of Animal Husbandry and Veterinary Medicine, Jiangsu Vocational College of Agriculture and Forestry, Jurong, 212400, People's Republic of China
| | - Jianbo Yang
- School of Animal Husbandry and Veterinary Medicine, Jiangsu Vocational College of Agriculture and Forestry, Jurong, 212400, People's Republic of China
| | - Chunlei Song
- School of Animal Husbandry and Veterinary Medicine, Jiangsu Vocational College of Agriculture and Forestry, Jurong, 212400, People's Republic of China
| | - Qingxin Liu
- School of Animal Husbandry and Veterinary Medicine, Jiangsu Vocational College of Agriculture and Forestry, Jurong, 212400, People's Republic of China
| | - Bin Zhao
- School of Animal Husbandry and Veterinary Medicine, Jiangsu Vocational College of Agriculture and Forestry, Jurong, 212400, People's Republic of China
| | - Yu Zhang
- State Key Laboratory of Digital Medical Engineering, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering and Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Nanjing, 210096, People's Republic of China.
| | - Mengling Zhu
- School of Animal Husbandry and Veterinary Medicine, Jiangsu Vocational College of Agriculture and Forestry, Jurong, 212400, People's Republic of China.
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2
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Zhou Z, Zhang X, Zhou T, Huang F, Chen J. Quartz Crystal Microbalance Technology Coupled with Impedance for the Dynamic Monitoring of the Cardiomyocyte Beating Function and Drug Screening. BIOSENSORS 2023; 13:198. [PMID: 36831964 PMCID: PMC9953959 DOI: 10.3390/bios13020198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/05/2023] [Accepted: 01/10/2023] [Indexed: 06/18/2023]
Abstract
The main sensing techniques used to study myocardial pulsation are electrical impedance sensing (EIS) and by quartz crystal microbalance (QCM). While electrical impedance technology is the gold standard for the study of myocardial pulsation, the clinical application of drugs is being followed up in real time additionally, thus, QCM technology needs to be further developed as a very important class of quality sensor technology. Moreover, the application of EIS, in combination with the QCM, for monitoring myocardial pulsation, has been rarely reported. In this paper, a series of cell growth and adhesion conditions were optimized using rat primary cardiomyocytes, and QCM was used in combination with EIS to monitor the adhesion and the myocardial pulsation ability of the cells in real time. Furthermore, cardiomyocytes that adhered to the QCM and EIS were treated with isoprenaline (ISO), a positive inotropic drug, and verapamil (VRP), a negative inotropic drug. Next, the cell index (CI)-time (T) plots, beating amplitude (BA) and beating rate (BR) of the cardiomyocytes were calculated and changes in these parameters, before and after, dosing were evaluated. The results showed that the QCM technique results were not only consistent with the results obtained with EIS, but also that the QCM technique had a certain degree of sensitivity for the calculation of cardiomyocyte beating. Thus, our findings validate the reliability and validity of the QCM technique for measuring cardiomyocyte beating and drug testing. We hope that further studies would evaluate the application of the QCM technology for clinical use.
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Affiliation(s)
- Zhen Zhou
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, China
| | - Xiaoyu Zhang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, China
| | - Tiean Zhou
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, China
| | - Fushen Huang
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, China
- College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
| | - Jinjun Chen
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, China
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3
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Giordano GF, Ferreira LF, Bezerra ÍRS, Barbosa JA, Costa JNY, Pimentel GJC, Lima RS. Machine learning toward high-performance electrochemical sensors. Anal Bioanal Chem 2023:10.1007/s00216-023-04514-z. [PMID: 36637495 PMCID: PMC9838410 DOI: 10.1007/s00216-023-04514-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/30/2022] [Accepted: 01/02/2023] [Indexed: 01/14/2023]
Abstract
The so-coined fourth paradigm in science has reached the sensing area, with the use of machine learning (ML) toward data-driven improvements in sensitivity, reproducibility, and accuracy, along with the determination of multiple targets from a single measurement using multi-output regression models. Particularly, the use of supervised ML models trained on large data sets produced by electrical and electrochemical bio/sensors has emerged as an impacting trend in the literature by allowing accurate analyses even in the presence of usual issues such as electrode fouling, poor signal-to-noise ratio, chemical interferences, and matrix effects. In this trend article, apart from an outlook for the coming years, we present examples from the literature that demonstrate how helpful ML algorithms can be for dispensing the adoption of experimental methods to address the aforesaid interfering issues, ultimately contributing to translate testing technologies into on-site, practical, and daily applications.
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Affiliation(s)
- Gabriela F. Giordano
- Brazilian Nanotechnology National Laboratory, Brazilian Center for Research in Energy and Materials, Campinas, São Paulo 13083-100 Brazil
| | - Larissa F. Ferreira
- Brazilian Nanotechnology National Laboratory, Brazilian Center for Research in Energy and Materials, Campinas, São Paulo 13083-100 Brazil ,Institute of Chemistry, University of Campinas, Campinas, São Paulo 13083-970 Brazil
| | - Ítalo R. S. Bezerra
- Brazilian Nanotechnology National Laboratory, Brazilian Center for Research in Energy and Materials, Campinas, São Paulo 13083-100 Brazil ,Center for Natural and Human Sciences, Federal University of ABC, Santo André, São Paulo 09210-580 Brazil
| | - Júlia A. Barbosa
- Brazilian Nanotechnology National Laboratory, Brazilian Center for Research in Energy and Materials, Campinas, São Paulo 13083-100 Brazil ,São Carlos Institute of Chemistry, University of São Paulo, São Carlos, São Paulo 13566-590 Brazil
| | - Juliana N. Y. Costa
- Brazilian Nanotechnology National Laboratory, Brazilian Center for Research in Energy and Materials, Campinas, São Paulo 13083-100 Brazil ,Center for Natural and Human Sciences, Federal University of ABC, Santo André, São Paulo 09210-580 Brazil
| | - Gabriel J. C. Pimentel
- Brazilian Nanotechnology National Laboratory, Brazilian Center for Research in Energy and Materials, Campinas, São Paulo 13083-100 Brazil ,School of Sciences, São Paulo State University, Bauru, São Paulo 17033-360 Brazil
| | - Renato S. Lima
- Brazilian Nanotechnology National Laboratory, Brazilian Center for Research in Energy and Materials, Campinas, São Paulo 13083-100 Brazil ,Institute of Chemistry, University of Campinas, Campinas, São Paulo 13083-970 Brazil ,Center for Natural and Human Sciences, Federal University of ABC, Santo André, São Paulo 09210-580 Brazil ,São Carlos Institute of Chemistry, University of São Paulo, São Carlos, São Paulo 13566-590 Brazil
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4
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Chen YS, Huang CH, Pai PC, Seo J, Lei KF. A Review on Microfluidics-Based Impedance Biosensors. BIOSENSORS 2023; 13:bios13010083. [PMID: 36671918 PMCID: PMC9855525 DOI: 10.3390/bios13010083] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/20/2022] [Accepted: 12/28/2022] [Indexed: 05/30/2023]
Abstract
Electrical impedance biosensors are powerful and continuously being developed for various biological sensing applications. In this line, the sensitivity of impedance biosensors embedded with microfluidic technologies, such as sheath flow focusing, dielectrophoretic focusing, and interdigitated electrode arrays, can still be greatly improved. In particular, reagent consumption reduction and analysis time-shortening features can highly increase the analytical capabilities of such biosensors. Moreover, the reliability and efficiency of analyses are benefited by microfluidics-enabled automation. Through the use of mature microfluidic technology, complicated biological processes can be shrunk and integrated into a single microfluidic system (e.g., lab-on-a-chip or micro-total analysis systems). By incorporating electrical impedance biosensors, hand-held and bench-top microfluidic systems can be easily developed and operated by personnel without professional training. Furthermore, the impedance spectrum provides broad information regarding cell size, membrane capacitance, cytoplasmic conductivity, and cytoplasmic permittivity without the need for fluorescent labeling, magnetic modifications, or other cellular treatments. In this review article, a comprehensive summary of microfluidics-based impedance biosensors is presented. The structure of this article is based on the different substrate material categorizations. Moreover, the development trend of microfluidics-based impedance biosensors is discussed, along with difficulties and challenges that may be encountered in the future.
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Affiliation(s)
- Yu-Shih Chen
- Department of Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan
| | - Chun-Hao Huang
- Department of Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan
| | - Ping-Ching Pai
- Department of Radiation Oncology, Linkou Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
| | - Jungmok Seo
- Department of Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Electrical & Electronic Engineering, Yonsei University, Seoul 120-749, Republic of Korea
| | - Kin Fong Lei
- Department of Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Radiation Oncology, Linkou Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
- Department of Electrical & Electronic Engineering, Yonsei University, Seoul 120-749, Republic of Korea
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5
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Oh HE, Eathorne S, Jones MA. Use of biosensor technology in analysing milk and dairy components: A review. INT J DAIRY TECHNOL 2022. [DOI: 10.1111/1471-0307.12900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Cho H, Shim S, Cho WW, Cho S, Baek H, Lee SM, Shin DS. Electrochemical Impedance-Based Biosensors for the Label-Free Detection of the Nucleocapsid Protein from SARS-CoV-2. ACS Sens 2022; 7:1676-1684. [PMID: 35653260 PMCID: PMC9211059 DOI: 10.1021/acssensors.2c00317] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 05/19/2022] [Indexed: 02/06/2023]
Abstract
Diagnosis of coronavirus disease (COVID-19) is important because of the emergence and global spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Real-time polymerase chain reaction (PCR) is widely used to diagnose COVID-19, but it is time-consuming and requires sending samples to test centers. Thus, the need to detect antigens for rapid on-site diagnosis rather than PCR is increasing. We quantified the nucleocapsid (N) protein in SARS-CoV-2 using an electro-immunosorbent assay (El-ISA) and a multichannel impedance analyzer with a 96-interdigitated microelectrode sensor (ToAD). The El-ISA measures impedance signals from residual detection antibodies after sandwich assays and thus offers highly specific, label-free detection of the N protein with low cross-reactivity. The ToAD sensor enables the real-time electrochemical detection of multiple samples in conventional 96-well plates. The limit of detection for the N protein was 0.1 ng/mL with a detection range up to 10 ng/mL. This system did not detect signals for the S protein. While this study focused on detecting the N protein in SARS-CoV-2, our system can also be widely applicable to detecting various biomolecules involved in antigen-antibody interactions.
