Formation of Oxygenated alpha,beta-Unsaturated Aldehydes and other toxic compounds in Sunflower Oil Oxidation at Room Temperature in Closed Receptacles.
The study of the volatile components present in the headspace of twenty seven sunflower oil samples, stored over different periods of time, at room temperature in closed receptacles, in presence of limited amounts of air, has been carried out by solid phase microextraction (SPME) followed by gas chr...
| Autores: | , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2008 |
| País: | España |
| Recursos: | Universidad del País Vasco |
| Repositório: | Addi. Archivo Digital para la Docencia y la Investigación |
| OAI Identifier: | oai:addi.ehu.eus:10810/72350 |
| Acesso em linha: | http://hdl.handle.net/10810/72350 |
| Access Level: | Acceso aberto |
| Palavra-chave: | gas chromatography/mass spectrometry (GC/MS) 4-hydroxy-2-nonenal (HNE) oxidation oxygenated alpha,beta-unsaturated aldehydes polycyclic aromatic hydrocarbons (PAHs) solid phase microextraction (SPME) sunflower oil |
| Resumo: | The study of the volatile components present in the headspace of twenty seven sunflower oil samples, stored over different periods of time, at room temperature in closed receptacles, in presence of limited amounts of air, has been carried out by solid phase microextraction (SPME) followed by gas chromatography/mass spectrometry (GC/MS). The composition of the headspace of the studied samples is highly varied, ranging from the characteristic of non-oxidized oils to that of oils with a high oxidation level. Among the detected compounds are alkanals, (E)-2-alkenals, 2,4-alkadienals, ketones, acids, esters, alcohols, as well as aliphatic and aromatic hydrocarbons. In samples having a certain oxidation degree it is worth noting the presence of a significant number of genotoxic and cytotoxic oxygenated alpha,beta-unsaturated aldehydes, such as 4-hydroxy-2-nonenal, 4-oxo-2-nonenal or 4,5-epoxy-2-decenal, which have been considered responsible for various degenerative diseases which are widespread nowadays; some of these compounds are described in this manuscript for the first time as coming from edible oil oxidation at room temperature. In addition, it has been found the occurrence of polycyclic aromatic hydrocarbons (PAHs) in concentrations in line with the oxidation level of the sample. |
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