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Holland, James K., Kemsley, E. Katherine 
ORCID: https://orcid.org/0000-0003-0669-3883 and Wilson, Reginald H.
(1997)
Transfer of spectral data between Fourier-transform infrared spectrometers for use in discriminant analysis of fruit purees.
Journal of the Science of Food and Agriculture, 75 (3).
pp. 391-400.
ISSN 0022-5142
Abstract
The mid-infrared spectra of raspberry and strawberry purées were acquired on two Fourier-transform spectrometers. A pre-treatment procedure, involving baseline correction and area normalisation, was developed that made the spectra from the two spectrometers compatible for use in discriminant analyses. The discriminant analyses were performed by subjecting the spectra to a principal component (PC) analysis, grouping them according to fruit species and then assigning samples to the class with the closest group mean in PC space. Models using the first PC scores of the pre-treated spectra from one spectrometer were able to correctly assign the fruit species of between 91·1 and 96·4% of the pre-treated spectra of independent test sets of the other. However, the projection of the spectra from each spectrometer into the same PC space showed differences in the mean positions of equivalent groups along the second and higher PCs. Therefore, the transfer of this data set is only wholly reliable using the first PC scores. Tests with the uncorrected spectra demonstrated their incompatibility through the complete lack of overlap of equivalent fruit species groups in PC space. ©1997 SCI
| Item Type: | Article |
|---|---|
| Faculty \ School: | Faculty of Science > School of Chemistry |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 06 Feb 2023 10:31 |
| Last Modified: | 07 Feb 2023 09:31 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/91002 |
| DOI: | 10.1002/(SICI)1097-0010(199711)75:3<391::AID-JSFA894>3.0.CO;2-7 |
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