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Affiliation(s)
- Hana Cho
- Department
of Chemical and Biological Engineering, Sookmyung Women’s University, Yongsan-gu, Seoul 04310, Republic of Korea
- Industry
Collaboration Center, Sookmyung Women’s
University, Yongsan-gu, Seoul 04310, Republic
of Korea
| | - Suhyun Shim
- Department
of Chemical and Biological Engineering, Sookmyung Women’s University, Yongsan-gu, Seoul 04310, Republic of Korea
| | - Won Woo Cho
- Cantis
Inc., Ansan-si, Gyeonggi-do 15588, Republic of Korea
| | - Sungbo Cho
- Department
of Electronics Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
| | - Hanseung Baek
- Comprehensive
Dental Care Center, Purme Nexon Children
Rehabilitation Hospital, Mapo-gu, Seoul 03918, Republic
of Korea
| | - Sang-Myung Lee
- Cantis
Inc., Ansan-si, Gyeonggi-do 15588, Republic of Korea
| | - Dong-Sik Shin
- Department
of Chemical and Biological Engineering, Sookmyung Women’s University, Yongsan-gu, Seoul 04310, Republic of Korea
- Industry
Collaboration Center, Sookmyung Women’s
University, Yongsan-gu, Seoul 04310, Republic
of Korea
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7
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Park JH, Song Z, Bong JH, Kim HR, Kim MJ, Choi KH, Shin SS, Kang MJ, Lee DY, Pyun JC. Electrochemical One-Step Immunoassay Based on Switching Peptides and Pyrolyzed Carbon Electrodes. ACS Sens 2022; 7:215-224. [PMID: 34984905 DOI: 10.1021/acssensors.1c01998] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Switching peptides were designed to bind reversibly to the binding pocket of antibodies (IgG) by interacting with frame regions (FRs). These peptides can be quantitatively released when antigens bind to IgG. As FRs have conserved amino acid sequences, switching peptides can be used as antibodies for different antigens and different source animals. In this study, an electrochemical one-step immunoassay was conducted using switching peptides labeled with ferrocene for the quantitative measurement of analytes. For the effective amperometry of the switching peptides labeled with ferrocene, a pyrolyzed carbon electrode was prepared by pyrolysis of the parylene-C film. The feasibility of the pyrolyzed carbon electrode for the electrochemical one-step immunoassay was determined by analyzing its electrochemical properties, such as its low double-layer capacitance (Cdl), high electron transfer rate (kapp), and wide electrochemical window. In addition, the factors influencing the amperometry of switching peptides labeled with ferrocene were analyzed according to the hydrodynamic radius, the number of intrahydrogen bonds, dipole moments, and diffusion coefficients. Finally, the applicability of the electrochemical one-step immunoassay for the medical diagnosis of the human hepatitis B surface antigen (hHBsAg) was assessed.
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Affiliation(s)
- Jun-Hee Park
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Zhiquan Song
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Ji-Hong Bong
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Hong-Rae Kim
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Moon-Ju Kim
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Kyung-Hak Choi
- OPTOLANE Technologies Inc., 20 Pangyoyeok-ro 241beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do 13494, Republic of Korea
| | - Seung-Shick Shin
- OPTOLANE Technologies Inc., 20 Pangyoyeok-ro 241beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do 13494, Republic of Korea
| | - Min-Jung Kang
- Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Do Young Lee
- OPTOLANE Technologies Inc., 20 Pangyoyeok-ro 241beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do 13494, Republic of Korea
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-gu, Seoul 03722, Republic of Korea
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8
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Growth and Drug Interaction Monitoring of NIH 3T3 Cells by Image Analysis and Capacitive Biosensor. MICROMACHINES 2021; 12:mi12101248. [PMID: 34683298 PMCID: PMC8540853 DOI: 10.3390/mi12101248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/08/2021] [Accepted: 10/11/2021] [Indexed: 11/23/2022]
Abstract
Capacitive biosensors are manufactured on glass slides using the semiconductor process to monitor cell growth and cell–drug interactions in real time. Capacitance signals are continuously monitored for each 10 min interval during a 48 h period, with the variations of frequency from 1 kHz to 1 MHz. The capacitance values showed a gradual increase with the increase in NIH 3T3 cell numbers. After 48 h of growth, 6.67 μg/mL puromycin is injected for the monitoring of the cell–drug interaction. The capacitance values rapidly increased during a period of about 10 h, reflecting the rapid increase in the cell numbers. In this study, we monitored the state of cells and the cell–drug interactions using the developed capacitive biosensor. Additionally, we monitored the state of cell behavior using a JuLiTM Br&FL microscope. The monitoring of cell state by means of a capacitive biosensor is more sensitive than confluence measuring using a JuLiTM Br&FL microscope image. The developed capacitive biosensor could be applied in a wide range of bio-medical areas; for example, non-destructive real-time cell growth and cell–drug interaction monitoring.
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9
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Novel Micro-Nano Optoelectronic Biosensor for Label-Free Real-Time Biofilm Monitoring. BIOSENSORS-BASEL 2021; 11:bios11100361. [PMID: 34677317 PMCID: PMC8533833 DOI: 10.3390/bios11100361] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/18/2021] [Accepted: 09/27/2021] [Indexed: 12/02/2022]
Abstract
According to the World Health Organization forecasts, AntiMicrobial Resistance (AMR) is expected to become one of the leading causes of death worldwide in the following decades. The rising danger of AMR is caused by the overuse of antibiotics, which are becoming ineffective against many pathogens, particularly in the presence of bacterial biofilms. In this context, non-destructive label-free techniques for the real-time study of the biofilm generation and maturation, together with the analysis of the efficiency of antibiotics, are in high demand. Here, we propose the design of a novel optoelectronic device based on a dual array of interdigitated micro- and nanoelectrodes in parallel, aiming at monitoring the bacterial biofilm evolution by using optical and electrical measurements. The optical response given by the nanostructure, based on the Guided Mode Resonance effect with a Q-factor of about 400 and normalized resonance amplitude of about 0.8, allows high spatial resolution for the analysis of the interaction between planktonic bacteria distributed in small colonies and their role in the biofilm generation, calculating a resonance wavelength shift variation of 0.9 nm in the presence of bacteria on the surface, while the electrical response with both micro- and nanoelectrodes is necessary for the study of the metabolic state of the bacteria to reveal the efficacy of antibiotics for the destruction of the biofilm, measuring a current change of 330 nA when a 15 µm thick biofilm is destroyed with respect to the absence of biofilm.
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Rose L, Mary XA, Johnson I, Srinivasan G, Priya L, Bhagavathsingh J. Polyaza functionalized graphene oxide nanomaterial based sensor for Escherichia coli detection in water matrices. Sci Rep 2021; 11:16872. [PMID: 34413450 PMCID: PMC8377045 DOI: 10.1038/s41598-021-96539-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 07/26/2021] [Indexed: 11/30/2022] Open
Abstract
Water quality is widely discussed owing to its significance in public health due to the inability to access clean water. Waterborne diseases account for the presence of pathogens like Escherichia coli (E. coli) in drinking water in the environmental community. Owing to the rapid increase of such bacterial microorganisms, a cost-effective sensor setup has been developed. Herein, we demonstrate the amine-functionalized graphene oxide (fGO) based 2D nanomaterial used to graft E. coli on its surface. The comparative analysis of the deposition of nanosheets on the glass substrate and PDMS was executed. The impedance variations of GO-based nanosensor at various concentrations of E. coli were performed and their potential difference was recorded. It was observed that the impedance changes inversely with the bacterial concentrations and was fed to the Arduino microcontroller. The experimental setup was standardized for the range of 0.01 Hz to 100 kHz. The obtained analog data was programmed with a microcontroller and the bacterial concentration in colony-forming units was displayed. The real-time analysis showsthe low-level detection of E. coli in aquatic environments. Experiments were conducted using the developed nanosensor to test the efficiency in complex water matrices and whose behavior changes with various physical, chemical, and environmental factors.
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Affiliation(s)
- Lina Rose
- Department of Biomedical Engineering, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, 641 114, India
| | - X Anitha Mary
- Department of Robotics Engineering, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, 641 114, India
| | - I Johnson
- Department of Millets, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, 641003, India
| | - Ganesh Srinivasan
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, 641 114, India
| | - Lakshmi Priya
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, 641 114, India
| | - Jebasingh Bhagavathsingh
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, 641 114, India.
