Journal ArticleDOI
1H and 13C NMR of virgin olive oil. An overview
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TLDR
The authentication and quality assessment of virgin olive oil were performed using high-resolution 1H and 13C NMR spectroscopy as mentioned in this paper, with emphasis on the detection of adulteration with foreign (seed) oils and esterified or refined olive and olive-pomace oils.Abstract:
The authentication and quality assessment of virgin olive oil were performed using high-resolution 1H and 13C NMR spectroscopy. An overview of the various determinations currently assessed is presented with emphasis on the detection of adulteration with foreign (seed) oils and esterified or refined olive and olive-pomace oils. Recent results on the NMR analysis of natural compounds (diacylglycerols, free fatty acids, aldehydes, polyphenols, etc.) related to the quality-freshness of virgin olive oil are also reported. The possible contribution of high-resolution NMR to the authentication of geographical origin of virgin olive oil is discussed. © 1997 John Wiley & Sons, Ltd.read more
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Journal ArticleDOI
Phenolic molecules in virgin olive oils: a survey of their sensory properties, health effects, antioxidant activity and analytical methods. An overview of the last decade.
Alessandra Bendini,Lorenzo Cerretani,Alegría Carrasco-Pancorbo,Ana María Gómez-Caravaca,Antonio Segura-Carretero,Alberto Fernández-Gutiérrez,Giovanni Lercker +6 more
TL;DR: A survey on phenolic compounds of virgin olive oils bearing in mind their chemical-analytical, healthy and sensory aspects is realized, starting from the basic studies, the results of researches developed in the last ten years will be focused.
Journal ArticleDOI
In vivo characterization of the liver fat 1H MR spectrum
Gavin Hamilton,Takeshi Yokoo,Mark Bydder,Irene Cruite,Michael E. Schroeder,Claude B. Sirlin,Michael S. Middleton +6 more
TL;DR: The triglyceride model can characterize human liver fat spectra, which allows more accurate determination of liver fat fraction from MRI and MRS, and agreed closely with spectroscopic measurement.
Journal ArticleDOI
Classification of edible oils by employing 31P and 1H NMR spectroscopy in combination with multivariate statistical analysis. A proposal for the detection of seed oil adulteration in virgin olive oils.
TL;DR: A combination of (1)H NMR and (31)P NMR spectroscopy and multivariate statistical analysis was used to classify 192 samples from 13 types of vegetable oils, resulting in a significant discrimination among the different classes of oils.
Journal ArticleDOI
Separation and identification of phenolic compounds in olive oil by coupling high-performance liquid chromatography with postcolumn solid-phase extraction to nuclear magnetic resonance spectroscopy (LC-SPE-NMR).
TL;DR: This study reports the first application of the hyphenated LC-SPE-NMR technique using postcolumn solid-phase extraction to the direct analysis of phenolic compounds in the polar part of olive oil.
Journal ArticleDOI
Rapid simultaneous determination by proton NMR of unsaturation and composition of acyl groups in vegetable oils
María D. Guillén,Ainhoa Ruiz +1 more
TL;DR: In this paper, 1H NMR spectra of 66 samples of edible oils from 14 different botanical origins were acquired and the area of the signals of the spectra is proportional to the number of hydrogen atoms of each type in the sample.
References
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