HISTORICAL DEVELOPMENT of RAPID METHODS and AUTOMATION IN MICROBIOLOGY<sup>1</sup>

Fung, Daniel Y. C.

doi:10.1111/j.1745-4581.1992.tb00066.x

Cited by 23 publications

(6 citation statements)

References 41 publications

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“…Since traditional microbiological methods are timeconsuming and labor-intensive, rapid and automatic methods are valuable in applied microbiology (12,19). Impedance measurement as a faster technique can replace the conventional plating methods for quality control (8).…”

Section: Discussionmentioning

confidence: 99%

Comparison of Standard and Impedance Methods for the Detection of Enterococci Contamination in Medicinal Herbs in Iran

Ekhtelat

Mahmoodi

Fazlara

et al. 2018

Jundishapur J Nat Pharm Prod

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Background: Medicinal herbs have a long record of application in therapy throughout the world. Today, knowledge and public acceptability of the usage of herbal drugs is on a growing trend. However, medicinal plants may be contaminated with a variety of microorganisms. Enterococci are among nosocomial pathogens that are commonly found in large numbers in foods, plant materials, and vegetables. Objectives: We aimed to detect enterococci contamination in industrial and traditional medicinal herbs by using standard and impedance methods. Methods: Eighty samples of industrial and traditional medicinal herb samples (40 per group) were analyzed for the detection of enterococci by using standard and impedimetric techniques. Results: In general, Enterococcus contamination rate in herb samples was found to be 33.7% and 25% by using standard and impedimetric methods, respectively. McNemar's test did not reflect any significant difference between the two methods in identifying Enterococcus contamination. Comparing the results of enterococci contamination obtained from the two methods, no significant differences were found between the industrial and traditional samples, although contamination was greater in traditional herb samples. Conclusions: The current standard methods for detecting enterococci are labor-intensive and time-consuming compared to advanced methods such as impedance. However, based on our results, sensitivity and specificity of impedance method could vary based on the type of samples being evaluated. However, it is recommended to perform further diagnostic tests for confirming our results.

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Section: Discussionmentioning

confidence: 99%

Comparison of Standard and Impedance Methods for the Detection of Enterococci Contamination in Medicinal Herbs in Iran

Ekhtelat

Mahmoodi

Fazlara

et al. 2018

Jundishapur J Nat Pharm Prod

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“…Impedance techniques have the great potential to solve the two key issues/concerns in detection of foodborne pathogens: rapidity and detection limit. Rapidity includes assay time and number of samples per operation (Fung, 1992). While microchip-based impedance microbiology can effectively reduce the assay time, high throughput microchips would greatly increase the number of samples per operation.…”

Section: Discussionmentioning

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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“…Rapid methods are used to monitor the number, kinds and metabolites of microorganisms with applications in food spoilage, food preservation, food fermentation, food safety and foodborne pathogens. These methods offer the advantage of being less time consuming, requiring smaller volumes of liquid and solid media and reagents and of being less laborious than the conventional methods used in food microbiology (Fung 2002). One potential application with particular importance for the Food Industry, is the monitoring of the antimicrobial activity of food preservatives and antioxidants by an automated rapid method.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Impedance Splitting Method to the Agar Dilution Method for the Estimation of the Antimicrobial Activity of Food Preservatives

Gerolimatou

Batrinou

Tsaknis

et al. 2004

Rapid Methods Automation Mic

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The antimicrobial activity of 10 substances with antimicrobial activity used as food preservatives and antioxidants was evaluated by the Impedance Splitting (IS) method and the Agar Dilution Method on five microorganisms (Escherichia coli (ATCC 10536), Staphylococcus aureus (ATCC 6538), Ps. aeruginosa (ATCC 9027), Candida albicans (ATCC 10231) and Aspergillus niger (ATCC 6275)). In both methods the Maximum Inhibitory Dilution (MID) of the preservatives was determined. MID was equal in 68% of cases and different by one dilution cycle in 32% of cases. The results suggest that the IS method, which is more automated and less laborious, could be used as an alternative method for the estimation of the antimicrobial activity of food antimicrobial substances.

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HISTORICAL DEVELOPMENT of RAPID METHODS and AUTOMATION IN MICROBIOLOGY¹

Cited by 23 publications

References 41 publications

Comparison of Standard and Impedance Methods for the Detection of Enterococci Contamination in Medicinal Herbs in Iran

Comparison of Standard and Impedance Methods for the Detection of Enterococci Contamination in Medicinal Herbs in Iran

Food‐borne Pathogenic Bacteria

Comparison of the Impedance Splitting Method to the Agar Dilution Method for the Estimation of the Antimicrobial Activity of Food Preservatives

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HISTORICAL DEVELOPMENT of RAPID METHODS and AUTOMATION IN MICROBIOLOGY1

Cited by 23 publications

References 41 publications

Comparison of Standard and Impedance Methods for the Detection of Enterococci Contamination in Medicinal Herbs in Iran

Comparison of Standard and Impedance Methods for the Detection of Enterococci Contamination in Medicinal Herbs in Iran

Food‐borne Pathogenic Bacteria

Comparison of the Impedance Splitting Method to the Agar Dilution Method for the Estimation of the Antimicrobial Activity of Food Preservatives

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Product

Resources

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HISTORICAL DEVELOPMENT of RAPID METHODS and AUTOMATION IN MICROBIOLOGY¹