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11
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Monitoring microbial growth on a microfluidic lab-on-chip with electrochemical impedance spectroscopic technique. Biomed Microdevices 2021; 23:26. [PMID: 33885989 DOI: 10.1007/s10544-021-00564-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2021] [Indexed: 12/17/2022]
Abstract
A continuous rise in the wastes from industrial effluents, bio-waste, and pharmaceuticals has deteriorated surface water and drinking water sources. Standard laboratory tests of total coliform are time-consuming and logistically inefficient for field data generation. Better and portable sensing technologies are needed. This paper reports an electrical impedance spectroscopic technique incorporated in a micro-fluidic chip with interdigitated microelectrodes to monitor the growth of microbial cells. Lag, log, and stationary phases of Escherichia coli cell growth with an integrated electrode are successfully detected, for samples of reverse osmosis water, standard treated tap water, and recycled water respectively. The results indicate that reverse osmosis water has a higher probability of contamination with bacterial pathogens compared to the other two types of water samples when subjected to the same amount of added nutrients. The statistical analysis shows a possible single detection range with higher-order regression, and repeat use of a single chip with the electrode was found to be within an acceptable limit. The interdigitated electrodes exposed to in-situ cell growth conditions and repeated electrical measurements have shown a promise for possible periodic or continuous monitoring. The paper further identifies several complimentary analysis methodologies that are robust towards phase noise in the measured impedance and are suited particularly for early-stage detection of bacterial contamination. The cell adhesion tendencies over the microelectrode due to the electric field need to be further analyzed.
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12
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Pfeffer C, Liang Y, Grothe H, Wolf B, Brederlow R. Towards Easy-to-Use Bacteria Sensing: Modeling and Simulation of a New Environmental Impedimetric Biosensor in Fluids. SENSORS (BASEL, SWITZERLAND) 2021; 21:1487. [PMID: 33670022 PMCID: PMC7926956 DOI: 10.3390/s21041487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/17/2021] [Accepted: 02/19/2021] [Indexed: 11/20/2022]
Abstract
Conventional pathogenic bacteria-detection methods are lab-bound, time-consuming and need trained personnel. Microelectrodes can be used to recognize harmful microorganisms by dielectric impedance spectroscopy. However, crucial for this spectroscopy method are the spatial dimensions and layout of the electrodes, as the corresponding distribution of the electric field defines the sensor system parameters such as sensitivity, SNR, and dynamic range. Therefore, a variety of sensor models are created and evaluated. FEM simulations in 2D and 3D are conducted for this impedimetric sensor. The authors tested differently shaped structures, verified the linear influence of the excitation amplitude and developed a mathematical concept for a quality factor that practically allows us to distinguish arbitrary sensor designs and layouts. The effect of guard electrodes blocking outer influences on the electric field are investigated, and essential configurations are explored. The results lead to optimized electronic sensors in terms of geometrical dimensions. Possible material choices for real sensors as well as design and layout recommendations are presented.
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Affiliation(s)
- Christian Pfeffer
- Department of Electrical and Computer Engineering, Technical University of Munich, 80333 Munich, Germany; (Y.L.); (H.G.); (R.B.)
| | - Yue Liang
- Department of Electrical and Computer Engineering, Technical University of Munich, 80333 Munich, Germany; (Y.L.); (H.G.); (R.B.)
| | - Helmut Grothe
- Department of Electrical and Computer Engineering, Technical University of Munich, 80333 Munich, Germany; (Y.L.); (H.G.); (R.B.)
| | - Bernhard Wolf
- Steinbeistransferzentrum für Medizinische Elektronik und Lab-on-Chip Systeme, 80802 Munich, Germany;
| | - Ralf Brederlow
- Department of Electrical and Computer Engineering, Technical University of Munich, 80333 Munich, Germany; (Y.L.); (H.G.); (R.B.)
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13
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Tolouei NE, Ghamari S, Shavezipur M. Development of circuit models for electrochemical impedance spectroscopy (EIS) responses of interdigitated MEMS biochemical sensors. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114598] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Subramanian S, Huiszoon RC, Chu S, Bentley WE, Ghodssi R. Microsystems for biofilm characterization and sensing - A review. Biofilm 2020; 2:100015. [PMID: 33447801 PMCID: PMC7798443 DOI: 10.1016/j.bioflm.2019.100015] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/11/2019] [Accepted: 11/26/2019] [Indexed: 11/30/2022] Open
Abstract
Biofilms are the primary cause of clinical bacterial infections and are impervious to typical amounts of antibiotics, necessitating very high doses for elimination. Therefore, it is imperative to have suitable methods for characterization to develop novel methods of treatment that can complement or replace existing approaches using significantly lower doses of antibiotics. This review presents some of the current developments in microsystems for characterization and sensing of bacterial biofilms. Initially, we review current standards for studying biofilms that are based on invasive and destructive end-point biofilm characterization. Additionally, biofilm formation and growth is extremely sensitive to various growth and environmental parameters that cause large variability in biofilms between repeated experiments, making it very difficult to compare experimental repeats and characterize the temporal characteristics of these organisms. To address these challenges, recent developments in the field have moved toward systems and miniature devices that can aid in the non-invasive characterization of bacterial biofilms. Our review focuses on several types of microsystems for biofilm evaluation including optical, electrochemical, and mechanical systems. This review will show how these devices can lead to better understanding of the physiology and function of these communities of bacteria, which can eventually lead to the development of novel treatments that do not rely on high-dosage antibiotics.
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Affiliation(s)
- Sowmya Subramanian
- MEMS Sensors and Actuators Laboratory, University of Maryland, College Park, MD, USA
- Department of Electrical and Computer Engineering, University of Maryland, College Park, MD, USA
- Institute for Systems Research, University of Maryland, College Park, MD, USA
| | - Ryan C. Huiszoon
- MEMS Sensors and Actuators Laboratory, University of Maryland, College Park, MD, USA
- Institute for Systems Research, University of Maryland, College Park, MD, USA
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA
- Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD, USA
| | - Sangwook Chu
- MEMS Sensors and Actuators Laboratory, University of Maryland, College Park, MD, USA
- Institute for Systems Research, University of Maryland, College Park, MD, USA
- Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD, USA
| | - William E. Bentley
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA
- Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD, USA
| | - Reza Ghodssi
- MEMS Sensors and Actuators Laboratory, University of Maryland, College Park, MD, USA
- Department of Electrical and Computer Engineering, University of Maryland, College Park, MD, USA
- Institute for Systems Research, University of Maryland, College Park, MD, USA
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA
- Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD, USA
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15
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Ramiah Rajasekaran P, Chapin AA, Quan DN, Herberholz J, Bentley WE, Ghodssi R. 3D-Printed electrochemical sensor-integrated transwell systems. MICROSYSTEMS & NANOENGINEERING 2020; 6:100. [PMID: 34567709 PMCID: PMC8433167 DOI: 10.1038/s41378-020-00208-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 07/03/2020] [Accepted: 08/16/2020] [Indexed: 05/05/2023]
Abstract
This work presents a 3D-printed, modular, electrochemical sensor-integrated transwell system for monitoring cellular and molecular events in situ without sample extraction or microfluidics-assisted downstream omics. Simple additive manufacturing techniques such as 3D printing, shadow masking, and molding are used to fabricate this modular system, which is autoclavable, biocompatible, and designed to operate following standard operating protocols (SOPs) of cellular biology. Integral to the platform is a flexible porous membrane, which is used as a cell culture substrate similarly to a commercial transwell insert. Multimodal electrochemical sensors fabricated on the membrane allow direct access to cells and their products. A pair of gold electrodes on the top side of the membrane measures impedance over the course of cell attachment and growth, characterized by an exponential decrease (~160% at 10 Hz) due to an increase in the double layer capacitance from secreted extracellular matrix (ECM) proteins. Cyclic voltammetry (CV) sensor electrodes, fabricated on the bottom side of the membrane, enable sensing of molecular release at the site of cell culture without the need for downstream fluidics. Real-time detection of ferrocene dimethanol injection across the membrane showed a three order-of-magnitude higher signal at the membrane than in the bulk media after reaching equilibrium. This modular sensor-integrated transwell system allows unprecedented direct, real-time, and noninvasive access to physical and biochemical information, which cannot be obtained in a conventional transwell system.
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Affiliation(s)
| | - Ashley Augustiny Chapin
- Institute for Systems Research, University of Maryland, College Park, MD USA
- Fischell Department of Bioengineering, University of Maryland, College Park, MD USA
| | - David N. Quan
- Fischell Department of Bioengineering, University of Maryland, College Park, MD USA
| | - Jens Herberholz
- Department of Psychology and Neuroscience and Cognitive Science Program, University of Maryland, College Park, MD USA
| | - William E. Bentley
- Fischell Department of Bioengineering, University of Maryland, College Park, MD USA
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD USA
- Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD USA
| | - Reza Ghodssi
- Institute for Systems Research, University of Maryland, College Park, MD USA
- Fischell Department of Bioengineering, University of Maryland, College Park, MD USA
- Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD USA
- Department of Electrical and Computer Engineering, University of Maryland, College Park, MD USA
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16
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Wang J, Liu Q, Dong D, Hu H, Wu B, Ren H. In-situ monitoring of the unstable bacterial adhesion process during wastewater biofilm formation: A comprehensive study. ENVIRONMENT INTERNATIONAL 2020; 140:105722. [PMID: 32474216 DOI: 10.1016/j.envint.2020.105722] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/03/2020] [Accepted: 04/03/2020] [Indexed: 05/06/2023]
Abstract
The initial bacterial adhesion phase is a pivotal and unstable step in the formation of biofilms. The initiation of biofilm formation is an unstable process caused by the reversible adhesion of bacteria, which is always time-consuming and yet to be elucidated. In this study, impedance-based real time cell analysis (RTCA) was employed to comprehensively investigate the initial bacterial adhesion process. Results showed that the time required for the unstable adhesion process was significantly (p < 0.05) reduced by increasing the initial concentration of bacteria, which is mainly attributed to the large deposition rate of bacteria at high concentrations. In addition, the unstable adhesion process is also regulated by shear stress, derived in this work from orbital shaking. Shear stress improves the reversibility of unstable bacterial attachment. Furthermore, attachment characteristics during the unstable phase vary between different species of bacteria (Sphingomonas rubra, Nakamurella multipartita and mixed bacteria). The S. rubra strain and mixed culture were more prone to adhere to the substratum surface during the unstable process, which was attributed to the smaller xDLVO energy barrier and motility of species in comparison with N. multipartita. Meanwhile, the molecular composition of extracellular polymeric substances (EPS) in the initial attachment phase presented a significant difference in expressed proteins, indicating the important role of proteins in EPS that strengthen bacterial adhesion. Overall, these findings suggest that during the biofilm reactor start-up process, seed sludge conditions, including the bacterial concentration, composition and hydraulics, need to be carefully considered.
