Specific bioanalytical optical and photoelectrochemical assays for detection of methanol in alcoholic beverages

Barroso, Javier; Díez‐Buitrago, Beatriz; Saá, Laura; Möller, Marco; Briz, Nerea; Pavlov, Valeri

doi:10.1016/j.bios.2017.10.022

Cited by 26 publications

(9 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These substances are commonly used in industry and as household products. Too high exposure to volatile organic compounds can have both short- and long-term adverse effects on health, such as respiratory failure [108,109,110,111]. An exemplary QDs-based sensors for volatile substances determination are presented in Table 9.…”

Section: Applications Of Qds-based Sensorsmentioning

confidence: 99%

See 1 more Smart Citation

Optical Sensors Based on II-VI Quantum Dots

et al. 2019

View full text Add to dashboard Cite

Fundamentals of quantum dots (QDs) sensing phenomena show the predominance of these fluorophores over standard organic dyes, mainly because of their unique optical properties such as sharp and tunable emission spectra, high emission quantum yield and broad absorption. Moreover, they also indicate no photo bleaching and can be also grown as no blinking emitters. Due to these properties, QDs may be used e.g., for multiplex testing of the analyte by simultaneously detecting multiple or very weak signals. Physico-chemical mechanisms used for analyte detection, like analyte stimulated QDs aggregation, nonradiative Förster resonance energy transfer (FRET) exhibit a number of QDs, which can be applied in sensors. Quantum dots-based sensors find use in the detection of ions, organic compounds (e.g., proteins, sugars, volatile substances) as well as bacteria and viruses.

show abstract

Section: Applications Of Qds-based Sensorsmentioning

confidence: 99%

“…Barroso et al [110] presented a new strategy for the detection of methanol using fluorescence spectroscopy and photoelectrochemical (PEC) analysis. The analytical system is based on the oxidation of cysteine (CSH) with hydrogen peroxide (H 2 O 2 ) enzymatically generated by alcohol oxidase (AOx).…”

Section: Applications Of Qds-based Sensorsmentioning

confidence: 99%

Optical Sensors Based on II-VI Quantum Dots

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Although methanol is present in small amounts in alcoholic beverages, in large amounts it can cause intoxication or death (the lethal dose lies between 30 and 120 mL). Intoxication symptomatology depends on the amount ingested and can cause headache, nausea, vomiting, damage to the retina, internal hemorrhage, liver and renal failure, and death (Barroso et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Quantification of adulterants in mezcal by means of FT-MIR and FT-NIR spectroscopy coupled to multivariate analysis

Arenas

Meza-Márquez

Velázquez-Hernández³

et al. 2020

CyTA - Journal of Food

View full text Add to dashboard Cite

Mezcal is an alcoholic beverage with a high commercial value and is often adulterated to obtain economical profit, however, adulteration is an illegal practice that can damage consumer's health. FT-MIR and FT-NIR spectroscopy along with multivariate analysis were used to quantify adulterants (water, ethanol, methanol) in three mezcal classes (white, rested, aged). Calibration models were constructed using principal component regression (PCR), partial least squares with single y-variable (PLS1) and partial least squares with multiple y-variables (PLS2) algorithms. The PLS2 showed the best predictive results for FT-MIR (R 2 = 0.9579-0.9895); and PLS1 for FT-NIR (R 2 = 0.9401-0.9665). The predictions of models were compared to gas chromatography with flame ionization detector (GC-FID) and no significant difference was found (p ≤ 0.05). Results show that the authenticity of mezcal can be verified through FT-MIR and FT-NIR spectroscopy coupled to multivariate analysis because it is reliable and fast (as compared to GC-FID). Cuantificación de adulterantes en mezcal mediante espectroscopia FT-MIR y FT-NIR acoplada al análisis multivariante RESUMEN El mezcal es una bebida alcohólica con alto valor comercial que comúnmente se adultera para obtener beneficios económicos, sin embargo, esto es ilegal y puede dañar la salud de los consumidores. FT-MIR y FT-NIR junto con el análisis multivariante se utilizó para cuantificar adulterantes (agua, etanol, metanol) en tres clases de mezcal (blanco, reposado, añejo). Los modelos de calibración se construyeron con los algoritmos de Regresión de Componentes Principales (PCR), Mínimos Cuadrados Parciales con una variable (PLS1) y Mínimos Cuadrados Parciales con múltiples variables (PLS2). PLS2 mostró las mejores predicciones en FT-MIR (R 2 = 0.9579-0.9895); y PLS1 en FT-NIR (R 2 = 0.9401-0.9665). Los resultados se compararon con cromatografía de gases con detector de ionización de llama (CG-FID) y no presentaron diferencia significativa (p ≤ 0.05). La autenticidad del mezcal se puede verificar con FT-MIR y FT-NIR acoplada al análisis multivariante ya que es confiable y rápida (en comparación con CG-FID).

