{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T15:36:48Z","timestamp":1762184208154,"version":"build-2065373602"},"reference-count":41,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2014,5,6]],"date-time":"2014-05-06T00:00:00Z","timestamp":1399334400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Food Science"],"published-print":{"date-parts":[[2014,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    The objectives of this study were to determine if Fourier transform infrared (FT\u2010IR) spectroscopy and multivariate statistical analysis (chemometrics) could be used to rapidly differentiate epidemic clones (ECs) of\n                    <jats:italic>Listeria monocytogenes<\/jats:italic>\n                    , as well as their intact compared with heat\u2010killed populations. FT\u2010IR spectra were collected from dried thin smears on infrared slides prepared from aliquots of 10 \u03bcL of each\n                    <jats:italic>L. monocytogenes<\/jats:italic>\n                    ECs (ECIII: J1\u2010101 and R2\u2010499; ECIV: J1\u2010129 and J1\u2010220), and also from intact and heat\u2010killed cell populations of each EC strain using 250 scans at a resolution of 4 cm\n                    <jats:sup>\u22121<\/jats:sup>\n                    in the mid\u2010infrared region in a reflectance mode. Chemometric analysis of spectra involved the application of the multivariate discriminant method for canonical variate analysis (CVA) and linear discriminant analysis (LDA). CVA of the spectra in the wavelength region 4000 to 600 cm\n                    <jats:sup>\u22121<\/jats:sup>\n                    separated the EC strains while LDA resulted in a 100% accurate classification of all spectra in the data set. Further, CVA separated intact and heat\u2010killed cells of each EC strain and there was 100% accuracy in the classification of all spectra when LDA was applied. FT\u2010IR spectral wavenumbers 1650 to 1390 cm\n                    <jats:sup>\u22121<\/jats:sup>\n                    were used to separate heat\u2010killed and intact populations of\n                    <jats:italic>L. monocytogenes<\/jats:italic>\n                    . The FT\u2010IR spectroscopy method allowed discrimination between strains that belong to the same EC. FT\u2010IR is a highly discriminatory and reproducible method that can be used for the rapid subtyping of\n                    <jats:italic>L. monocytogenes<\/jats:italic>\n                    , as well as for the detection of live compared with dead populations of the organism.\n                  <\/jats:p>","DOI":"10.1111\/1750-3841.12475","type":"journal-article","created":{"date-parts":[[2014,5,6]],"date-time":"2014-05-06T22:09:35Z","timestamp":1399414175000},"source":"Crossref","is-referenced-by-count":14,"title":["Rapid Differentiation of\n                    <i>Listeria monocytogenes<\/i>\n                    Epidemic Clones III and IV and Their Intact Compared with Heat\u2010Killed Populations Using Fourier Transform Infrared Spectroscopy and Chemometrics"],"prefix":"10.1111","volume":"79","author":[{"given":"Esmond B.","family":"Nyarko","sequence":"first","affiliation":[{"name":"Dept. of Nutrition and Food Sciences Univ. of Vermont  109 Carrigan Drive, 254 Carrigan Wing 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