Influence of time, surface-to-volume ratio, and heating process (continuous or intermittent) on the emission rates of selected carbonyl compounds during thermal oxidation of palm and soybean oils

Journal of Agricultural and Food Chemistry
Thalita Oliveira da Silva, Pedro Afonso de Paula Pereira

Abstract

The aim of this work was to compare the emission rates of selected carbonyl compounds (CC) produced by palm and soybean oils when heated at 180 degrees C in the presence of air, through different time intervals and at different surface-to-volume ratios ( S/ V), in continuous and intermittent processes. The CC were collected and derivatized onto silica C18 cartridges impregnated with an acid 2,4-dinitrophenylhidrazine solution, followed by extraction with acetonitrile and analysis by HPLC-UV and, in some cases, HPLC-MS with electrospray ionization. Among the CC quantified, namely, acetaldehyde, acrolein, propanal, butanal, hexanal, 2-heptenal, and 2-octenal, acrolein was the main emission in both oils and all S/ V ratios, followed by hexanal and 2-heptenal. The soybean oil has presented greater emission rates of acrolein than palm oil. When different S/ V ratios used during the heating process of the oil were compared, the emission rates, in general, were directly related to them, although saturated and nonsaturated CC have had different behaviors toward oxidation reactions. During intermittent heating, there was a trend of increasing emission rates of saturated aldehydes, whereas the opposite was observed with unsaturated aldeh...Continue Reading

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Citations

Jul 4, 2012·Environmental Science & Technology·Thomas M Cahill, Robert A Okamoto
Mar 16, 2011·Journal of Agricultural and Food Chemistry·Alice EwertPeter Schieberle
Nov 28, 2013·Journal of Agricultural and Food Chemistry·Hanjiang ZhuSelina C Wang
Feb 6, 2016·Journal of the American Oil Chemists' Society·Jakub P KobylińskiAleksandra Szydłowska-Czerniak
Jun 21, 2016·Journal of Agricultural and Food Chemistry·Rosario ZamoraFrancisco J Hidalgo
Oct 27, 2016·Journal of Hazardous Materials·Chiung-Yu PengYi-Chun Kuo
May 28, 2009·Applied Spectroscopy·Diego L García-González, Frederik R van de Voort
Dec 18, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Dominik KmiecikBartosz Kulczyński
Nov 26, 2010·Journal of Agricultural and Food Chemistry·Luciane Conceição Silva Bastos, Pedro Afonso de Paula Pereira
Aug 12, 2014·Journal of Agricultural and Food Chemistry·Alice EwertPeter Schieberle
Oct 1, 2021·Environmental Science. Processes & Impacts·Alexandra SchieweckTunga Salthammer

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