A fluorescent chemical sensor for ethanol determination in alcoholic beverages

Bozkurt, Serap Seyhan; Merdivan, Erinç; Benibol, Yalim

doi:10.1007/s00604-009-0271-y

Cited by 39 publications

(19 citation statements)

References 17 publications

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“…In the context of quality control of alcoholic beverages a range of different analytical methods are used, such as distillation and picnometry (Tešević et al, 2009), electronic densimetry (Coldea et al, 2011), colorimety ( Joshi and Sandhu, 2000), photometry (Borges Sivanildo et al, 2006), by fluorescent chemical sensor (Bozkurt et al, 2010). The most advanced techniques are the chromatographic ones, either GC-FID, GC-MS or HPLC (Diban et al, 2009;García-Llobodanin et al, 2008;Hernández-Gómez et al, 2005;López-Vázquez et al, 2010;Wang et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Rapid Quantitative Analysis of Ethanol and Prediction of Methanol Content in Traditional Fruit Brandies from Romania, using FTIR Spectroscopy and Chemometrics

Coldea

Socaciu

Fetea

et al. 2013

Not Bot Hort Agrobot Cluj

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Fourier Transform Infrared (FTIR) spectroscopy in combination with chemometrics were applied for the quality control of 26 fruit brandies made by traditional technology in Romania. Firstly, for the identification and quantitative evaluation of methanol and ethanol in such samples, 4 mixtures of methanol and ethanol standard solutions and a spiked sample were fingerprinted in the 1200 - 950 cm-1 FTIR spectral range, identifying specific wavelength of 1020 and 1112 for methanol, 1047 and 1087 for ethanol. Then, the FTIR spectra of all brandy samples in the range 3500 - 750 cm-1 was registered and the methanol and ethanol concentrations were determined according to the previous calibration. By PCA (Principal component analysis) of FTIR areas (1170 -1000 cm-1), the variability and discrimination between samples was possible, discriminating between the biological and geographical origin of brandy samples. Based on peak areas and intensities, it was predicted the concentration of methanol in all samples, using Partial least squares regression (PLS). The correlation between FTIR and the reference method (GC-FID) was well correlated and significant (p<0.05). It was demostrated that FTIR technique offer a good prediction and statistical correlation with GC-FID technique for methanol quantification.

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Section: Introductionmentioning

confidence: 99%

Rapid Quantitative Analysis of Ethanol and Prediction of Methanol Content in Traditional Fruit Brandies from Romania, using FTIR Spectroscopy and Chemometrics

Coldea

Socaciu

Fetea

et al. 2013

Not Bot Hort Agrobot Cluj

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“…In addition to the ultraviolet and visible spectral range, we considered absorption spectroscopy in the near-infrared, since many studies suggested that range for ethanol studies in alcoholic beverages [15][16][17]. We also added fluorescence spectroscopy, which demonstrated to be successful in both ethanol determination and spirit classification [18][19]. By means of these techniques, which were combined to a multivariate data processing, we demonstrated for the first time that it is possible not only to discriminate single malt whiskies from commercial-grade blends, but also to cluster the single malt types according to their production areas.…”

Section: Whisky and Brand Protectionmentioning

confidence: 98%

Optical spectroscopy and pattern recogition techniques for discriminating and classifying Scotch whiskies

Mignani

Ciaccheri

Mencaglia

et al. 2011

2011 IEEE SENSORS Proceedings

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The present study shows how optical spectroscopy can be innovatively used as a rapid and non-destructive tool to differentiate distinctive single malt Scotch whiskies with respect to commercial-grade blends, and for their classification according to the region of production. Absorption and fluorescence spectroscopy were combined with multivariate data analysis so as to build a discriminating map. The map showed that the clusters representing the single malt whiskies from selected distilleries were sharply separated from the cluster grouping the other whiskies of commercial-grade. Moreover, the cluster of single malt whisky was split into two subgroups, representing samples from two main macro-areas, the islands and the highlands, respectively.

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“…However, such methods are time-consuming and require relatively expensive equipment. In contrast, electroanalysis using corresponding biosensors can represent an acceptable alternative to the methods mentioned above as they are not expensive and the sample preparation is simple as well (it should be mentioned that sensors based on the fluorescent probe may also be constructed [6]). Moreover, two advantages are combined in electrochemical sensors, first enzyme specificity and secondly, transfer of the signal of biocatalytic reaction to an electrochemical one (see, e.g., [7][8][9][10]).…”

Section: Introductionmentioning

confidence: 99%

Simple and Rapid Determination of Ethanol Content in Beer Using an Amperometric Biosensor

2015

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An alcohol dehydrogenase-based biosensor was prepared and tested for its use to determine ethanol in beer. The biosensor is based on a screen-printed carbon electrode (SPCE) modified by rhodium dioxide and immobilized with a biocatalytic layer containing the enzyme. Function of the enzyme biosensor was tested in model ethanol samples, in which it showed a linear range of 15-120 g•L −1 with a detection limit of 3.3 g•L −1 (established as 3σ) and response time of 19 s. In a potential window from -0.2 to +0.45 V, interferences of both ascorbic and uric acids were negligible. Several types of marketed beers of Czech provenance were selected and subjected to measurements under optimized conditions but without any pretreatment of real samples. When compared with the reference method (gas chromatography), the results were in quite good agreement for beers of the pale lager type but higher contents of ethanol were indicated in the samples of dark lager beers.

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A fluorescent chemical sensor for ethanol determination in alcoholic beverages

Cited by 39 publications

References 17 publications

Rapid Quantitative Analysis of Ethanol and Prediction of Methanol Content in Traditional Fruit Brandies from Romania, using FTIR Spectroscopy and Chemometrics

Rapid Quantitative Analysis of Ethanol and Prediction of Methanol Content in Traditional Fruit Brandies from Romania, using FTIR Spectroscopy and Chemometrics

Optical spectroscopy and pattern recogition techniques for discriminating and classifying Scotch whiskies

Simple and Rapid Determination of Ethanol Content in Beer Using an Amperometric Biosensor

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