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| Content Provider | Springer Nature Link |
|---|---|
| Author | Li, Hui Voort, F. R. Ismail, A. A. Sedman, J. Cox, R. Simard, C. Buijs, H. |
| Copyright Year | 2000 |
| Abstract | This work demonstrates the application of partial least squares (PLS) analysis as a discriminant as well as a quantitative tool in the analysis of edible fats and oils by Fourier transform near-infrared (FT-NIR) spectroscopy. Edible fats and oils provided by a processor were used to calibrate a FT-NIR spectrometer to discriminate between four oil formulations and to determine iodine value (IV). Samples were premelted and analyzed in gass vials maintained at 75°C to ensure that the samples remained liquid. PLS calibrations for the prediction of IV were derived for each oil type by using a subset of the samples provided as the PLS training set. For each oil formulation (type), discrimination criteria were established based on the IV range, spectral residual, and PLS factor scores output from the PLS calibration model. It was found that all four oil types could be clearly differentiated from each other, and all the validation samples, including a set of blind validation samples provided by the processor, were correctly classified. The PLS-predicted IV for the validation samples were in good agreement with the gas chromatography IV values provided by the processor. Comparable predictive accuracy was obtained from a calibration derived by combining samples of all four oil types in the training set as well as a global IV calibration supplied by the instrument manufacturer. The results of this study demonstrate that by combining the rapid and convenient analytical capabilties of FT-NIR spectroscopy with the discriminant and predictive power of PLS, one can both identify oil type, as well as predict IV with a high degree of confidence. These combined capabilities provide processors with better control over their process. |
| Starting Page | 29 |
| Ending Page | 36 |
| Page Count | 8 |
| File Format | |
| ISSN | 0003021X |
| Journal | Journal of the American Oil Chemists' Society |
| Volume Number | 77 |
| Issue Number | 1 |
| e-ISSN | 15589331 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2000-01-01 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discriminant analysis fats and oils Fourier transform near-infrared spectroscopy iodine value partial least squares quality control Chemistry/Food Science Analytical Chemistry Biotechnology Industrial Chemistry/Chemical Engineering Biomaterials Agriculture |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Chemical Engineering |
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