2012
DOI: 10.1021/jf3035918
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Kinetic Study of Olive Oil Degradation Monitored by Fourier Transform Infrared Spectrometry. Application to Oil Characterization

Abstract: A new approach for the determination of kinetic parameters of the cis/trans isomerization during the oxidation process of 24 virgin olive oils belonging to 8 different varieties is presented. The accelerated process of degradation at 100 °C was monitored by recording the Fourier transform infrared spectra. The parameters obtained confirm pseudo-first-order kinetics for the degradation of cis and the appearance of trans double bonds. The kinetic approach affords the induction time and the rate coefficient; thes… Show more

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Cited by 16 publications
(4 citation statements)
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“…As described by Roman Falco (Roman Falco et al ., ), the lipid autoxidation takes place in a constant volume vessel or with the presence of a high oxygen content. The entire reaction rate described in Eq.…”
Section: Methodsmentioning
confidence: 98%
“…As described by Roman Falco (Roman Falco et al ., ), the lipid autoxidation takes place in a constant volume vessel or with the presence of a high oxygen content. The entire reaction rate described in Eq.…”
Section: Methodsmentioning
confidence: 98%
“…Kinetic parameters provide information about lipid oxidation. At moderate temperatures, due to the high concentration of oxygen dissolved in the oil, the lipid is prone to the autoxidation regardless of the oxygen pressure and oxidation rate [16,17,18]. In this study, the effect of temperature on the rate of lipid oxidation was illustrated by means of the Arrhenius equation:ln(k)=lnAEa RT where k is the reaction rate constant or reciprocal oxidation induction time (OIT), A is the pre-exponential factor or frequency factor, E a is the activation energy (kJ mol −1 ), R is the molar gas constant (8.314510 J K −1 mol −1 ), and T is the absolute temperature (K).…”
Section: Methodsmentioning
confidence: 99%
“…Proceeding with the assumption described by Falco et al . (), we used eqns as the model rate equations for the formation and disappearance of HHE/HNE.d[ω3]dt=k1false[normalω3false]d[HHE]dt=k1false[normalω3false]k2false[HHEfalse]d[ω6]dt=k3false[normalω6false], andd[HNE]dt=k3false[normalω6false]k4false[HNEfalse].…”
Section: Methodsmentioning
confidence: 99%