Impedance sensor for rapid enumeration of E. coli in milk samples

Liu, Jen Tsai; Settu, Kalpana; Tsai, Jang-Zern; Chen, Ching Jung

doi:10.1016/j.electacta.2015.09.029

Cited by 30 publications

(12 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This wide range of fields includes typically electrochemistry related fields as fuel cells [5][6][7][8][9][10][11][12], batteries [13][14][15][16][17], coatings [18][19][20], electrochemical sensors [21][22][23][24][25][26] and supercapacitors [27][28][29][30][31]. But it also includes fields not traditionally linked to electrochemistry as enzymatic kinetics [32], biochemistry [33][34][35], food quality control [36], cancer detection [37][38] and immunology [39][40], amongst others. This electrochemical technique was first introduced in wet-electrochemistry in the late sixties of last century; and then, during the seventies, it was adopted by the solid state researchers [41].…”

Section: Introductionmentioning

confidence: 99%

Application of a Montecarlo based quantitative Kramers-Kronig test for linearity assessment of EIS measurements

Giner-Sanz

Ortega

Pérez-Herranz

2016

Electrochimica Acta

View full text Add to dashboard Cite

Electrochemical Impedance Spectroscopy (EIS) is a very powerful tool to study the behaviour of electrochemical systems. Three conditions must be fulfilled during EIS measurements: causality, linearity, and stability. If any of these conditions is not achieved, then the conclusions obtained from the analysis of the measured spectra may be biased, or even misguided. For this reason, the verification of the compliance of these conditions is critical before accepting any analysis performed on an experimental spectrum. In a previous work, an experimental spectrum quantitative validation technique based on Kramers-Kronig relations was presented. The validation method consists in a Kramers-Kronig (KK) validation test, by equivalent electrical circuit fitting, coupled with a Montecarlo error propagation method. The validation technique builds a consistency region for a given confidence level that allows to discriminate between the individual points of the EIS spectrum that are consistent with the four fundamental hypotheses, and the inconsistent ones. The aim of this work is to validate experimentally if the quantitative validation technique is able to detect nonlinearities. In order to achieve this goal, the EIS spectrum of a markedly nonlinear system was measured experimentally using different perturbation amplitudes. The validation technique was applied to each one of the measured spectra. The method successfully managed to identify large nonlinearities; but did not detect slight ones.

show abstract

Section: Introductionmentioning

confidence: 99%

Application of a Montecarlo based quantitative Kramers-Kronig test for linearity assessment of EIS measurements

Giner-Sanz

Ortega

Pérez-Herranz

2016

Electrochimica Acta

View full text Add to dashboard Cite

show abstract

“…Percebe-se a busca pela otimização das pesquisas com impedância em análise de leite, pelo fato de oito trabalhos estarem usando equipamentos comerciais (LIU et al, 2015;LI et al, 2016;BANCALARI et al, 2016;TRIPATHY et al, 2017;DAS et al, 2018;SCHUMACHER et al, 2019;NASCIMENTO et al, 2020;SOARES et al, 2020), enquanto que quatro apresentaram resultados de equipamentos de desenvolvimento próprio ou com adaptações.…”

Section: Figura 1 (A)unclassified

Escaneamento Por Bioimpedância Elétrica Em Leite: Explorando a Técnica

Geller¹,

Ayres²,

Carvalho³

et al. 2020

Ciência, Tecnologia E Inovação: Do Campo À Mesa

View full text Add to dashboard Cite

Resumo O leite é um produto alimentício de alto valor nutritivo e muito versátil na agroindústria de alimentos. Sua cadeia produtiva movimenta valores significativos, sendo necessário constante controle de qualidade para coibir falsificações e fraudes. Neste sentido, pesquisadores têm se dedicado a desenvolver métodos para análise do leite, bem como para identificar as diversas adulterações deste produto. A proposta deste artigo foi analisar sistematicamente publicações em revistas científicas, nas quais a bioimpedância foi utilizada como técnica para analisar o leite, selecionadas das principais plataformas de busca nos últimos 5 anos. A bioimpedância tem sido utilizada para detectar e monitorar muitos parâmetros e processos biológicos, com a vantagem de ser uma técnica relativamente barata e não invasiva. Em se tratando do leite, os trabalhos analisados, indicaram que a técnica tem se mostrado uma ferramenta promissora para a detecção e quantificação de diversos parâmetros físicos, químicos e biológicos, utilizados na determinação da qualidade do leite bovino, tanto para controle como monitoramento de eventuais alterações na sua composição. Contudo, por ser uma técnica nova no setor, sua utilização para a análise de rotina ainda implica na necessidade de maior pesquisa.

show abstract

“…In terms of bacterial detection, capacitive sensors such as interdigitated electrodes (IDEAs) have gained special interest in the field in recent years [ 121 , 122 ].…”

Section: Amp-based Impedimetric Biosensorsmentioning

confidence: 99%

Antimicrobial Peptides: Powerful Biorecognition Elements to Detect Bacteria in Biosensing Technologies

2018

View full text Add to dashboard Cite

Bacterial infections represent a serious threat in modern medicine. In particular, biofilm treatment in clinical settings is challenging, as biofilms are very resistant to conventional antibiotic therapy and may spread infecting other tissues. To address this problem, biosensing technologies are emerging as a powerful solution to detect and identify bacterial pathogens at the very early stages of the infection, thus allowing rapid and effective treatments before biofilms are formed. Biosensors typically consist of two main parts, a biorecognition moiety that interacts with the target (i.e., bacteria) and a platform that transduces such interaction into a measurable signal. This review will focus on the development of impedimetric biosensors using antimicrobial peptides (AMPs) as biorecognition elements. AMPs belong to the innate immune system of living organisms and are very effective in interacting with bacterial membranes. They offer unique advantages compared to other classical bioreceptor molecules such as enzymes or antibodies. Moreover, impedance-based sensors allow the development of label-free, rapid, sensitive, specific and cost-effective sensing platforms. In summary, AMPs and impedimetric transducers combine excellent properties to produce robust biosensors for the early detection of bacterial infections.

show abstract

Impedance sensor for rapid enumeration of E. coli in milk samples

Cited by 30 publications

References 29 publications

Application of a Montecarlo based quantitative Kramers-Kronig test for linearity assessment of EIS measurements

Application of a Montecarlo based quantitative Kramers-Kronig test for linearity assessment of EIS measurements

Escaneamento Por Bioimpedância Elétrica Em Leite: Explorando a Técnica

Antimicrobial Peptides: Powerful Biorecognition Elements to Detect Bacteria in Biosensing Technologies

Contact Info

Product

Resources

About