Detecting 5-morpholino-3-amino-2-oxazolidone residue in food with label-free electrochemical impedimetric immunosensor

Jin, Wenjie; Yang, Gongjun; Wu, Liping; Wang, Qianqian; Shao, Hongxia; Qin, Aijian; Yu, Bing; Li, Dongming; Cai, Baoliang

doi:10.1016/j.foodcont.2011.03.017

Cited by 37 publications

(14 citation statements)

References 47 publications

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“…After DpAu were deposited on the surface of DMDPSE/Au, the Rct was rapidly decreased to a very small value (curve c) due to the good conductivity of DpAu. This result demonstrated that DpAu have been successfully assembled onto a DMDPSE/Au electrode through the eSH group of DMDPSE, which is constant with a previous report (Jin et al, 2011). When some anticarbofuran antibodies were immobilized on the DpAu/DMDPSE/Au electrode surface, the Rct obviously increased to 8.86 kU (curve d).…”

Section: Resultssupporting

confidence: 90%

“…However, the stability of AueN bond is below AueS bond and these double eSH groups in the long chain alkyl dimercapto compound may adsorb simultaneously onto the bare Au electrode thus forming loops structure (Raj, Tokuda, & Ohsaka, 2001;Schreiber, 2000;Wang, Liu, Wang, & Jin, 2007). Therefore, the use of dimercapto compound with rigid and double eSH groups is necessary to forming a stable goldsulfide structure which has a lot of superiority in good stability, compactness and regularity (Jin, Yang, Wu, & Wang, 2011). 4,4 0 -thiobisbenzenethiol (DMDPSE) with rigid and double eSH groups just satisfies the requirements above.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Amperometric immunosensor based on deposited gold nanocrystals/4,4′-thiobisbenzenethiol for determination of carbofuran

2012

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Amperometric immunosensor based on deposited gold nanocrystals/4,4′-thiobisbenzenethiol for determination of carbofuran

2012

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“…Semicarbazide (SEM) belonging to the hydrazine family of chemicals is determined in food as a marker to detect the illegal use of the banned antibiotic nitrofurazone (Jiang et al 2012;Jin et al 2011;McCracken et al 2013). It was recently found that SEM is also present in glass jars and bottles closed with metal lids sealed with plastic gaskets that are foamed using the azodicarbonamide (ADC) as blowing agent ( Fig.…”

Section: Introductionmentioning

confidence: 99%

A Rapid and Sensitive Method for Semicarbazide Screening in Foodstuffs by HPLC with Fluorescence Detection

Tang

Wang

et al. 2014

Food Anal. Methods

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Semicarbazide (SEM) has been proven to extensively exist in foodstuffs due to anthropogenic factor in food processing and possesses various toxic effects on human health. Although many methods have been developed, they often require long analytical time, complex laboratory equipment, trained personnel, difficultly prepared antibodies, or relatively expensive equipment. The present study developed a new method for SEM determination by HPLC with fluorescence detection (FLD). The fluorescence reagent, 2-(11H-benzo[a]carbazol-11-yl) ethyl chloroformate (BCEC), was first used for SEM labeling. The fluorescent labeling conditions were optimized systematically. SEM can be labeled in only 10 min at 40°C. The labeled SEM was analyzed on an eclipse XDB-C8 column in 8 min. The new method offered the low LOD of 0.4 μg/kg at a signal-to-noise ratio of 3 and also exhibited excellent reproducibility, precision, and accuracy. When applied to analyze several foodstuffs, it showed good applicability. The developed method has been proven to be simple, inexpensive, selective, sensitive, accurate, and reliable for SEM analysis in foodstuffs. Furthermore, this developed method should have a powerful potential in the analysis of SEM from many other food samples.

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“…Because of its simple use and portability in relatively complex samples, biosensors off er a potential alternative to advanced bioanalytical systems (Jin et al 2011).…”

Section: Introductionmentioning

confidence: 99%

A review on impedimetric biosensors

Bahadır

Sezgintürk

2014

Artificial Cells, Nanomedicine, and Biotechnology

234

131

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Electrochemical impedance spectroscopy (EIS) is a sensitive technique for the analysis of the interfacial properties related to biorecognition events such as reactions catalyzed by enzymes, biomolecular recognition events of specific binding proteins, lectins, receptors, nucleic acids, whole cells, antibodies or antibody-related substances, occurring at the modified surface. Many studies on impedimetric biosensors are focused on immunosensors and aptasensors. In impedimetric immunosensors, antibodies and antigens are bound each other and thus immunocomplex is formed and the electrode is coated with a blocking layer. As a result of that electron transfer resistance increases. In impedimetric aptasensors, impedance changes following the binding of target sequences, conformational changes, or DNA damages. Impedimetric biosensors allow direct detection of biomolecular recognition events without using enzyme labels. In this paper, impedimetric biosensors are reviewed and the most interesting ones are discussed.

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Detecting 5-morpholino-3-amino-2-oxazolidone residue in food with label-free electrochemical impedimetric immunosensor

Cited by 37 publications

References 47 publications

Amperometric immunosensor based on deposited gold nanocrystals/4,4′-thiobisbenzenethiol for determination of carbofuran

Amperometric immunosensor based on deposited gold nanocrystals/4,4′-thiobisbenzenethiol for determination of carbofuran

A Rapid and Sensitive Method for Semicarbazide Screening in Foodstuffs by HPLC with Fluorescence Detection

A review on impedimetric biosensors

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