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Affiliation(s)
- Jinfeng Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China
| | - Qiuju Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China
| | - Deyuan Dong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China
| | - Haidong Hu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China
| | - Bing Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China
| | - Hongqiang Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, PR China.
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17
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Kaiser F, Scharnweber D, Bierbaum S, Wolf-Brandstetter C. Success and side effects of different treatment options in the low current attack of bacterial biofilms on titanium implants. Bioelectrochemistry 2020; 133:107485. [DOI: 10.1016/j.bioelechem.2020.107485] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/13/2020] [Accepted: 02/13/2020] [Indexed: 12/15/2022]
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18
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Murasova P, Kovarova A, Kasparova J, Brozkova I, Hamiot A, Pekarkova J, Dupuy B, Drbohlavova J, Bilkova Z, Korecka L. Direct culture-free electrochemical detection of cells in milk based on quantum dots-modified nanostructured dendrons. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114051] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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19
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Evaluation of the biocompatibility of a PVA/SA scaffold with a human gingival fibroblast (HGF) by using electrochemical impedance spectroscopy. Bioelectrochemistry 2020; 131:107386. [DOI: 10.1016/j.bioelechem.2019.107386] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 09/07/2019] [Accepted: 09/09/2019] [Indexed: 12/16/2022]
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20
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Miller C, Stiglich M, Livingstone M, Gilmore J. Impedance-Based Biosensing of Pseudomonas putida via Solution Blow Spun PLA: MWCNT Composite Nanofibers. MICROMACHINES 2019; 10:mi10120876. [PMID: 31847091 PMCID: PMC6952954 DOI: 10.3390/mi10120876] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/06/2019] [Accepted: 12/10/2019] [Indexed: 11/16/2022]
Abstract
Quantifiable sensing of common microbes in chronic wounds has the potential to enable an objective assessment of wound healing for diagnostic applications. Sensing platforms should be robust, simple, and flexible to provide clinicians with a point-of-care tool. In this work, solution blow spun poly (lactic acid)/multiwalled carbon nanotube nanofiber composites are used to detect the presence and concentration of Pseudomonas putida in vitro using changes in impedance. Impedance microbiology (IM) is a well-documented diagnostic technique used in many applications, including cancer detection, tuberculosis screening and pregnancy tests. Twenty-four hour real-time measurements of the equivalent circuit of three culture media were taken with an inductance, capacitance, and resistance (LCR) meter. Variations in impedance were calculated to correspond to the growth of P. putida. Additionally, instantaneous measurements of bacterial cultures were taken over a one-minute time point to display the fast sensing of bacterial load via IM. This proof-of-concept shows that conductive solution blow spun fiber mats is a valid fabrication technique to develop in situ wound dressing impedance sensors. Study results indicate successful measurement and quantification of bacterial growth in this proof-of-concept study.
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21
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Brosel-Oliu S, Abramova N, Uria N, Bratov A. Impedimetric transducers based on interdigitated electrode arrays for bacterial detection - A review. Anal Chim Acta 2019; 1088:1-19. [PMID: 31623704 DOI: 10.1016/j.aca.2019.09.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 08/29/2019] [Accepted: 09/10/2019] [Indexed: 01/31/2023]
Abstract
Application of the impedance spectroscopy technique to detection of bacteria has advanced considerably over the last decade. This is reflected by the large amount of publications focused on basic research and applications of impedance biosensors. Employment of modern technologies to significantly reduce dimension of impedimetric devices enable on-chip integration of interdigitated electrode arrays for low-cost and easy-to-use sensors. This review is focused on publications dealing with interdigitated electrodes as a transducer unit and different bacteria detection systems using these devices. The first part of the review deals with the impedance technique principles, paying special attention to the use of interdigitated electrodes, while the main part of this work is focused on applications ranging from bacterial growth monitoring to label-free specific bacteria detection.
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Affiliation(s)
- Sergi Brosel-Oliu
- Departament de Micro-Nano Sistemes, BIOMEMS Group, Institut Microelectrònica de Barcelona (IMB-CNM), CSIC, 08290, Bellaterra, Spain
| | - Natalia Abramova
- Departament de Micro-Nano Sistemes, BIOMEMS Group, Institut Microelectrònica de Barcelona (IMB-CNM), CSIC, 08290, Bellaterra, Spain; Lab. Artificial Sensors Syst., ITMO University, Kronverskiy pr.49, 197101, St.Petersburg, Russia
| | - Naroa Uria
- Departament de Micro-Nano Sistemes, BIOMEMS Group, Institut Microelectrònica de Barcelona (IMB-CNM), CSIC, 08290, Bellaterra, Spain
| | - Andrey Bratov
- Departament de Micro-Nano Sistemes, BIOMEMS Group, Institut Microelectrònica de Barcelona (IMB-CNM), CSIC, 08290, Bellaterra, Spain.
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22
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Singh S, Moudgil A, Mishra N, Das S, Mishra P. Vancomycin functionalized WO3 thin film-based impedance sensor for efficient capture and highly selective detection of Gram-positive bacteria. Biosens Bioelectron 2019; 136:23-30. [DOI: 10.1016/j.bios.2019.04.029] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/05/2019] [Accepted: 04/15/2019] [Indexed: 01/08/2023]
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23
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Conteduca D, Brunetti G, Dell'Olio F, Armenise MN, Krauss TF, Ciminelli C. Monitoring of individual bacteria using electro-photonic traps. BIOMEDICAL OPTICS EXPRESS 2019; 10:3463-3471. [PMID: 31467790 PMCID: PMC6706028 DOI: 10.1364/boe.10.003463] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/17/2019] [Accepted: 05/20/2019] [Indexed: 05/07/2023]
Abstract
Antimicrobial resistance (AMR) describes the ability of bacteria to become immune to antimicrobial treatments. Current testing for AMR is based on culturing methods that are very slow because they assess the average response of billions of bacteria. In principle, if tests were available that could assess the response of individual bacteria, they could be much faster. Here, we propose an electro-photonic approach for the analysis and the monitoring of susceptibility at the single-bacterium level. Our method employs optical tweezers based on photonic crystal cavities for the trapping of individual bacteria. While the bacteria are trapped, antibiotics can be added to the medium and the corresponding changes in the optical properties and motility of the bacteria be monitored via changes of the resonance wavelength and transmission. Furthermore, the proposed assay is able to monitor the impedance of the medium surrounding the bacterium, which allows us to record changes in metabolic rate in response to the antibiotic challenge. For example, our simulations predict a variation in measurable electrical current of up to 40% between dead and live bacteria. The proposed platform is the first, to our knowledge, that allows the parallel study of both the optical and the electrical response of individual bacteria to antibiotic challenge. Our platform opens up new lines of enquiry for monitoring the response of bacteria and it could lead the way towards the dissemination of a new generation of antibiogram study, which is relevant for the development of a point-of-care AMR diagnostics.
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Affiliation(s)
- Donato Conteduca
- Optoelectronics Laboratory, Politecnico di Bari, Via Orabona, 4, 70125, Bari, Italy
- Photonics Group, Department of Physics, University of York, Heslington, York, YO10 5DD, UK
| | - Giuseppe Brunetti
- Optoelectronics Laboratory, Politecnico di Bari, Via Orabona, 4, 70125, Bari, Italy
| | - Francesco Dell'Olio
- Optoelectronics Laboratory, Politecnico di Bari, Via Orabona, 4, 70125, Bari, Italy
| | - Mario N Armenise
- Optoelectronics Laboratory, Politecnico di Bari, Via Orabona, 4, 70125, Bari, Italy
| | - Thomas F Krauss
- Photonics Group, Department of Physics, University of York, Heslington, York, YO10 5DD, UK
| | - Caterina Ciminelli
- Optoelectronics Laboratory, Politecnico di Bari, Via Orabona, 4, 70125, Bari, Italy
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24
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Zhang S, Qu Z, Hsueh CC, Chang CT, Chen BY. Deciphering electron-shuttling characteristics of Scutellaria baicalensis Georgi and ingredients for bioelectricity generation in microbial fuel cells. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2018.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Li Q, Zhou D, Pan J, Liu Z, Chen J. Ultrasensitive and simple fluorescence biosensor for detection of the mecA gene of Staphylococcus aureus by using an exonuclease III-assisted cascade signal amplification strategy. Analyst 2019; 143:5670-5675. [PMID: 30402649 DOI: 10.1039/c8an01805g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In this work, a label-free fluorescence biosensor for ultrasensitive and simple detection of the mecA gene of Staphylococcus aureus was proposed by using an exonuclease III (Exo III)-assisted cascade signal amplification strategy. The 3' end-extruding hairpin probe (HP) acted as the target recognition element and the caged G-quadruplex was used as the signal reporter. Without the mecA gene, the HP probe cannot be digested by Exo III, as the G-rich sequences are blocked in the stem of the HP probe. In the presence of the mecA gene, the hybridization of the mecA gene with the 3' end-extruding HP probe triggers the digestion reaction of Exo III, liberating the mecA gene and the mecA gene analogue. Both the released mecA gene and the mecA gene analogue can hybridize with other HP probes and activate another round of the cleavage reaction. Consequently, the released free G-quadruplex is "lit up" by N-methylmesoporphyrin IX (NMM), displaying a dramatically enhanced fluorescence intensity. This sensing platform showed a high sensitivity towards the mecA gene with a detection limit as low as 2.4 fM without any labelling, immobilization, or washing steps. The designed sensing system also exhibits excellent selectivity for the mecA gene in the presence of other interfering DNA sequences. Furthermore, the presented biosensor is robust and has been successfully applied for the detection of the mecA gene in a real food sample with satisfactory results. Owing to its simplicity, cost-effectiveness and ultrasensitivity, our proposed sensing strategy provides a promising platform for the detection of other genes by substituting the target-recognition element.
