Metal-organic framework-based sensors for the detection of toxins and foodborne pathogens

Yang, Zidong; Zhang, Weijia; Yin, Ye; Fang, Weiming; Xue, Huaiguo

doi:10.1016/j.foodcont.2021.108684

Cited by 38 publications

(12 citation statements)

References 137 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The advantage of this method is the image resolution and monitoring sensitivity with magnetic bacterial enrichment and the fluorescence dye, 4-MUCAP with in 20 min. The advanced software system can be used to analyze the photograph captured by using the smartphone to quantify the concentration of bacterial contaminants in the water samples [ 46 , 47 ]. Recently, the AuNPs/Au electrode and Salmonella phage L66 (phage L66) has been employed to analysis the electron transfer ability for senor of Salmonella [ 42 ].…”

Section: Discussionmentioning

confidence: 99%

Design and Development of Magnetic Iron Core Gold Nanoparticle-Based Fluorescent Multiplex Assay to Detect Salmonella

et al. 2022

View full text Add to dashboard Cite

Salmonella is a bacterial pathogen which is one of the leading causes of severe illnesses in humans. The current study involved the design and development of two methods, respectively using iron oxide nanoparticle (IONP) and iron core gold nanoparticle (ICGNP), conjugated with the Salmonella antibody and the fluorophore, 4-Methylumbelliferyl Caprylate (4-MUCAP), used as an indicator, for its selective and sensitive detection in contaminated food products. Twenty double-blind beverage samples, spiked with Salmonella enteritidis, Staphylococcus aureus, and Escherichia coli, were prepared in sterile Eppendorf® tubes at room temperature. The gold layer and spikes of ICGNPs increased the surface areas. The ratio of the surface area is 0.76 (IONPs/ICGNPs). The comparative sensitivity and specificity of the IONP-based and the ICGNP-based methods to detect Salmonella were determined. The ICGNP method shows the limit of detection is 32 Salmonella per mL. The ICGNPs had an 83.3% sensitivity and a 92.9% specificity value for the presence and detection of Salmonella. The IONP method resulted in a limit of detection of 150 Salmonella per mL, and a 66.7% sensitivity and 83.3% specificity for the presence and detection of Salmonella. The higher surface area of ICGNPs increases the efficiency of detection. The monitoring of Salmonella can thus be achieved by a rapid magnetic fluorescent assay using a smartphone for image capture and analyze, providing quantitative results. The findings from the present study would help to detect Salmonella rapidly in water. It can improve the microbial quality of water and food safety due to the presence of Salmonella in the water environment.

show abstract

Section: Discussionmentioning

confidence: 99%

Design and Development of Magnetic Iron Core Gold Nanoparticle-Based Fluorescent Multiplex Assay to Detect Salmonella

et al. 2022

View full text Add to dashboard Cite

show abstract

“…For example, common active metal nodes, such as Co, Cu, Zn, and Cr, and their redox activity can enhance the catalytic ability of MOFs ( Liu et al, 2020 ). In addition, organic ligands with redox activity are also attributed to the catalytic active sites of MOFs ( Yang et al, 2022 ). In general, the organic ligands for MOFs can be divided into chemical ligands and biological ligands ( Smaldone et al, 2010 ).…”

Section: Mechanism Of Metal–organic Framework-based Catalysts In Elec...mentioning

confidence: 99%

“…The superior structure of MOFs also plays an important effect on the boosted electrochemical activity. Their flexible and highly porous structure can be helpful to the easy diffusion of analyte molecules, facilitating the interaction between the host and analyte ( Liao et al, 2018 ; Yang et al, 2022 ). Furthermore, MOFs, with a porous structure and superior specific surface area, act as a good carrier to form composite materials, resulting in the improved electrochemical activity ( Kitagawa et al, 2004 ; Cui et al, 2013 ; Wang C et al, 2018 ; Li D et al, 2019 ; Wang Y et al, 2020 ).…”

Section: Mechanism Of Metal–organic Framework-based Catalysts In Elec...mentioning

confidence: 99%

“…Recently, nanomaterials with the advantages of high specific surface area, excellent catalytic performance, conductivity, and biocompatibility, can help the electrochemical sensors amplify signals and improve the sensitivity of the sensors as well as reduce the detection range ( Yang Q et al, 2017 ). An efficient electrochemical sensor requires two requirements: high specificity of the signal tag and an electrode with superior sensitivity and stability ( Yang ZH et al, 2017 ; Yang et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Advanced Metal–Organic Frameworks-Based Catalysts in Electrochemical Sensors

et al. 2022

View full text Add to dashboard Cite

Developing efficient catalysts is vital for the application of electrochemical sensors. Metal–organic frameworks (MOFs), with high porosity, large specific surface area, good conductivity, and biocompatibility, have been widely used in catalysis, adsorption, separation, and energy storage applications. In this invited review, the recent advances of a novel MOF-based catalysts in electrochemical sensors are summarized. Based on the structure–activity–performance relationship of MOF-based catalysts, their mechanism as electrochemical sensor, including metal cations, synthetic ligands, and structure, are introduced. Then, the MOF-based composites are successively divided into metal-based, carbon-based, and other MOF-based composites. Furthermore, their application in environmental monitoring, food safety control, and clinical diagnosis is discussed. The perspective and challenges for advanced MOF-based composites are proposed at the end of this contribution.

show abstract

“…MOFs are hybrid materials that combine the unique properties of both types of unit. 14 Because of the aforementioned properties, MOF-based materials have been used in other applications like adsorption, 15 sensing, 16,17 photocatalytic reduction of carbon dioxide into renewable fuels, 18,19 gas storage and separation and water purification, [20][21][22] photocatalysis, 23,24 catalysis 25,26 and advanced oxidation processes. 27 Various MOF-based materials have been found to be useful for the treatment of a variety of pollutants.…”

Section: Introductionmentioning

confidence: 99%

Ultra-fast and robust capture of fluoride by an amino terephthalic acid-facilitated lanthanum-based organic framework: insight into performance and mechanisms

et al. 2023

View full text Add to dashboard Cite

show abstract

Metal-organic framework-based sensors for the detection of toxins and foodborne pathogens

Cited by 38 publications

References 137 publications

Design and Development of Magnetic Iron Core Gold Nanoparticle-Based Fluorescent Multiplex Assay to Detect Salmonella

Design and Development of Magnetic Iron Core Gold Nanoparticle-Based Fluorescent Multiplex Assay to Detect Salmonella

Advanced Metal–Organic Frameworks-Based Catalysts in Electrochemical Sensors

Ultra-fast and robust capture of fluoride by an amino terephthalic acid-facilitated lanthanum-based organic framework: insight into performance and mechanisms

Contact Info

Product

Resources

About