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Identification of seven species of the Lactobacillus acidophilus group by FT–IR spectroscopy
Fourier transform infrared (FT–IR) spectra of 102 strains of the seven species of the Lactobacillus acidophilus group were collected and investigated for their potential use in classification and identification on species level. The database built contains more than 370 spectra. Various procedures o...
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| Published in: | Food science & technology 2006-03, Vol.39 (2), p.152-158 |
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| Language: | English |
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| container_title | Food science & technology |
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| creator | Luginbühl, Werner Jimeno, Juan Zehntner, Ulrich |
| description | Fourier transform infrared (FT–IR) spectra of 102 strains of the seven species of the
Lactobacillus acidophilus group were collected and investigated for their potential use in classification and identification on species level. The database built contains more than 370 spectra. Various procedures of pre-processing and classification methods have been compared with respect to their predictive ability. The most encouraging results were achieved with linear discriminant analysis (LDA) of the absorbance values of normalized spectra at selected wavenumbers. The rate of correct species assignment in cross-validation (Jackknife procedure with one spectrum left out for model building) were 95%, 95%, 69%, 100%, 88%, 100%, and 91% for
L. acidophilus, L. amylovorus,
L. crispatus,
L. gallinarum,
L. gasseri,
L. helveticus, and
L. johnsonii, respectively. Very distinct grouping was found for
L. gallinarum and
L. helveticus, the most difficult differentiation in LDA was between the pairs
L. crispatus/L. amylovorus and
L. gasseri/L. johnsonii. |
| doi_str_mv | 10.1016/j.lwt.2004.12.009 |
| format | article |
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Lactobacillus acidophilus group were collected and investigated for their potential use in classification and identification on species level. The database built contains more than 370 spectra. Various procedures of pre-processing and classification methods have been compared with respect to their predictive ability. The most encouraging results were achieved with linear discriminant analysis (LDA) of the absorbance values of normalized spectra at selected wavenumbers. The rate of correct species assignment in cross-validation (Jackknife procedure with one spectrum left out for model building) were 95%, 95%, 69%, 100%, 88%, 100%, and 91% for
L. acidophilus, L. amylovorus,
L. crispatus,
L. gallinarum,
L. gasseri,
L. helveticus, and
L. johnsonii, respectively. Very distinct grouping was found for
L. gallinarum and
L. helveticus, the most difficult differentiation in LDA was between the pairs
L. crispatus/L. amylovorus and
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L. acidophilus, L. amylovorus,
L. crispatus,
L. gallinarum,
L. gasseri,
L. helveticus, and
L. johnsonii, respectively. Very distinct grouping was found for
L. gallinarum and
L. helveticus, the most difficult differentiation in LDA was between the pairs
L. crispatus/L. amylovorus and
L. gasseri/L. johnsonii.</description><subject>Chemometrics</subject><subject>Classification</subject><subject>Identification</subject><subject>Infrared spectroscopy</subject><subject>Lactobacillus acidophilus</subject><subject>Lactobacillus acidophilus group</subject><issn>0023-6438</issn><issn>1096-1127</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNp9kE1OwzAQhS0EEqVwAHZZsUuwncR2xApV_FSqhITKFsv1D3WVxsF2irrjDtyQk-BQ1szmjUbzRvM-AC4RLBBE5HpTtB-xwBBWBcIFhM0RmCDYkBwhTI_BBEJc5qQq2Sk4C2EDU1WYTcDrXOkuWmOliNZ1mTNZ0DvdZaHX0uowDuJaZwsho1sJadt2CFlS5fq1Hfs374Y-W-2z--X359f8-dcZvQvS9ftzcGJEG_TFn07By_3dcvaYL54e5rPbRS5LzGK-agyTRFAIa2wUFYIqQUrGWEWYrAxWkjUlo0RiSpnUDVNGIopMrWpRixRtCq4Od3vv3gcdIt_aIHXbik67IXDUNKTGZZUW0WFRpg-D14b33m6F33ME-UiSb3giyUeSHGGeSCbPzcGjU4Kd1Z6HhKaTWlmfonLl7D_uHw9BfiY</recordid><startdate>200603</startdate><enddate>200603</enddate><creator>Luginbühl, Werner</creator><creator>Jimeno, Juan</creator><creator>Zehntner, Ulrich</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>7T7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope></search><sort><creationdate>200603</creationdate><title>Identification of seven species of the Lactobacillus acidophilus group by FT–IR spectroscopy</title><author>Luginbühl, Werner ; Jimeno, Juan ; Zehntner, Ulrich</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c328t-b9f8c6a70052fd7aa7da63888468c4f2dc893876c2778ce98dfc171f5d5a5a023</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Chemometrics</topic><topic>Classification</topic><topic>Identification</topic><topic>Infrared spectroscopy</topic><topic>Lactobacillus acidophilus</topic><topic>Lactobacillus acidophilus group</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Luginbühl, Werner</creatorcontrib><creatorcontrib>Jimeno, Juan</creatorcontrib><creatorcontrib>Zehntner, Ulrich</creatorcontrib><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Food science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Luginbühl, Werner</au><au>Jimeno, Juan</au><au>Zehntner, Ulrich</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Identification of seven species of the Lactobacillus acidophilus group by FT–IR spectroscopy</atitle><jtitle>Food science & technology</jtitle><date>2006-03</date><risdate>2006</risdate><volume>39</volume><issue>2</issue><spage>152</spage><epage>158</epage><pages>152-158</pages><issn>0023-6438</issn><eissn>1096-1127</eissn><abstract>Fourier transform infrared (FT–IR) spectra of 102 strains of the seven species of the
Lactobacillus acidophilus group were collected and investigated for their potential use in classification and identification on species level. The database built contains more than 370 spectra. Various procedures of pre-processing and classification methods have been compared with respect to their predictive ability. The most encouraging results were achieved with linear discriminant analysis (LDA) of the absorbance values of normalized spectra at selected wavenumbers. The rate of correct species assignment in cross-validation (Jackknife procedure with one spectrum left out for model building) were 95%, 95%, 69%, 100%, 88%, 100%, and 91% for
L. acidophilus, L. amylovorus,
L. crispatus,
L. gallinarum,
L. gasseri,
L. helveticus, and
L. johnsonii, respectively. Very distinct grouping was found for
L. gallinarum and
L. helveticus, the most difficult differentiation in LDA was between the pairs
L. crispatus/L. amylovorus and
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| ispartof | Food science & technology, 2006-03, Vol.39 (2), p.152-158 |
| issn | 0023-6438 1096-1127 |
| language | eng |
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| source | Elsevier |
| subjects | Chemometrics Classification Identification Infrared spectroscopy Lactobacillus acidophilus Lactobacillus acidophilus group |
| title | Identification of seven species of the Lactobacillus acidophilus group by FT–IR spectroscopy |
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