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Conference papers

Detection of organoleptic faults in wine by microwave sensor coupled with molecularly imprinted silica

Abstract : This paper presents a microwave liquid sensor enabling an accurate quantification of chemical species at trace levels in complex liquid. Previously, dedicated to pesticide detection (ng/L), this work is devoted to organoleptic faults in wine production. Based on microstrip technology, the shape of the microwave sensor is a trapezoidal spiral. The sensor pattern is a multiresonant microstrip circuit. Each molecularly imprinted silica (MIS) is specifically synthesized to detect a marker of wine defect. Here, two markers of oxidation in white wine are tested. The first marker is the phenylacetaldehyde which triggers a mixed flavor of age, honey and overblown rose (<20 μg/L in wine). The second marker is 1-octen-3-one which mushroom and earthy off-flavors (< 100 ng/L in wine). The coupling between the circuit and the MIS demonstrates how the sensor can detect these chemical species in a common concentration range in French wine.
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Submitted on : Thursday, February 17, 2022 - 11:59:48 AM
Last modification on : Friday, May 20, 2022 - 9:06:42 AM

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Jerome Rossignol, Elias Bou-Maroun, Didier Stuerga, Alexis Lasserre, Régis D. Gougeon, et al.. Detection of organoleptic faults in wine by microwave sensor coupled with molecularly imprinted silica. 2021 IEEE Sensors, Oct 2021, Sydney, Australia. pp.1-4, ⟨10.1109/SENSORS47087.2021.9639784⟩. ⟨hal-03578468⟩

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