Advanced detection methods for traceability of origin and authenticity of olive oils

2015 ◽  
Vol 7 (14) ◽  
pp. 5731-5739 ◽  
Author(s):  
Gaozhi Ou ◽  
Rui Hu ◽  
Liangxiao Zhang ◽  
Peiwu Li ◽  
Xinjian Luo ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Olive Oil ◽  
Optical Sensing ◽  
Detection Methods ◽  
Olive Oils ◽  
Nuclear Magnetic

This review focuses on the advances in the sensing and identification of adulteration of olive oil, including optical sensing, chromatography, nuclear magnetic resonance, and DNA-based methods.

scholarly journals Determination of the 1,3- and 2-Positional Distribution of Fatty Acids in Olive Oil Triacylglycerols by 13C Nuclear Magnetic Resonance Spectroscopy

2006 ◽  
Vol 89 (4) ◽  
pp. 1071-1076 ◽  
Author(s):  
Giovanna Vlahov
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fatty Acid ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Olive Oil ◽  
Distribution Pattern ◽  
Random Distribution ◽  
Linear Models ◽  
13C Nuclear Magnetic Resonance ◽  
Nuclear Magnetic

Abstract Linear models were selected from a large data set acquired for Italian olive oil samples by quantitative 13C nuclear magnetic resonance (NMR) spectroscopy with distortionless enhancement by polarization transfer (DEPT). The models were used to determine the composition of the 2 fatty acid pools esterifying the 1,3- and 2-positions of triacylglycerols. The linear models selected proved that the 1,3- and 2-distribution of saturated, oleate, and linoleate chains in olive oil triacylglycerols deviated from the random distribution pattern to an extent that depended on the concentration of the fatty acid in the whole triacylglycerol. To calculate the fatty acid composition of the 1,3- and 2-positions of olive oil triacylglycerols, the equations of the selected linear models were applied to the fatty acid percentages determined by gas chromatography. These data were compared with the values predicted by the computer method (used to determine the theoretical amounts of triacylglycerols), which is based on the 1,3-random-2-random theory of the fatty acid distribution in triacylglycerols. The biggest differences were found in the linoleate chain, which is the chain that deviated the most from a random distribution pattern. The results confirmed that the 1,3-random-2-random distribution theory provides an approximate method for determining the structure of triacylglycerols; however, the linear models calculated by the direct method that applies 13C NMR spectroscopy represent a more precise measurement of the composition of the 2 fatty acid pools esterifying the 1,3- and 2-positions of triacylglycerols.

Characterization of italian olive oils based on analytical and nuclear magnetic resonance determinations

2000 ◽  
Vol 77 (6) ◽  
pp. 619-625 ◽  
Author(s):  
Antonio Sacco ◽  
Maria Antonietta Brescia ◽  
Vitantonio Liuzzi ◽  
Fabiano Reniero ◽  
Glaude Guillou ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Olive Oils ◽  
Nuclear Magnetic

A nuclear magnetic resonance (1H and13C) and isotope ratio mass spectrometry (δ13C,δ2H andδ18O) study of Andalusian olive oils

2010 ◽  
Vol 24 (10) ◽  
pp. 1457-1466 ◽  
Author(s):  
María A. Aramendía ◽  
Alberto Marinas ◽  
José M Marinas ◽  
Elena Sánchez ◽  
Francisco J. Urbano ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Isotope Ratio ◽  
Isotope Ratio Mass Spectrometry ◽  
Olive Oils ◽  
Nuclear Magnetic

Nuclear magnetic resonance study of flavoured olive oils

2012 ◽  
Vol 27 (3) ◽  
pp. 250-259 ◽  
Author(s):  
Luisa Mannina ◽  
Marco D'Imperio ◽  
Marco Gobbino ◽  
Irene D'Amico ◽  
Antonio Casini ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Nuclear Magnetic Resonance Study ◽  
Magnetic Resonance Study ◽  
Olive Oils ◽  
Nuclear Magnetic
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