1H Nuclear Magnetic Resonance Study of Olive Oils Commercially Available as Italian Products in the United States of America

Coco, Laura Del; Schena, Francesco Paolo; Fanizzi, Francesco Paolo

doi:10.3390/nu4050343

Cited by 41 publications

(25 citation statements)

References 18 publications

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“…As recently reported by Mannina et al, the signal for one of the 13 C satellites of methyl group belonging to oleic fatty chain appeared in the same region of the linolenic acid triplet, when NMR experiments were performed at high magnetic field (500 MHz) [18]. The correct integral measurement of the linolenic acid triplet was calculated by subtracting the integral of the upfield symmetric oleic 13 C satellite [19].…”

Section: Characterization Of Esterified Fatty Acids By 1 H Nmr Analysismentioning

confidence: 73%

NMR‐based metabolomic approach for EVOO from secular olive trees of Apulia region

Coco

Perri²,

Cesari

et al. 2013

Euro J Lipid Sci & Tech

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In this work, a first level investigation was carried out to study the extra virgin olive oils (EVOOs) obtained from secular olive trees of Apulia region. Microextracted olive oil samples from selected and genetically characterized olive trees were studied by 1H NMR‐based metabolomic approach and multivariate analysis, according to cultivar and geographic origin, within the Apulia region. The 1H NMR spectra of oils were analyzed by several pattern recognition methods, using both unsupervised (principal component analysis) and supervised (partial least squares discriminant analysis, orthogonal partial least squares discriminant analysis (OPLS‐DA)) statistical techniques. EVOOs obtained from secular olive trees could be easily differentiated by OPLS‐DA not only depending on the used cultivars but also according to their geographical origin within the different districts of the Apulia region, such to justify a larger biodiversity maintenance of Apulia secular germplasm. Therefore, differences in chemical composition and NMR profiles of EVOOs may be explained either by cultivars or geographic areas. Practical applications: About 10% of the genetic olive tree patrimony within the Apulia region consists of the secular olive trees. A recently introduced regional law (No 14 of June 4th, 2007) allows to exploit oil produced from secular olive trees by labeling it with the special mention: “extra virgin oil from the Apulia secular olive trees”. Characterization of extra virgin olive oils obtained from secular trees may be an optimal solution to increase the value for this product and make it available on the market. On the other hand this economic issue is very important to preserve the unique landscape offered by the ancient olive groves of the Apulia region in south east Italy.

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Section: Characterization Of Esterified Fatty Acids By 1 H Nmr Analysismentioning

confidence: 73%

NMR‐based metabolomic approach for EVOO from secular olive trees of Apulia region

Coco

Perri²,

Cesari

et al. 2013

Euro J Lipid Sci & Tech

Self Cite

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“…The main advantage of NMR is that it does not require complicated sample preparation and the determination of very different chemical species can be performed in a single experiment. Multivariate analysis such as principal component analysis (PCA) allowed a good discrimination and gave some affinity indications for the US market olive oils in comparison with other single cultivars of extra virgin olive oils, such as Coratina (Italy), Picual (Spain), Kalamata (Greece) and Sfx (Tunisia) . Also, a less expensive variety from Greece or Turkey can be substituted in place of olive oil from Italy as claimed on the label.…”

Section: Authentication and Adulteration By Food Categorymentioning

confidence: 99%

Modern analytical methods for the detection of food fraud and adulteration by food category

et al. 2017

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This review provides current information on the analytical methods used to identify food adulteration in the six most adulterated food categories: animal origin and seafood, oils and fats, beverages, spices and sweet foods (e.g. honey), grain-based food, and others (organic food and dietary supplements). The analytical techniques (both conventional and emerging) used to identify adulteration in these six food categories involve sensory, physicochemical, DNA-based, chromatographic and spectroscopic methods, and have been combined with chemometrics, making these techniques more convenient and effective for the analysis of a broad variety of food products. Despite recent advances, the need remains for suitably sensitive and widely applicable methodologies that encompass all the various aspects of food adulteration. © 2017 Society of Chemical Industry.

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“…Spectroscopy‐based metabolomics has been largely used for the assessment of olive oil authenticity, especially to ascertain the geographical origin . In particular, NMR, FTIR and NIR techniques have been used. The general strategy consists in the detection of major and/or minor olive oil metabolites from a large number of oil samples, and subsequent multivariate statistical analysis of the data .…”

Section: Olive ‘Omics’mentioning

confidence: 99%

Evolution and perspectives of cultivar identification and traceability from tree to oil and table olives by means of DNA markers

et al. 2016

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In recent years, an increasing number of typicality marks has been awarded to high-quality olive oils produced from local cultivars. In this case, quality control requires effective varietal checks of the starting materials. Moreover, accurate cultivar identification is essential in vegetative-propagated plants distributed by nurseries and is a pre-requisite to register new cultivars. Food genomics provides many tools for cultivar identification and traceability from tree to oil and table olives. The results of the application of different classes of DNA markers to olive with the purpose of checking cultivar identity and variability of plant material are extensively discussed in this review, with special regard to repeatability issues and polymorphism degree. The characterization of olive germplasm from all countries of the Mediterranean basin and from less studied geographical areas is described and innovative high-throughput molecular tools to manage reference collections are reviewed. Then the transferability of DNA markers to processed products - virgin olive oils and table olives - is overviewed to point out strengths and weaknesses, with special regard to (i) the influence of processing steps and storage time on the quantity and quality of residual DNA, (ii) recent advances to overcome the bottleneck of DNA extraction from processed products, (iii) factors affecting whole comparability of DNA profiles between fresh plant materials and end-products, (iv) drawbacks in the analysis of multi-cultivar versus single-cultivar end-products and (v) the potential of quantitative polymerase chain reaction (PCR)-based techniques. © 2016 Society of Chemical Industry.

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1H Nuclear Magnetic Resonance Study of Olive Oils Commercially Available as Italian Products in the United States of America

Cited by 41 publications

References 18 publications

NMR‐based metabolomic approach for EVOO from secular olive trees of Apulia region

NMR‐based metabolomic approach for EVOO from secular olive trees of Apulia region

Modern analytical methods for the detection of food fraud and adulteration by food category

Evolution and perspectives of cultivar identification and traceability from tree to oil and table olives by means of DNA markers

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