The use of IRMS, 1H NMR and chemical analysis to characterise Italian and imported Tunisian olive oils

被引：58

作者：

Camin, Federica ^{[1
]}

Pavone, Anita ^{[2
]}

Bontempo, Luana ^{[1
]}

Wehrens, Ron ^{[1
]}

Paolini, Mauro ^{[1
]}

Faberi, Angelo ^{[4
,5
]}

Marianella, Rosa Maria ^{[4
,5
]}

Capitani, Donatella ^{[2
]}

Vista, Silvia ^{[3
]}

Mannina, Luisa ^{[2
]}

机构：

[1] FEM, I-38010 San Michele All Adige, Italy

[2] CNR, Ist Metodol Chim, Lab Risonanza Magnet Annalaura Segre, I-00015 Monterotondo, Italy

[3] Univ Roma La Sapienza, Dipartimento Chim & Tecnol Farm, I-00185 Rome, Italy

[4] Minist Polit Agr Alimentari & Forestali, ICQRF DG PREF Ufficio PREF V, I-00149 Rome, Italy

[5] Lab Cent Roma, I-00149 Rome, Italy

来源：

FOOD CHEMISTRY | 2016年 / 196卷

关键词：

Olive oil; Geographical origin; Quality; Metabolite profiling; Stable isotope ratios of C; H and O; RATIO MASS-SPECTROMETRY; STABLE-ISOTOPE-RATIO; O-18; MEASUREMENT; NMR; ORIGIN; C-13; H-1; BIOSYNTHESIS; ADULTERATION; AUTHENTICITY;

D O I：

10.1016/j.foodchem.2015.08.132

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Isotope Ratio Mass Spectrometry (IRMS), H-1 Nuclear Magnetic Resonance (H-1 NMR), conventional chemical analysis and chemometric elaboration were used to assess quality and to define and confirm the geographical origin of 177 Italian PDO (Protected Denomination of Origin) olive oils and 86 samples imported from Tunisia. Italian olive oils were richer in squalene and unsaturated fatty acids, whereas Tunisian olive oils showed higher delta O-18, delta H-2, linoleic acid, saturated fatty acids beta-sitosterol, sn-1 and 3 diglyceride values. Furthermore, all the Tunisian samples imported were of poor quality, with a K-232 and/or acidity values above the limits established for extra virgin olive oils. By combining isotopic composition with H-1 NMR data using a multivariate statistical approach, a statistical model able to discriminate olive oil from Italy and those imported from Tunisia was obtained, with an optimal differentiation ability arriving at around 98%. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：98 / 105

页数：8

共 43 条

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