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Turku, Finland

Siivonen J.J.,Aqsens Inc. | Vaisanen P.I.,Aqsens Inc. | Tiittanen S.A.,Aqsens Inc. | Lehmusto M.M.,Aqsens Inc. | And 8 more authors.
Australian Journal of Grape and Wine Research

Background and Aims: A novel, rapid and simple liquid fingerprinting technology is described and demonstrated for wine identification and for quality control. Method and Results: The wine sample, selected chemical modulators on the surfaces of an array, and a long lifetime luminescent europium label interact non-specifically providing a unique luminescence fingerprint that is highly wine specific. The technique was applied to 15 red wines of different vintages from four European vineyards. The fingerprint data, in addition to identification and after data processing, show a significant correlation with the results from existing Fourier transform infrared spectroscopic and spectrophotometric methods of wine analysis. Conclusions: Identification of individual wines through specific luminescent fingerprints provides a simple and efficient tool to combat wine adulteration and fraud. The same principles combined with proper data processing can enable the monitoring of other parameters such as wine aging. Significance of the Study: This study demonstrates a fast, affordable and rapid test platform for red wine analysis. © 2014 Aqsens Oy. Source

Hanninen P.E.,University of Turku | Siivonen J.J.,Aqsens Inc. | Vaisanen P.I.,Aqsens Inc. | Tiittanen S.A.,Aqsens Inc. | And 7 more authors.
Journal of the American Chemical Society

Complex or unknown liquid analysis requires extensive instrumentation and laboratory work; simple field devices usually have serious limitations in functionality, sensitivity, and applicability. This communication presents a novel, effective, and simple approach to fingerprinting liquids. The method is based on nonspecific interactions of the sample liquid, a long lifetime luminescent europium label, and various surface modulators in an array form that is readily converted to a field analysis μTAS system. As compared to existing e-nose or e-tongue techniques, the method is unique both in terms of sensitivity and usability, mainly due to the well-known unique properties of the europium label. This communication demonstrates the use of this new method in distinguishing different wines, waters, alcohols, and artificially modified berry juices. © 2013 American Chemical Society. Source

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