Improvements to a lysine medium for detection of salmonellas by elctrical conductance

Smith, P.J.; Bolton, F. J.; Gayner, V. E.; Eccles, A.

doi:10.1111/j.1472-765x.1990.tb01281.x

Cited by 12 publications

(4 citation statements)

References 8 publications

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“…Impedance microbiology measures the variations in electrical impedance of a culture medium or a reactive solution that results from the bacterial growth [ 55 , 88 ]. Previous studies have reported the use of this technique to detect and quantify different species of bacteria [ 14 , 89 , 90 ] such as Salmonella [ 91 , 92 , 93 ], E. coli [ 94 , 95 ], Listeria innocua and Listeria monocytogenes [ 96 ], Staphylococcus aureus [ 97 ], Enterococcus faeccalis [ 98 ], coliforms, Listeria spp., and L. monocytogenes [ 55 ]. Detection times ranging from 24 hours [ 99 ] to seconds [ 100 ] have been reported.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Combined Dielectrophoresis and Impedance Systems for Bacteria Analysis in Microfluidic On-Chip Platforms

Páez-Avilés

Juanola-Feliu

Punter-Villagrasa

et al. 2016

Sensors

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Bacteria concentration and detection is time-consuming in regular microbiology procedures aimed to facilitate the detection and analysis of these cells at very low concentrations. Traditional methods are effective but often require several days to complete. This scenario results in low bioanalytical and diagnostic methodologies with associated increased costs and complexity. In recent years, the exploitation of the intrinsic electrical properties of cells has emerged as an appealing alternative approach for concentrating and detecting bacteria. The combination of dielectrophoresis (DEP) and impedance analysis (IA) in microfluidic on-chip platforms could be key to develop rapid, accurate, portable, simple-to-use and cost-effective microfluidic devices with a promising impact in medicine, public health, agricultural, food control and environmental areas. The present document reviews recent DEP and IA combined approaches and the latest relevant improvements focusing on bacteria concentration and detection, including selectivity, sensitivity, detection time, and conductivity variation enhancements. Furthermore, this review analyses future trends and challenges which need to be addressed in order to successfully commercialize these platforms resulting in an adequate social return of public-funded investments.

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Section: Theoretical Backgroundmentioning

confidence: 99%

Combined Dielectrophoresis and Impedance Systems for Bacteria Analysis in Microfluidic On-Chip Platforms

Páez-Avilés

Juanola-Feliu

Punter-Villagrasa

et al. 2016

Sensors

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“…The work of Bolton (1990) has already shown the indirect technique to be a powerful tool for working with strains of Staph. aureus, Listeria monocytogenes, Enterococcus faecalis, Bacillus subtilis, Escherichia coli, Pseudomonas aeruginosa, Aeromonas hydrophila and Salmonella spp.…”

Section: Indirect Impedancementioning

confidence: 99%

“…The modified lysine medium was not as sensitive as S C / T / D for the detection of salmonella from animal feeds (70% of impedance positive samples). However, it was proposed that both S C / T / D and lysine media should be used in impedance procedures (Smith et al 1990). Davda and Pugh (1991) developed a modified ornithine decarboxylase broth and a selenite cystine trimethylamine oxide deoxyribose medium to improve selection and detection of salmonellae.…”

Section: Salmonella Detectionmentioning

confidence: 99%

Impedance microbiology—a rapid change for microbiologists

Silley

Forsythe

1996

Journal of Applied Bacteriology

180

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“…Greater impedance changes were obtained with mannitol or deoxyribose in place of dulcitol (Pettipher and Watts, 1989a). Other Salmonella impedance medium for selective growth between genus, species, and strain were developed by several research groups (Ogden, 1988;Bullock and Fordsham, 1989;Pettipher and Watts, 1989b;Simth et al, 1990;Davda and Pugh, 1991). Blivet et al (1998) developed a new impedance medium that supported the growth of Salmonella serotypes and inhibited non-Salmonella strains in pure culture.…”

Section: Classic Impedance Microbiologymentioning

confidence: 99%

Food‐borne Pathogenic Bacteria

Shi

Xie

Zhou

2017

Food Safety in China

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The realization of rapid, sensitive, and specific methods to detect foodborne pathogenic bacteria is central to implementing effective practice to ensure food safety and security. As a principle of transduction, the impedance technique has been applied in the field of microbiology as a means to detect and/or quantify foodborne pathogenic bacteria. The integration of impedance with biological recognition technology for detection of bacteria has led to the development of impedance biosensors that are finding wide-spread use in the recent years. This paper reviews the progress and applications of impedance microbiology for foodborne pathogenic bacteria detection, particularly the new aspects that have been added to this subject in the past few years, including the use of interdigitated microelectrodes, the development of chip-based impedance microbiology, and the use of equivalent circuits for analysis of the impedance systems. This paper also reviews the significant developments of impedance biosensors for bacteria detection in the past 5 years, focusing on microfabricated microelectrodes-based and microfluidic-based Faradaic electrochemical impedance biosensors, non-Faradaic impedance biosensors, and the integration of impedance biosensors with other techniques such as dielectrophoresis and electropermeabilization. Published by Elsevier Inc.

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Improvements to a lysine medium for detection of salmonellas by elctrical conductance

Cited by 12 publications

References 8 publications

Combined Dielectrophoresis and Impedance Systems for Bacteria Analysis in Microfluidic On-Chip Platforms

Combined Dielectrophoresis and Impedance Systems for Bacteria Analysis in Microfluidic On-Chip Platforms

Impedance microbiology—a rapid change for microbiologists

Food‐borne Pathogenic Bacteria

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