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Affiliation(s)
- Qiong Li
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.
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26
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Castiello FR, Porter J, Modarres P, Tabrizian M. Interfacial capacitance immunosensing using interdigitated electrodes: the effect of insulation/immobilization chemistry. Phys Chem Chem Phys 2019; 21:15787-15797. [DOI: 10.1039/c9cp02129a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
With the aim of improving the reproducibility of capacitive immunosensors, we performed a comparative study of four different insulating/immobilization chemistries.
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Affiliation(s)
| | - James Porter
- Biomedical Engineering Department
- McGill University
- Montreal
- Canada
| | - Paresa Modarres
- Biomedical Engineering Department
- McGill University
- Montreal
- Canada
| | - Maryam Tabrizian
- Biomedical Engineering Department
- McGill University
- Montreal
- Canada
- Faculty of Dentistry
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27
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Affiliation(s)
- Ariel L. Furst
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Matthew B. Francis
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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28
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Sylvain M, Lehoux F, Morency S, Faucher F, Bharucha E, Tremblay DM, Raymond F, Sarrazin D, Moineau S, Allard M, Corbeil J, Messaddeq Y, Gosselin B. The EcoChip: A Wireless Multi-Sensor Platform for Comprehensive Environmental Monitoring. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2018; 12:1289-1300. [PMID: 30387742 DOI: 10.1109/tbcas.2018.2878404] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This paper presents the EcoChip, a new system based on the state-of-the-art electro-chemical impedance (EIS) technologies allowing the growth of single strain organisms isolated from northern habitats. This portable system is a complete and autonomous wireless platform designed to monitor and cultivate microorganisms directly sampled from their natural environment, particularly from harsh northern environments. Using 96-well plates, the EcoChip can be used in the field for real-time monitoring of bacterial growth. Manufactured with high-quality electronic components, this new EIS monitoring system is designed to function at a low excitation voltage signal to avoid damaging the cultured cells. The high-precision calibration network leads to high-precision results, even in the most limiting contexts. Luminosity, humidity, and temperature can also be monitored with the addition of appropriate sensors. Access to robust data storage systems and power supplies is an obvious limitation for northern research. That is why the EcoChip is equipped with a flash memory that can store data over long periods of time. To resolve the power issue, a low-power micro-controller and a power management unit control and supply all electronic building blocks. Data stored in the EcoChip's flash memory can be transmitted through a transceiver whenever a receiver is located within the functional transmission range. In this paper, we present the measured performance of the system, along with results from laboratory tests in vitro and from two field tests. The EcoChip has been utilized to collect bio-environemental data in the field from the northern soils and ecosystems of Kuujjuarapik and Puvirnituq, during two expeditions, in 2017 and 2018, respectively. We show that the EcoChip can effectively carry out EIS analyses over an excitation frequency ranging from 750 Hz to 10 kHz with an accuracy of 2.35%. The overall power consumption of the system was 140.4 mW in normal operating mode and 81 μW in sleep mode. The proper development of the isolated bacteria was confirmed through deoxyribonucleic acid sequencing, indicating that bacteria thrive in the EcoChip's culture wells while the growing conditions are successfully gathered and stored.
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29
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Impedance Sensing Platform for Detection of the Food Pathogen Listeria monocytogenes. ELECTRONICS 2018. [DOI: 10.3390/electronics7120347] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A great improvement in food safety and quality controls worldwide has been achieved through the development of biosensing platforms. Foodborne pathogens continue to cause serious outbreaks, due to the ingestion of contaminated food. The development of new, sensitive, portable, high-throughput, and automated platforms is a primary objective to allow detection of pathogens and their toxins in foods. Listeria monocytogenes is one common foodborne pathogen. Major outbreaks of listeriosis have been caused by a variety of foods, including milk, soft cheeses, meat, fermented sausages, poultry, seafood and vegetable products. Due to its high sensitivity and easy setup, electrochemical impedance spectroscopy (EIS) has been extensively applied for biosensor fabrication and in particular in the field of microbiology as a mean to detect and quantify foodborne bacteria. Here we describe a miniaturized, portable EIS platform consisting of a microfluidic device with EIS sensors for the detection of L. monocytogenes in milk samples, connected to a portable impedance analyzer for on-field application in clinical and food diagnostics, but also for biosecurity purposes. To achieve this goal microelectrodes were functionalized with antibodies specific for L. monocytogenes. The binding and detection of L. monocytogenes was achieved in the range 2.2 × 103 cfu/mL to 1 × 102 with a Limit of Detection (LoD) of 5.5 cfu/mL.
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30
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Ward A, Hannah A, Kendrick S, Tucker N, MacGregor G, Connolly P. Identification and characterisation of Staphylococcus aureus on low cost screen printed carbon electrodes using impedance spectroscopy. Biosens Bioelectron 2018; 110:65-70. [DOI: 10.1016/j.bios.2018.03.048] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/08/2018] [Accepted: 03/21/2018] [Indexed: 12/19/2022]
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31
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An interdigitated electrode biosensor platform for rapid HLA-B*15:02 genotyping for prevention of drug hypersensitivity. Biosens Bioelectron 2018; 111:174-183. [DOI: 10.1016/j.bios.2018.01.063] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 01/28/2018] [Accepted: 01/30/2018] [Indexed: 11/30/2022]
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32
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Seo Y, Jeong S, Lee J, Choi HS, Kim J, Lee H. Innovations in biomedical nanoengineering: nanowell array biosensor. NANO CONVERGENCE 2018; 5:9. [PMID: 29670832 PMCID: PMC5897454 DOI: 10.1186/s40580-018-0141-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 03/26/2018] [Indexed: 05/04/2023]
Abstract
Nanostructured biosensors have pioneered biomedical engineering by providing highly sensitive analyses of biomolecules. The nanowell array (NWA)-based biosensing platform is particularly innovative, where the small size of NWs within the array permits extremely profound sensing of a small quantity of biomolecules. Undoubtedly, the NWA geometry of a gently-sloped vertical wall is critical for selective docking of specific proteins without capillary resistances, and nanoprocessing has contributed to the fabrication of NWA electrodes on gold substrate such as molding process, e-beam lithography, and krypton-fluoride (KrF) stepper semiconductor method. The Lee group at the Mara Nanotech has established this NW-based biosensing technology during the past two decades by engineering highly sensitive electrochemical sensors and providing a broad range of detection methods from large molecules (e.g., cells or proteins) to small molecules (e.g., DNA and RNA). Nanosized gold dots in the NWA enhance the detection of electrochemical biosensing to the range of zeptomoles in precision against the complementary target DNA molecules. In this review, we discuss recent innovations in biomedical nanoengineering with a specific focus on novel NWA-based biosensors. We also describe our continuous efforts in achieving a label-free detection without non-specific binding while maintaining the activity and stability of immobilized biomolecules. This research can lay the foundation of a new platform for biomedical nanoengineering systems.
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Affiliation(s)
- YoungTae Seo
- Department of Computer Science, Queens College of the City University of New York, Flushing, NY 11367 USA
- Mara Nanotech New York, Inc., New York, NY 10031 USA
| | - Sunil Jeong
- Department of Biology, Queens College of the City University of New York, Flushing, NY 11367 USA
- Mara Nanotech New York, Inc., New York, NY 10031 USA
| | - JuKyung Lee
- National Center for Efficacy Evaluation of Respiratory Disease Product, Korea Institute of Toxicology, Jeongeup, Republic of Korea
| | - Hak Soo Choi
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02219 USA
| | - Jonghan Kim
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115 USA
| | - HeaYeon Lee
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115 USA
- Mara Nanotech New York, Inc., New York, NY 10031 USA
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Mapping bacteria on filter membranes, an innovative SERS approach. J Microbiol Methods 2018; 147:69-75. [DOI: 10.1016/j.mimet.2018.03.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 03/12/2018] [Accepted: 03/14/2018] [Indexed: 11/22/2022]
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Tubía I, Paredes J, Pérez-Lorenzo E, Arana S. Antibody biosensors for spoilage yeast detection based on impedance spectroscopy. Biosens Bioelectron 2017; 102:432-438. [PMID: 29179121 DOI: 10.1016/j.bios.2017.11.057] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 11/17/2017] [Accepted: 11/21/2017] [Indexed: 11/18/2022]
Abstract
Brettanomyces is a yeast species responsible for wine and cider spoilage, producing volatile phenols that result in off-odors and loss of fruity sensorial qualities. Current commercial detection methods for these spoilage species are liable to frequent false positives, long culture times and fungal contamination. In this work, an interdigitated (IDE) biosensor was created to detect Brettanomyces using immunological reactions and impedance spectroscopy analysis. To promote efficient antibody immobilization on the electrodes' surface and to decrease non-specific adsorption, a Self-Assembled Monolayer (SAM) was developed. An impedance spectroscopy analysis, over four yeast strains, confirmed our device's increased efficacy. Compared to label-free sensors, antibody biosensors showed a higher relative impedance. The results also suggested that these biosensors could be a promising method to monitor some spoilage yeasts, offering an efficient alternative to the laborious and expensive traditional methods.
