Fluorescent garlic-capped Ag nanoparticles as dual sensors for the detection of acetone and acrylamide

El-Naka, Marwa Ahmed; El‐Dissouky, Ali; Ali, Gamila Y.; Ebrahim, Shaker; Shokry, Azza

doi:10.1039/d2ra06789g

Cited by 7 publications

(3 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar changes were not observed in color and spectra were found in the AuNRs/aptamer assembly after adding 40 nM of TETand AMP respectively. Also, the effect of interfering agents as the crucial parameters was performed according to the previous studies [33] The total aggregation of plasmonic nanostructures was seen in the presence of OTC, TET and AMP, verifying that ssDNA‐SH‐AuNRs interacts with OTC specifically and no interference effect was observed.…”

Section: Resultsmentioning

confidence: 70%

Aptamer‐Based Colorimetric Detection of Oxytetracycline by a LSPR‐Based Assay of Gold Nanorods in Honey Sample**

Mehrabi,

Dadmehr,

Ranjbar

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

Oxytetracycline (OTC) as the frequently applied antibiotics present in human and animal diets and its residue may results to various toxic effects. So, there is a crucial need for developing sensitive method for detection of OTC. Aptamer‐based biosensors (aptasensors) are frequently used in recent applied detection strategies with high affinity and specificity. In the present study, a colorimetric aptasensor was developed for detection of oxytetracycline (OTC) based on aggregation of aptamer functionalized AuNRs. The synthesized AuNRs were characterized and functionalized with specific DNA oligonucleotide as the aptamer to generate an optical signal after binding to the OTC antibiotic. The sensitivity of optical changes in spectroscopic analysis was improved under ambient temperature that resulted in aptamer folded structure and subsequent aggregation state of AuNRs. The longitudinal surface plasmon resonance (LSPR) of AuNRs was decreased in the linear range of applied OTC concentration from 0.1 nM to 100 nM with a detection limit of 0.04 nM. The proposed method was facile and showed sensitive and selective results, that would be consider as an alternative and efficient approach toward rapid detection of OTC.

show abstract

Section: Resultsmentioning

confidence: 70%

Aptamer‐Based Colorimetric Detection of Oxytetracycline by a LSPR‐Based Assay of Gold Nanorods in Honey Sample**

Mehrabi,

Dadmehr,

Ranjbar

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…The theory behind the liquid mixture adopted in this study is that different volume fractions of acetone in DI water lead to variations in the relative permittivity of the mixture. To show intuitively how the relative permittivity of the binary mixture changes with the concentration of acetone, a widely used Maxwell-Garnett model [110], [111] can be considered, which can be calculated mathematically using (1),…”

Section: Contactless Liquid Acetone/water Detectionmentioning

confidence: 99%

“…A CETONE is a commonly used solvent in industry, laboratory, medical, cosmetic, and household applications due to its solvency properties and ability to evaporate quickly [1], [2]. However, high levels of acetone in the body can be toxic [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Nanosilver Inkjet-Printed CPW-Fed Flexible Antenna Sensor for Contactless Liquid Acetone/Water Detection

Hossain,

Dang,

Cheffena

2024

IEEE Sensors J.

View full text Add to dashboard Cite

We present the design and development of a combined octagonal and square-shaped coplanar waveguide (CPW)fed nanosilver inkjet-printed on Kapton polyimide-based flexible antenna sensor for liquid acetone/water detection which is the first of its kind. Sensing was performed by monitoring the resonant frequency and its corresponding amplitude of the reflection coefficient. Our experimental results show that the antenna sensor is able to distinguish between water and acetone, and it can also respond to varying concentration levels of acetone. The overall size of the antenna sensor is 0.564λ 0 ×0.627λ 0 ×0.001175λ 0 , where λ 0 is calculated at 4.7 GHz. The proposed sensor can operate under deformed conditions, making it suitable for sensing near a liquid mixture (acetone-water) by wrapping around the sample holder surface. The results without materials under test show a 10-dB impedance bandwidth between 4.61 GHz and 4.81 GHz in simulations, and from 4.42 GHz to 4.86 GHz in measurements. The simulation results also show a peak realized gain of 4.44 dBi with a maximum total efficiency of 92.8%. In comparison, the measured gain of 4.12 dBi at 4.7 GHz with a maximum total efficiency of 76.5%. Furthermore, experimental results considering the materials under test show that the resonant frequency of the sensor was at 4.63 GHz and 4.54 GHz without-and with-100% acetone presence in liquid mixtures, respectively. Thus, the proposed antenna sensor has great potential in non-contact liquid acetone sensing applications, paving the way for antenna-based liquid sensing solutions.

show abstract

3‐Aminopropyl Triethoxysilane Capped ZnO Quantum Dots for Acrylamide Detection

Saber,

Badie,

El‐Dissouky

et al. 2023

Adv Quantum Tech

View full text Add to dashboard Cite

Acrylamide (AA) is a carcinogenic, neurotoxin, and pregnancy‐harmful agent produced in food thermal processing. A specified excellent analytical technique performance is desired for detecting low AA concentration for human protection from its adverse impacts. A photoluminescent sensor APTES capped zinc oxide quantum dots (APTES/ZnO QDs) has been synthesized for AA quantification. Different capping agent's effects, for instance, triethanolamine (TEA), oleic acid (OA), tetraethyl orthosilicate (TEOS), polyvinyl pyrrolidone (PVP), 3‐aminopropyl triethoxysilane (APTES), and ethyl acetate (EA) on ZnO QDs are examined. The photoluminescence (PL) response of pristine ZnO QDs and APTES/ZnO QDs probe toward AA concentrations is investigated. This developed sensor exhibits selectivity as well as sensitivity for detecting AA ranging from 0.01 to 8.0 mM with a strong correlation coefficient (R2) of 0.9998 and a limit of detection (LOD) of 0.0019 mM, which is lesser than the WHO and European Union's guideline value. The possible photoluminescence enhancement mechanism of the APTES/ZnO QDs probe for AA detection is studied. Additionally, the reliability and performance of this facile, rapid, and precise analytical technique for quantifying AA in potato chip samples is confirmed and revealed satisfactory recoveries from 99.30 to 101.69% with relative standard deviations (RSD) from 1.4 to 1.6%.

show abstract

Fluorescent garlic-capped Ag nanoparticles as dual sensors for the detection of acetone and acrylamide

Abstract: G-Ag NPs succeeded to detect and quantify acrylamide and acetone selectively even in presence of other co-existing interfering substances through a fluorescence quenching mechanism.

Cited by 7 publications

References 42 publications

Aptamer‐Based Colorimetric Detection of Oxytetracycline by a LSPR‐Based Assay of Gold Nanorods in Honey Sample**

Aptamer‐Based Colorimetric Detection of Oxytetracycline by a LSPR‐Based Assay of Gold Nanorods in Honey Sample**

Nanosilver Inkjet-Printed CPW-Fed Flexible Antenna Sensor for Contactless Liquid Acetone/Water Detection

3‐Aminopropyl Triethoxysilane Capped ZnO Quantum Dots for Acrylamide Detection

Contact Info

Product

Resources

About