Mid-infrared spectroscopic detection of sunflower oil adulteration with safflower oil
| Autor: | O. Uncu, B. Ozen, F. Tokatli |
|---|---|
| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Grasas y Aceites, Vol 70, Iss 1, Pp e290-e290 (2019) |
| Druh dokumentu: | article |
| ISSN: | 0017-3495 1988-4214 |
| DOI: | 10.3989/gya.0579181 |
| Popis: | The oil industry is in need of rapid analysis techniques to differentiate mixtures of safflower-sunflower oils from pure oils. The current adulteration detection methods are generally cumbersome and detection limits are questionable. The aim of this study was to test the capability of a mid-infrared spectroscopic method to detect the adulteration of sunflower oil with safflower oil compared to fatty acid analysis. Mid-infrared spectra of pure oils and their mixtures at the 10–60% range were obtained at 4000–650 cm-1 wavenumber and fatty acid profiles were determined. Data were analyzed by multivariate statistical analysis techniques. The lowest level of detection was obtained with mid-infrared spectroscopy at 30% while the fatty acid profile could determine adulteration at around 60%. Adulteration levels were predicted successfully using PLS regression analysis of infrared data with R2 (calibration) = 0.96 and R2 (validation) = 0.93. As a rapid and minimum waste generating technique, mid-infrared spectroscopy could be a useful tool for the screening of raw material to detect safflower-sunflower oil mixtures. |
| Databáze: | Directory of Open Access Journals |
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