Τίτλος:
Rapid detection of vanillin in alcoholic beverages using stabilized polymerized lipid film based biosensors
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
This work reports a technique for the rapid detection of vanillin in alcoholic beverages using stabilized lipid membrane based biosensors. Microporous filters composed of glass fibers (nominal pore sizes 0.7 and 1.0 μm) were used as supports for the polymerization of the lipid film and stabilization of these devices. The lipid film is formed on the filter by polymerization prior its use. Methacrylic acid was the functional monomer, ethylene glycol dimethacrylate was the crosslinker and 2,2′-azobis-(2-methylpropionitrile) was the initiator. The response towards vanillin of the present stabilized lipid membrane biosensors composed of phosphatidylcholine was investigated. The stabilized lipid membranes provided artificial ion gating events in the form of transient signals and can be used again after storage in air. This has allowed the practical use of the technique for chemical sensing based on lipid film for the rapid detection of vanillin in wines and alcoholic beverages.
Συγγραφείς:
Nikolelis, D.P.
Theoharis, G.
Περιοδικό:
Electroanalysis
Λέξεις-κλειδιά:
acrylic acid methyl ester; lipid; polymer; vanillin, alcoholic beverage; article; biosensor; cross linking; film; filter; ion transport; lipid membrane; polymerization; wine
DOI:
10.1002/elan.200290008
