An immunofiltration strip method based on the photothermal effect of gold nanoparticles for the detection of Escherichia coli O157:H7

The Analyst ◽  
2019 ◽  
Vol 144 (2) ◽  
pp. 573-578 ◽  
Author(s):  
Min Jia ◽  
Jingjing Liu ◽  
Jinghua Zhang ◽  
Hongyan Zhang
Keyword(s):  
Escherichia Coli ◽  
Gold Nanoparticles ◽  
Sensitive Detection ◽  
Photothermal Effect ◽  
Escherichia Coli O157 ◽  
Strip Method

A novel photothermal-immunofiltration strip which can simultaneously achieve sensitive detection and sterilization of Escherichia coli O157:H7 was designed.

Prevalence of Escherichia coli O157 in Cattle and Swine in Central Mexico†

2004 ◽  
Vol 67 (10) ◽  
pp. 2274-2276 ◽  
Author(s):  
T. R. CALLAWAY ◽  
R. C. ANDERSON ◽  
G. TELLEZ ◽  
C. ROSARIO ◽  
G. M. NAVA ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Limit Of Detection ◽  
The United States ◽  
Sensitive Detection ◽  
Central Mexico ◽  
Escherichia Coli O157 ◽  
Immunomagnetic Bead ◽  
E Coli ◽  
Detection Techniques ◽  
Swine Farms

Escherichia coli O157:H7 is a foodborne pathogenic bacterium that can reside undetected in the gastrointestinal tract of cattle because colonization by this bacterium is asymptomatic. Recent research has indicated that swine can carry and transmit this pathogen as well. The development of more advanced and sensitive detection techniques has improved the limit of detection and increased sensitivity for this important pathogen. This study was undertaken to determine the prevalence of E. coli O157 in cattle and swine in Mexico with the more sensitive detection technique of immunomagnetic bead separation. Samples (n = 60 per farm) were taken from four cattle and four swine farms (n = 240 cattle samples, n = 240 swine samples) located throughout central Mexico in October 2001. The prevalence of E. coli O157 was found to be only 1.25% on cattle farms and 2.1% on swine farms. The prevalence in cattle in this study is lower than that reported in the United States and could be related to the lower reported prevalence of E. coli O157 in humans in Mexico. However, further research is needed to verify prevalence throughout other regions of Mexico, as well as prevalence during other seasons of the year.

A capacitive DNA sensor for sensitive detection of Escherichia coli O157:H7 in potable water based on the z3276 genetic marker: fabrication and analytical performance

The Analyst ◽  
2020 ◽  
Vol 145 (6) ◽  
pp. 2267-2278 ◽  
Author(s):  
Rehan Deshmukh ◽  
Arun Kumar Prusty ◽  
Utpal Roy ◽  
Sunil Bhand
Keyword(s):  
Escherichia Coli ◽  
Genetic Marker ◽  
Potable Water ◽  
Analytical Performance ◽  
Sensitive Detection ◽  
Escherichia Coli O157 ◽  
Dna Sensor ◽  
Label Free ◽  
Dna Sensing ◽  
Water Based

We report a label-free biosensor for the detection of Escherichia coli O157:H7 ATCC 43895 in potable water using a newly designed DNA sensing probe targeting the z3276 genetic marker.

A gold nanoparticles-assisted multiplex PCR assay for simultaneous detection of Salmonella typhimurium, Listeria monocytogenes and Escherichia coli O157:H7

2020 ◽  
Vol 12 (2) ◽  
pp. 212-217 ◽  
Author(s):  
Juan Du ◽  
Shujing Wu ◽  
Liyuan Niu ◽  
Junguang Li ◽  
Dianbo Zhao ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Gold Nanoparticles ◽  
Listeria Monocytogenes ◽  
Salmonella Typhimurium ◽  
Multiplex Pcr ◽  
Simultaneous Detection ◽  
Escherichia Coli O157 ◽  
Pcr Assay ◽  
Multiplex Pcr Assay ◽  
Pcr Product

Unfunctionalized flower-shaped AuNPs is used as colorimetric sensor for PCR product detection by naked eyes.

scholarly journals A novel fluorometric aptasensor based on carbon nanocomposite for sensitive detection of Escherichia coli O157:H7 in milk

2020 ◽  
Vol 103 (9) ◽  
pp. 7879-7889
Author(s):  
Tao Yang ◽  
Xinyan Yang ◽  
Xiaojie Guo ◽  
Shiqian Fu ◽  
Jiapeng Zheng ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Sensitive Detection ◽  
Escherichia Coli O157 ◽  
Carbon Nanocomposite

scholarly journals Sensitive Detection of Escherichia coli O157:H7 in Food Products by Impedimetric Immunosensors

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2168 ◽  
Author(s):  
Francesca Malvano ◽  
Roberto Pilloton ◽  
Donatella Albanese
Keyword(s):  
Escherichia Coli ◽  
Food Products ◽  
Sensitive Detection ◽  
Escherichia Coli O157

A fluorescence quenching based gene assay for Escherichia coli O157:H7 using graphene quantum dots and gold nanoparticles

2019 ◽  
Vol 186 (12) ◽  
Author(s):  
Suria Mohd Saad ◽  
Jaafar Abdullah ◽  
Suraya Abd Rashid ◽  
Yap Wing Fen ◽  
Faridah Salam ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Quantum Dots ◽  
Gold Nanoparticles ◽  
Fluorescence Quenching ◽  
Graphene Quantum Dots ◽  
Escherichia Coli O157 ◽  
Gene Assay
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