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Affiliation(s)
- I Tubía
- Ceit, Manuel Lardizabal 15, 20018 Donostia/San Sebastián, Spain; Universidad de Navarra, Tecnun, Manuel Lardizabal 13, 20018 Donostia/San Sebastián, Spain.
| | - J Paredes
- Universidad de Navarra, Tecnun, Manuel Lardizabal 13, 20018 Donostia/San Sebastián, Spain
| | - E Pérez-Lorenzo
- Ceit, Manuel Lardizabal 15, 20018 Donostia/San Sebastián, Spain; Universidad de Navarra, Tecnun, Manuel Lardizabal 13, 20018 Donostia/San Sebastián, Spain
| | - S Arana
- Ceit, Manuel Lardizabal 15, 20018 Donostia/San Sebastián, Spain; Universidad de Navarra, Tecnun, Manuel Lardizabal 13, 20018 Donostia/San Sebastián, Spain
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Koklu A, Mansoorifar A, Beskok A. Self-Similar Interfacial Impedance of Electrodes in High Conductivity Media. Anal Chem 2017; 89:12533-12540. [DOI: 10.1021/acs.analchem.7b03753] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Anil Koklu
- Department
of Mechanical Engineering, Southern Methodist University, Dallas, Texas 75205, United States
| | - Amin Mansoorifar
- Department
of Mechanical Engineering, Southern Methodist University, Dallas, Texas 75205, United States
| | - Ali Beskok
- Department
of Mechanical Engineering, Southern Methodist University, Dallas, Texas 75205, United States
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36
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Subramanian S, Tolstaya EI, Winkler TE, Bentley WE, Ghodssi R. An Integrated Microsystem for Real-Time Detection and Threshold-Activated Treatment of Bacterial Biofilms. ACS APPLIED MATERIALS & INTERFACES 2017; 9:31362-31371. [PMID: 28816432 DOI: 10.1021/acsami.7b04828] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Bacterial biofilms are the primary cause of infections in medical implants and catheters. Delayed detection of biofilm infections contributes to the widespread use of high doses of antibiotics, leading to the emergence of antibiotic-resistant bacterial strains. Accordingly, there is an urgent need for systems that can rapidly detect and treat biofilm infections in situ. As a step toward this goal, in this work we have developed for the first time a threshold-activated feedback-based impedance sensor-treatment system for combined real-time detection and treatment of biofilms. Specifically, we demonstrate the use of impedimetric sensing to accurately monitor the growth of Escherichia coli biofilms in microfluidic flow cells by measuring the fractional relative change (FRC) in absolute impedance. Furthermore, we demonstrate the use of growth measurements as a threshold-activated trigger mechanism to initiate successful treatment of biofilms using bioelectric effect (BE), applied through the same sensing electrode array. This was made possible through a custom program that (a) monitored the growth and removal of biofilms within the microfluidic channels in real-time and (b) enabled the threshold-based activation of BE treatment. Such BE treatment resulted in a ∼74.8 % reduction in average biofilm surface coverage as compared to the untreated negative control. We believe that this smart microsystem for integrated biofilm sensing and treatment will enable future development of autonomous biosensors optimized for accurate real-time detection of the onset of biofilms and their in situ treatment, directly on the surfaces of medical implants.
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Affiliation(s)
- Sowmya Subramanian
- MEMS Sensors and Actuators Laboratory, Institute for Systems Research, ‡Department of Electrical and Computer Engineering, and §The Fischell Department of Bioengineering, University of Maryland , College Park, Maryland 20742, United States
| | - Ekaterina I Tolstaya
- MEMS Sensors and Actuators Laboratory, Institute for Systems Research, ‡Department of Electrical and Computer Engineering, and §The Fischell Department of Bioengineering, University of Maryland , College Park, Maryland 20742, United States
| | - Thomas E Winkler
- MEMS Sensors and Actuators Laboratory, Institute for Systems Research, ‡Department of Electrical and Computer Engineering, and §The Fischell Department of Bioengineering, University of Maryland , College Park, Maryland 20742, United States
| | - William E Bentley
- MEMS Sensors and Actuators Laboratory, Institute for Systems Research, ‡Department of Electrical and Computer Engineering, and §The Fischell Department of Bioengineering, University of Maryland , College Park, Maryland 20742, United States
| | - Reza Ghodssi
- MEMS Sensors and Actuators Laboratory, Institute for Systems Research, ‡Department of Electrical and Computer Engineering, and §The Fischell Department of Bioengineering, University of Maryland , College Park, Maryland 20742, United States
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Lei KF, Liu TK, Tsang NM. Towards a high throughput impedimetric screening of chemosensitivity of cancer cells suspended in hydrogel and cultured in a paper substrate. Biosens Bioelectron 2017; 100:355-360. [PMID: 28946107 DOI: 10.1016/j.bios.2017.09.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 09/15/2017] [Accepted: 09/17/2017] [Indexed: 11/17/2022]
Abstract
In order to achieve high predictive value of cell chemosensitivity test for clinical efficacy, cancer cells were suggested to be encapsulated and cultured in hydrogel to mimic the natural microenvironment of tumors. However, handling 3D cells/hydrogel culture construct is tedious and cellular response is difficult to be quantitatively analyzed. In the current study, a novel platform for conducting 3D cell culture and analyzing cell viability has been developed towards a high throughput drug screening. Cells encapsulated in the hydrogel were cultured in the microwells of a paper substrate. The substrate was then immersed in the culture medium containing drug for 2 days. At 24 and 48h during the culture course, the paper substrate was placed on the measurement electrodes for conducting the impedance measurement in order to quantify the cell viability in the hydrogel. Cell viability of two human hepatoma cell lines (Huh7 and Hep-G2) was quantitatively investigated under the treatment of two drugs (doxorubicin and etoposide). The results represented by IC50 values revealed that Huh7 cells had a higher drug resistance than Hep-G2 cells and doxorubicin had a higher efficacy than etoposide for treating hepatocellular carcinoma. The current work has demonstrated a high throughput, convenient, and quantitative platform for the investigation of chemosensitivity of cells cultured in the 3D environment.
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Affiliation(s)
- Kin Fong Lei
- Graduate Institute of Medical Mechatronics, Chang Gung University, Taoyuan, Taiwan; Department of Mechanical Engineering, Chang Gung University, Taoyuan, Taiwan; Department of Radiation Oncology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.
| | - Tai-Kun Liu
- Graduate Institute of Medical Mechatronics, Chang Gung University, Taoyuan, Taiwan
| | - Ngan-Ming Tsang
- Department of Radiation Oncology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan; Department of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan
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38
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Lee J, Shin S, Desalvo A, Lee G, Lee JY, Polini A, Chae S, Jeong H, Kim J, Choi H, Lee H. Nonmediated, Label-Free Based Detection of Cardiovascular Biomarker in a Biological Sample. Adv Healthc Mater 2017. [PMID: 28636127 DOI: 10.1002/adhm.201700231] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Direct electrochemical (EC) monitoring in a cell culture medium without electron transporter as called mediator is attractive topic in vitro organoid based on chip with frequently and long-time monitoring since it can avoid to its disadvantage as stability, toxicity. Here, direct monitoring with nonmediator is demonstrated based on impedance spectroscopy under the culture medium in order to overcome the limitation of mediator. The applicability of EC monitoring is shown by detecting alpha-1-anti trypsin (A1AT) which is known as biomarkers for cardiac damage and is widely chosen in organoid cardiac cell-based chip. The validity of presented EC monitoring is proved by observing signal processing and transduction in medium, mediator, medium-mediator complex. After the observation of electron behavior, A1AT as target analyte is immobilized on the electrode and detected using antibody-antigen interaction. As a result, the result indicates limit of detection is 10 ng mL-1 and linearity for the 10-1000 ng mL-1 range, with a sensitivity of 3980 nF (log [g mL])-1 retaining specificity. This EC monitoring is based on label-free and reagentless detection, will pave the way to use for continuous and simple monitoring of in vitro organoid platform.
