ontribution of denaturing and deodorization processes of oils o toxic oil syndrome
eywords: oxic oil syndrome enaturing In this article, denaturing with aniline and refining process of the oil responsible for toxic oil syndrome is briefly reviewed. The aspects considered include description of conditions of the main refining steps in relation to aniline derivatives formation, with special focus on the deodorization stage. In this last step of the refining process, an increase in the temperature, applied to such an unusual oil, could have given rise to the formation of anilides and 3-N-phenylamino-1,2-propanediol esters.
Studies on the Toxic Oil Syndrome: proposal of a mechanism for the thermal conversion of 3-N-phenylamino-1,2-propanediol esters into anilides under deodorisation conditions
A study on the reaction mechanism for the conversion of title esters, the species recognised as toxic biomarkers of the oil batches responsible for the Toxic Oil Syndrome, into the corresponding anilides under the thermal conditions of an oil deodorisation process was performed using experimental and computational techniques. The results obtained suggest a reaction course that includes two basic steps: an intramolecular process involving the reaction of the amine group of the diester derivative with the secondary ester of the same compound, followed by the attack of an aniline molecule to form the (E)-isomer of an imidic acid, which would finally tautomerise to give the final anilide.
Pesticide removal efficiencies of soybean oil refining processes
Soybeans, soybean flakes, crude oil, alkali-refined oil, and bleached oil were spiked with four kinds of pesticides (dichlorvos, malathion, chlorpyrifos, and captan) and were subjected to roasting, extraction, alkali refining, bleaching, and deodorizing under laboratory conditions. The pesticide levels in the products and the byproducts were determined immediatety after processing