Dual-aptamers labeled polydopamine-polyethyleneimine copolymer dots assisted engineering a fluorescence biosensor for sensitive detection of Pseudomonas aeruginosa in food samples

2020 ◽  
Vol 224 ◽  
pp. 117417 ◽  
Author(s):  
Zitao Zhong ◽  
Ran Gao ◽  
Qingmei Chen ◽  
Li Jia
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Food Samples ◽  
Sensitive Detection ◽  
Fluorescence Biosensor

A highly sensitive fluorescence biosensor for detection of Staphylococcus aureus based on HCR-mediated three-way DNA junction nicking enzyme assisted signal amplification

The Analyst ◽  
2021 ◽  
Author(s):  
Chuyan Zhang ◽  
Zewei Luo ◽  
Mengfan Wu ◽  
Wei Ning ◽  
Ziyi Tian ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Food Safety ◽  
Signal Amplification ◽  
Sensitive Detection ◽  
Safety Control ◽  
Food Borne ◽  
Highly Sensitive ◽  
Fluorescence Biosensor ◽  
Highly Sensitive Detection ◽  
Nicking Enzyme

Sensitive and efficient monitoring of food-borne bacteria is of great importance for food safety control. Herein, a novel biosensor for highly sensitive detection of Staphylococcus aureus (S. aureus) was constructed...

Detection of Cryptosporidium parvum Oocysts on Fresh Vegetables and Herbs Using Antibodies Specific for a Cryptosporidium parvum Viral Antigen

2005 ◽  
Vol 68 (5) ◽  
pp. 1093-1096 ◽  
Author(s):  
K. E. KNIEL ◽  
M. C. JENKINS
Keyword(s):  
Cryptosporidium Parvum ◽  
Viral Antigen ◽  
Blot Hybridization ◽  
Surface Antigens ◽  
Food Samples ◽  
Sensitive Detection ◽  
Dot Blot ◽  
Dot Blot Hybridization ◽  
Fresh Vegetables ◽  
Cryptosporidium Parvum Oocysts

The purpose of this study was to determine if the viral symbiont of Cryptosporidium parvum (CPV) sporozoites could be used as a target for sensitive detection of the parasite in food samples. Polyclonal sera specific to the recombinant viral capsid protein (rCPV40) was used in a dot blot hybridization assay to detect oocysts recovered from green onions and cilantro. Small batches of chopped green onions and cilantro leaves were artificially contaminated with three different concentrations of oocysts: 106, 102, and 101. rCPV40 was superior in detecting oocysts compared with other antibodies directed toward total oocyst protein and oocyst surface antigens. This study provides evidence that CPV is an excellent target for sensitive detection of C. parvum oocysts in foods.

scholarly journals Rapid and highly sensitive detection of pyocyanin biomarker in different Pseudomonas aeruginosa infections using gold nanoparticles modified sensor

PLoS ONE ◽  
2019 ◽  
Vol 14 (7) ◽  
pp. e0216438 ◽  
Author(s):  
Amal A. Elkhawaga ◽  
Marwa M. Khalifa ◽  
Omnia El-badawy ◽  
Mona A. Hassan ◽  
Waleed A. El-Said
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Gold Nanoparticles ◽  
Sensitive Detection ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
Modified Sensor

Metal-polydopamine framework based lateral flow assay for high sensitive detection of tetracycline in food samples

2021 ◽  
Vol 339 ◽  
pp. 127854
Author(s):  
Yongming Tian ◽  
Tong Bu ◽  
Meng Zhang ◽  
Xinyu Sun ◽  
Pei Jia ◽  
...  
Keyword(s):  
Food Samples ◽  
Lateral Flow ◽  
Lateral Flow Assay ◽  
Sensitive Detection

scholarly journals Detection of xanthine in food samples with an electrochemical biosensor based on PEDOT:PSS and functionalized gold nanoparticles

RSC Advances ◽  
2020 ◽  
Vol 10 (59) ◽  
pp. 36147-36154
Author(s):  
M. Z. H. Khan ◽  
M. S. Ahommed ◽  
M. Daizy
Keyword(s):  
Gold Nanoparticles ◽  
Glassy Carbon ◽  
Electrochemical Biosensor ◽  
Food Samples ◽  
Sensitive Detection ◽  
Carbon Electrodes ◽  
Polystyrene Sulfonate ◽  
Host Matrix ◽  
Glassy Carbon Electrodes ◽  
Functionalized Gold Nanoparticles

An innovative biosensor with glassy carbon electrodes modified with poly(3,4-ethylenedioxythiophene) polystyrene sulfonate nanocomposites as a host matrix with functionalized gold nanoparticles for the selective and sensitive detection of xanthine.

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