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Affiliation(s)
- JuKyung Lee
- Department of Mechanical and Industrial Engineering, College of Engineering, Northeastern University, Boston, MA, 02115, USA
- National Center for Efficacy Evaluation of Respiratory Disease Product, Korea Institute of Toxicology, Jeongeup, 56212, Republic of Korea
| | - SuRyon Shin
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Anna Desalvo
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Geonhui Lee
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, Republic of Korea
| | - Jeong Yoon Lee
- Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, 02114, USA
| | - Alessandro Polini
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Sukyoung Chae
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Hobin Jeong
- Department of Mechanical and Industrial Engineering, College of Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Jonghan Kim
- Department of Pharmaceutical Sciences, School of Pharmacy, Bouve College of Health Science, Northeastern University, Boston, MA, 02115, USA
| | - Haksoo Choi
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - HeaYeon Lee
- Department of Pharmaceutical Sciences, School of Pharmacy, Bouve College of Health Science, Northeastern University, Boston, MA, 02115, USA
- Department of Nano-Integrated Cogno-Mechatronics Engineering, Pusan National University, Busan, 46241, South Korea
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39
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Wen T, Wang R, Sotero A, Li Y. A Portable Impedance Immunosensing System for Rapid Detection of Salmonella Typhimurium. SENSORS 2017; 17:s17091973. [PMID: 28846643 PMCID: PMC5621372 DOI: 10.3390/s17091973] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 08/13/2017] [Accepted: 08/22/2017] [Indexed: 11/16/2022]
Abstract
SalmonellaTyphimurium is one of the most dangerous foodborne pathogens and poses a significant threat to human health. The objective of this study was to develop a portable impedance immunosensing system for rapid and sensitive detection of S. Typhimurium in poultry. The developed portable impedance immunosensing system consisted of a gold interdigitated array microelectrode (IDAM), a signal acquisitive interface and a laptop computer with LabVIEW software. The IDAM was first functionalized with 16-Mercaptohexadecanoic acid, and streptavidin was immobilized onto the electrode surface through covalent bonding. Then, biotin-labelled S. Typhimurium-antibody was immobilized onto the IDAM surface. Samples were dropped on the surface of the IDAM and the S. Typhimurium cells in the samples were captured by the antibody on the IDAM. This resulted in impedance changes that were measured and displayed with the LabVIEW software. An equivalent circuit of the immunosensor demonstrated that the largest change in impedance was due to the electron-transfer resistance. The equivalent circuit showed an increase of 35% for the electron-transfer resistance value compared to the negative control. The calibration result indicated that the portable impedance immunosensing system could be used to measure the standard impedance elements, and it had a maximum error of measurement of approximately 13%. For pure culture detection, the system had a linear relationship between the impedance change and the logarithmic value of S. Typhimurium cells ranging from 76 to 7.6 × 106 CFU (colony-forming unit) (50 μL)−1. The immunosensor also had a correlation coefficient of 0.98, and a high specificity for detection of S. Typhimurium cells with a limit of detection (LOD) of 102 CFU (50 μL)−1. The detection time from the moment a sample was introduced to the display of the results was 1 h. To conclude, the portable impedance immunosensing system for detection of S. Typhimurium achieved an LOD that is comparable with commercial electrochemical impedance instruments. The developed impedance immunosensor has advantages in portability, low cost, rapid detection and label-free features showing a great potential for in-field detection of foodborne pathogens.
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Affiliation(s)
- Tao Wen
- School of Mechanical and Electrical Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
| | - Ronghui Wang
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
| | - America Sotero
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
| | - Yanbin Li
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
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40
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Alahi MEE, Mukhopadhyay SC. Detection Methodologies for Pathogen and Toxins: A Review. SENSORS (BASEL, SWITZERLAND) 2017; 17:E1885. [PMID: 28813028 PMCID: PMC5580025 DOI: 10.3390/s17081885] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 08/02/2017] [Accepted: 08/14/2017] [Indexed: 01/10/2023]
Abstract
Pathogen and toxin-contaminated foods and beverages are a major source of illnesses, even death, and have a significant economic impact worldwide. Human health is always under a potential threat, including from biological warfare, due to these dangerous pathogens. The agricultural and food production chain consists of many steps such as harvesting, handling, processing, packaging, storage, distribution, preparation, and consumption. Each step is susceptible to threats of environmental contamination or failure to safeguard the processes. The production process can be controlled in the food and agricultural sector, where smart sensors can play a major role, ensuring greater food quality and safety by low cost, fast, reliable, and profitable methods of detection. Techniques for the detection of pathogens and toxins may vary in cost, size, and specificity, speed of response, sensitivity, and precision. Smart sensors can detect, analyse and quantify at molecular levels contents of different biological origin and ensure quality of foods against spiking with pesticides, fertilizers, dioxin, modified organisms, anti-nutrients, allergens, drugs and so on. This paper reviews different methodologies to detect pathogens and toxins in foods and beverages.
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Affiliation(s)
- Md Eshrat E Alahi
- Department of Engineering, Macquarie University, Sydney, NSW 2109, Australia.
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41
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Low-Frequency Electrochemical Impedance Spectroscopy as a Monitoring Tool for Yeast Growth in Industrial Brewing Processes. CHEMOSENSORS 2017. [DOI: 10.3390/chemosensors5030024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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42
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Umesha S, Manukumar HM. Advanced molecular diagnostic techniques for detection of food-borne pathogens: Current applications and future challenges. Crit Rev Food Sci Nutr 2017; 58:84-104. [PMID: 26745757 DOI: 10.1080/10408398.2015.1126701] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The elimination of disease-causing microbes from the food supply is a primary goal and this review deals with the overall techniques available for detection of food-borne pathogens. Now-a-days conventional methods are replaced by advanced methods like Biosensors, Nucleic Acid-based Tests (NAT), and different PCR-based techniques used in molecular biology to identify specific pathogens. Bacillus cereus, Staphylococcus aureus, Proteus vulgaris, Escherichia coli, Campylobacter, Listeria monocytogenes, Salmonella spp., Aspergillus spp., Fusarium spp., Penicillium spp., and pathogens are detected in contaminated food items that cause always diseases in human in any one or the other way. Identification of food-borne pathogens in a short period of time is still a challenge to the scientific field in general and food technology in particular. The low level of food contamination by major pathogens requires specific sensitive detection platforms and the present area of hot research looking forward to new nanomolecular techniques for nanomaterials, make them suitable for the development of assays with high sensitivity, response time, and portability. With the sound of these, we attempt to highlight a comprehensive overview about food-borne pathogen detection by rapid, sensitive, accurate, and cost affordable in situ analytical methods from conventional methods to recent molecular approaches for advanced food and microbiology research.
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Affiliation(s)
- S Umesha
- a Department of Studies in Biotechnology , University of Mysore, Manasagangotri , Mysore , Karnataka , India
| | - H M Manukumar
- a Department of Studies in Biotechnology , University of Mysore, Manasagangotri , Mysore , Karnataka , India
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43
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Abeyrathne CD, Huynh DH, Mcintire TW, Nguyen TC, Nasr B, Zantomio D, Chana G, Abbott I, Choong P, Catton M, Skafidas E. Lab on a chip sensor for rapid detection and antibiotic resistance determination of Staphylococcus aureus. Analyst 2017; 141:1922-9. [PMID: 26811849 DOI: 10.1039/c5an02301g] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Gram-positive bacterium, Staphylococcus aureus (S. aureus), is a major pathogen responsible for a variety of infectious diseases ranging from cellulitis to more serious conditions such as septic arthritis and septicaemia. Timely treatment with appropriate antibiotic therapy is essential to ensure clinical defervescence and to prevent further complications such as infective endocarditis or organ impairment due to septic shock. To date, initial antibiotic choice is empirical, using a "best guess" of likely organism and sensitivity- an approach adopted due to the lack of rapid identification methods for bacteria. Current culture based methods take up to 5 days to identify the causative bacterial pathogen and its antibiotic sensitivity. This paper provides proof of concept for a biosensor, based on interdigitated electrodes, to detect the presence of S. aureus and ascertain its sensitivity to flucloxacillin rapidly (within 2 hours) in a cost effective manner. The proposed method is label-free and uses non-faradic measurements. This is the first study to successfully employ interdigitated electrodes for the rapid detection of antibiotic resistance. The method described has important potential outcomes of faster definitive antibiotic treatment and more rapid clinical response to treatment.
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Affiliation(s)
- Chathurika D Abeyrathne
- Centre for Neural Engineering, The University of Melbourne, Carlton, VIC 3053, Australia. and Department of Electrical and Electronic Engineering, Melbourne School of Engineering, The University of Melbourne, Victoria 3010, Australia
| | - Duc H Huynh
- Centre for Neural Engineering, The University of Melbourne, Carlton, VIC 3053, Australia. and Department of Electrical and Electronic Engineering, Melbourne School of Engineering, The University of Melbourne, Victoria 3010, Australia
| | - Thomas W Mcintire
- Melbourne Medical School, The University of Melbourne, Victoria 3010, Australia
| | - Thanh C Nguyen
- Centre for Neural Engineering, The University of Melbourne, Carlton, VIC 3053, Australia. and Department of Electrical and Electronic Engineering, Melbourne School of Engineering, The University of Melbourne, Victoria 3010, Australia
| | - Babak Nasr
- Centre for Neural Engineering, The University of Melbourne, Carlton, VIC 3053, Australia. and Department of Electrical and Electronic Engineering, Melbourne School of Engineering, The University of Melbourne, Victoria 3010, Australia
| | - Daniela Zantomio
- Department of Haematology, Austin Health, Victoria 3084, Australia
| | - Gursharan Chana
- Centre for Neural Engineering, The University of Melbourne, Carlton, VIC 3053, Australia. and Department of Psychiatry, Royal Melbourne Hospital, The University of Melbourne, Victoria 3050, Australia
| | - Iain Abbott
- Victorian Infectious Diseases Reference Laboratory, Doherty Institute, Victoria 3000, Australia
| | - Peter Choong
- Department of Surgery at St. Vincent's Hospital, University of Melbourne, Victoria 3000, Australia
| | - Mike Catton
- Victorian Infectious Diseases Reference Laboratory, Doherty Institute, Victoria 3000, Australia
| | - Efstratios Skafidas
- Centre for Neural Engineering, The University of Melbourne, Carlton, VIC 3053, Australia. and Department of Electrical and Electronic Engineering, Melbourne School of Engineering, The University of Melbourne, Victoria 3010, Australia and Department of Psychiatry, Royal Melbourne Hospital, The University of Melbourne, Victoria 3050, Australia
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44
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Li H, Liu X, Li L, Mu X, Genov R, Mason AJ. CMOS Electrochemical Instrumentation for Biosensor Microsystems: A Review. SENSORS 2016; 17:s17010074. [PMID: 28042860 PMCID: PMC5298647 DOI: 10.3390/s17010074] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 12/15/2016] [Accepted: 12/20/2016] [Indexed: 11/16/2022]
Abstract
Modern biosensors play a critical role in healthcare and have a quickly growing commercial market. Compared to traditional optical-based sensing, electrochemical biosensors are attractive due to superior performance in response time, cost, complexity and potential for miniaturization. To address the shortcomings of traditional benchtop electrochemical instruments, in recent years, many complementary metal oxide semiconductor (CMOS) instrumentation circuits have been reported for electrochemical biosensors. This paper provides a review and analysis of CMOS electrochemical instrumentation circuits. First, important concepts in electrochemical sensing are presented from an instrumentation point of view. Then, electrochemical instrumentation circuits are organized into functional classes, and reported CMOS circuits are reviewed and analyzed to illuminate design options and performance tradeoffs. Finally, recent trends and challenges toward on-CMOS sensor integration that could enable highly miniaturized electrochemical biosensor microsystems are discussed. The information in the paper can guide next generation electrochemical sensor design.
