QCM sensor array for monitoring terpene emissions from odoriferous plants |
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Authors: | Peter A Lieberzeit Abdul Rehman Naseer Iqbal Bita Najafi Franz L Dickert |
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Institution: | (1) Department of Analytical Chemistry and Food Chemistry, University of Vienna, Waehringer Strasse 38, 1090 Vienna, Austria |
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Abstract: | Abstract An e-nose comprised of six sensing channels each coated with a molecularly imprinted polymer (MIP) selectively interacting
with alpha-pinene, thymol, estragol, linalool, and camphor, respectively, was designed. When applying it for continuous online
surveillance of terpenes emitted from basil and peppermint leaves as a criterion of freshness, it very appreciably reproduced
the emanation patterns from these plants as shown by GC-MS. Chromatography yielded a variety of terpenes in a concentration
range below 70 ppm. Trend lines obtained from the e-nose were corroborated by GC-MS and also appreciably fit the usual conduct
of these plants as observable by the human nose.
Graphical abstract
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Keywords: | E-nose Quartz crystal microbalance (QCM) Molecular imprinting Terpenes Online monitoring |
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