show abstract

“…To overcome this issue, the in situ formation of nanomaterials as a result of an enzymatic reaction is presented as the best alternative. Increasing number of publications in bioanalysis is dedicated to the use of enzymes for the in situ formation of nanoparticles as the read‐out signal mainly due to their optical and electrochemical properties. This approach maintains the advantages of the previous strategy and also avoids the need of pre‐synthesized nanoparticles simplifying the bioassay.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis and Characterization of Ag/Ag₂S Nanoparticles Enzymatically Grown In Situ and their Application to the Colorimetric Detection of Glucose Oxidase

et al. 2019

Self Cite

View full text Add to dashboard Cite

This work describes a simple, fast and reproducible biochemical reaction to modulate the growth of silver/silver sulfide nanoparticles (Ag/Ag 2 S NPs) through the enzymatic activity of the glucose oxidase (GOx). This process occurs in aqueous buffered solutions at room temperature under physiological conditions with participation of inexpensive precursors. Oxidation of 1thio-β-D-glucose is catalyzed by GOx yielding hydrogen sulfide. Direct interaction between silver nitrate and enzymatically produced H 2 S in the presence of citric acid as capping agent leads to the generation of Ag/Ag 2 S NPs. UV-vis spectroscopy is employed to characterize absorbance spectra of resulting Ag/ Ag 2 S NPs with the highest signal-to-noise ratio at 385 nm. Enzymatically produced Ag/Ag 2 S NPs are characterized by TEM, XPS, DLS and XRD. This new colorimetric method was applied to the detection of enzymatic activity of GOx (LOD 0.557 μg mL-1 and linear range up to 1.5 μg mL-1). The effect of Dglucose on the read-out signal has been studied to confirm the enzymatic mechanism of this process (LOD 176.21 μM and linear range up to 1.25 mM) and was applied to the detection of glucose in human plasma.

show abstract

Specific bioanalytical optical and photoelectrochemical assays for detection of methanol in alcoholic beverages

Cited by 26 publications

References 52 publications

Optical Sensors Based on II-VI Quantum Dots

Optical Sensors Based on II-VI Quantum Dots

Quantification of adulterants in mezcal by means of FT-MIR and FT-NIR spectroscopy coupled to multivariate analysis

Facile Synthesis and Characterization of Ag/Ag₂S Nanoparticles Enzymatically Grown In Situ and their Application to the Colorimetric Detection of Glucose Oxidase

Contact Info

Product

Resources

About

Specific bioanalytical optical and photoelectrochemical assays for detection of methanol in alcoholic beverages

Cited by 26 publications

References 52 publications

Optical Sensors Based on II-VI Quantum Dots

Optical Sensors Based on II-VI Quantum Dots

Quantification of adulterants in mezcal by means of FT-MIR and FT-NIR spectroscopy coupled to multivariate analysis

Facile Synthesis and Characterization of Ag/Ag2S Nanoparticles Enzymatically Grown In Situ and their Application to the Colorimetric Detection of Glucose Oxidase

Contact Info

Product

Resources

About

Facile Synthesis and Characterization of Ag/Ag₂S Nanoparticles Enzymatically Grown In Situ and their Application to the Colorimetric Detection of Glucose Oxidase