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Affiliation(s)
- Haitao Li
- Maxim Integrated Products Inc., 160 Rio Robles, San Jose, CA 95134, USA.
| | - Xiaowen Liu
- Xcellcure LLC., 1 City Place Drive Suite 285, St. Louis, MO 63131, USA.
| | - Lin Li
- Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA.
| | - Xiaoyi Mu
- Apple Inc., 1 Infinite Loop, Cupertino, CA 95014, USA.
| | - Roman Genov
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON M5S, Canada.
| | - Andrew J Mason
- Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA.
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45
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Xavier P, Rauly D, Chamberod E, Martins JMF. Theoretical evidence of maximum intracellular currents versus frequency in an Escherichia coli cell submitted to AC voltage. Bioelectromagnetics 2016; 38:213-219. [PMID: 28012193 DOI: 10.1002/bem.22033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 12/10/2016] [Indexed: 11/10/2022]
Abstract
In this work, the problem of intracellular currents in longilinear bacteria, such as Escherichia coli, suspended in a physiological medium and submitted to a harmonic voltage (AC), is analyzed using the Finite-Element-based software COMSOL Multiphysics. Bacterium was modeled as a cylindrical capsule, ended by semi-spheres and surrounded by a dielectric cell wall. An equivalent single-layer cell wall was defined, starting from the well-recognized three-shell modeling approach. The bacterium was considered immersed in a physiological medium, which was also taken into account in the modeling. A new complex transconductance was thus introduced, relating the complex ratio between current inside the bacterium and voltage applied between two parallel equipotential planes, separated by a realistic distance. When voltage was applied longitudinally relative to the bacterium main axis, numerical results in terms of frequency response in the 1-20 MHz range for E. coli cells revealed that transconductance magnitude exhibited a maximum at a frequency depending on the cell wall capacitance. This occurred in spite of the purely passive character of the model and could be explained by an equivalent electrical network giving very similar results and showing special conditions for lateral paths of the currents through the cell wall. It is shown that the main contribution to this behavior is due to the conductive part of the current. Bioelectromagnetics. 38:213-219, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Pascal Xavier
- Institut de Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et de Caractérisation (IMEP-LAHC), UMR 5130, CNRS/G-INP/UGA, MINATEC, Grenoble, France.,University Grenoble Alps (UGA), Grenoble, France
| | - Dominique Rauly
- Institut de Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et de Caractérisation (IMEP-LAHC), UMR 5130, CNRS/G-INP/UGA, MINATEC, Grenoble, France.,University Grenoble Alps (UGA), Grenoble, France
| | | | - Jean M F Martins
- University Grenoble Alps (UGA), Grenoble, France.,Laboratoire d'étude des Transferts en Hydrologie et Environnement (LTHE), UMR 5564, CNRS/G-INP/IRD/UGA, Grenoble, France
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46
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A Novel Application for Low Frequency Electrochemical Impedance Spectroscopy as an Online Process Monitoring Tool for Viable Cell Concentrations. SENSORS 2016; 16:s16111900. [PMID: 27845720 PMCID: PMC5134559 DOI: 10.3390/s16111900] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 10/29/2016] [Accepted: 11/09/2016] [Indexed: 11/29/2022]
Abstract
New approaches in process monitoring during industrial fermentations are not only limited to classical pH, dO2 and offgas analysis, but use different in situ and online sensors based on different physical principles to determine biomass, product quality, lysis and far more. One of the very important approaches is the in situ accessibility of viable cell concentration (VCC). This knowledge provides increased efficiency in monitoring and controlling strategies during cultivations. Electrochemical impedance spectroscopy—EIS—is used to monitor biomass in a fermentation of E. coli BL21(DE3), producing a recombinant protein using a fed batch-based approach. Increases in the double layer capacitance (Cdl), determined at frequencies below 1 kHz, are proportional to the increase of biomass in the batch and fed batch phase, monitored in offline and online modes for different cultivations. A good correlation of Cdl with cell density is found and in order to get an appropriate verification of this method, different state-of-the-art biomass measurements are performed and compared. Since measurements in this frequency range are largely determined by the double layer region between the electrode and media, rather minor interferences with process parameters (aeration, stirring) are to be expected. It is shown that impedance spectroscopy at low frequencies is a powerful tool for cultivation monitoring.
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47
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Wiederoder MS, Misri I, DeVoe DL. Impedimetric Immunosensing in a Porous Volumetric Microfluidic Detector. SENSORS AND ACTUATORS. B, CHEMICAL 2016; 234:493-497. [PMID: 27721569 PMCID: PMC5053616 DOI: 10.1016/j.snb.2016.05.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A sensitive and rapid impedemetric immunosensor is demonstrated utilizing porous volumetric microfluidic detection elements and silver enhanced gold nanoparticle probes. The porous detection elements significantly increase capture probe density and decrease diffusion length scales compared to conventional planar sensors to improve target capture efficiency and enhance impedance signal. In this work, a packed bed of silica beads functionalized with antibody probes serves as a porous sensor element within a thermoplastic microchannel, with an interdigitated gold electrode microarray used to measure impedance changes caused by the concentration dependent formation of silver aggregates. The measured impedance change is independent of electrode spacing, enabling a device with low resolution electrodes to achieve a sandwich immunoassay detection limit between 1-10 ng/mL with a 4-log dynamic range, with a total assay time of 75 min.
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Affiliation(s)
- Michael S Wiederoder
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| | - Isaac Misri
- Department of Mechanical Engineering, University of Maryland, College Park, Maryland, USA
| | - Don L DeVoe
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA; Department of Mechanical Engineering, University of Maryland, College Park, Maryland, USA
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Xu S, Wang P, Dong Y. Measuring Electrolyte Impedance and Noise Simultaneously by Triangular Waveform Voltage and Principal Component Analysis. SENSORS 2016; 16:s16040576. [PMID: 27110787 PMCID: PMC4851090 DOI: 10.3390/s16040576] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 04/17/2016] [Accepted: 04/19/2016] [Indexed: 11/17/2022]
Abstract
In order to measure the impedance variation process in electrolyte solutions, a method of triangular waveform voltage excitation is investigated together with principal component analysis (PCA). Using triangular waveform voltage as the excitation signal, the response current during one duty cycle is sampled to construct a measurement vector. The measurement matrix is then constructed by the measurement vectors obtained from different measurements. After being processed by PCA, the changing information of solution impedance is contained in the loading vectors while the response current and noise information is contained in the score vectors. The measurement results of impedance variation by the proposed signal processing method are independent of the equivalent impedance model. The noise-induced problems encountered during equivalent impedance calculation are therefore avoided, and the real-time variation information of noise in the electrode-electrolyte interface can be extracted at the same time. Planar-interdigitated electrodes are experimentally tested for monitoring the KCl concentration variation process. Experimental results indicate that the measured impedance variation curve reflects the changing process of solution conductivity, and the amplitude distribution of the noise during one duty cycle can be utilized to analyze the contact conditions of the electrode and electrolyte interface.
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Affiliation(s)
- Shanzhi Xu
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China.
| | - Peng Wang
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China.
| | - Yonggui Dong
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China.
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Protein Chips for Detection of Salmonella spp. from Enrichment Culture. SENSORS 2016; 16:s16040574. [PMID: 27110786 PMCID: PMC4851088 DOI: 10.3390/s16040574] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 04/18/2016] [Accepted: 04/19/2016] [Indexed: 12/18/2022]
Abstract
Food pathogens are the cause of foodborne epidemics, therefore there is a need to detect the pathogens in food productions rapidly. A pre-enrichment culture followed by selective agar plating are standard detection methods. Molecular methods such as qPCR have provided a first rapid protocol for detection of pathogens within 24 h of enrichment culture. Biosensors also may provide a rapid tool to individuate a source of Salmonella contamination at early times of pre-enrichment culture. Forty mL of Salmonella spp. enrichment culture were processed by immunoseparation using the Pathatrix, as in AFNOR validated qPCR protocols. The Salmonella biosensor combined with immunoseparation showed a limit of detection of 100 bacteria/40 mL, with a 400 fold increase to previous results. qPCR analysis requires processing of bead-bound bacteria with lysis buffer and DNA clean up, with a limit of detection of 2 cfu/50 μL. Finally, a protein chip was developed and tested in screening and identification of 5 common pathogen species, Salmonella spp., E. coli, S. aureus, Campylobacter spp. and Listeria spp. The protein chip, with high specificity in species identification, is proposed to be integrated into a Lab-on-Chip system, for rapid and reproducible screening of Salmonella spp. and other pathogen species contaminating food productions.
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GOUD KYUGENDER, M SATYANARAYANA, REDDY KKOTESHWARA, GOBI KVENGATAJALABATHY. Development of highly selective electrochemical impedance sensor for detection of sub-micromolar concentrations of 5-Chloro-2,4-dinitrotoluene. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1078-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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