期刊
MONATSHEFTE FUR CHEMIE
卷 140, 期 8, 页码 947-952出版社
SPRINGER WIEN
DOI: 10.1007/s00706-009-0141-7
关键词
E-nose; Quartz crystal microbalance (QCM); Molecular imprinting; Terpenes; Online monitoring
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.
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