Fast screening of turkish olive oil by NMR spectroscopy for geographical determination and discrimination purposes
Autor(en): | Ok, S. | Stichwörter: | CHEMICAL CHARACTERISTICS; Chemistry; Chemistry, Applied; DOSY; Food Science & Technology; Geographical origin; H-1 DOSY NMR; H-1 NMR quantitative analysis; NUCLEAR-MAGNETIC-RESONANCE; Olive oil; PROFILE; Sub-fraction determination; VARIETIES | Erscheinungsdatum: | 2014 | Herausgeber: | CONSEJO SUPERIOR INVESTIGACIONES CIENTIFICAS-CSIC | Journal: | GRASAS Y ACEITES | Volumen: | 65 | Ausgabe: | 2 | Zusammenfassung: | The main goal of this study is to rapidly screen olive oil contents by acquiring one dimensional (1D) H-1 NMR spectra of 38 samples from Turkey, The Middle East, and Libya. The quantitative analysis of the H-1 NMR helped in distinguishing the geographical origin of the olive oil samples. The intensity of H-1 NMR variables was submitted to the statistical method, analysis of variance (ANOVA). As a result of combining the NMR data and ANOVA, olive oils were discriminated based on regional origin rather than province. This less time consuming discriminative screening by H-1 NMR does not require any further analysis of the olive oil, including oxidative stability measurements or gas chromatography. The possibility of determining authenticity, even in an olive growing area of a small village was also shown. The two-dimensional (2D) non-invasive H-1 DOSY NMR experiment, known as ``NMR chromatography'', was used to determine the olive oil sub-fraction. |
ISSN: | 00173495 | DOI: | 10.3989/gya.122413 |
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