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Bibliographic record number: 760851

Journal

Authors: Kraljić, Klara; Škevin, Dubravka; Barišić, Lidija; Kovačević, Monika; Obranović, Marko; Jurčević, Ivana
Title: Changes in 4-vinylsyringol and other phenolics during rapeseed oil refining
Source: Food chemistry (0308-8146) 187 (2015); 236-242
Paper type: article
Keywords: Rapeseed oil ; Refining ; Phenolic compounds ; 4-Vinylsyringol ; 4-Vinylsyringol dimer
Abstract:
The aim of the present study was to examine changes in phenolic compounds during refining of rapeseed oil. In crude rapeseed oil, 4- vinylsyringol (canolol) is the dominant phenolic compound, accounting for 85% of total phenolics. Refining decreased the total amount of phenolic compounds by 90%. NMR and MS analyses of edible rapeseed oil phenolic extracts identified 4-vinylsyringol dimer as the dominant phenolic compound. This phenolic compound appears to form through acid-catalyzed dimerization-aromatic substitution of 4- vinylsyringol monomers. Analysis of rapeseed oils from different stages of the refining process suggest that 4-vinylsyringol dimer forms during the neutralization phase, when H3PO4 acts as a catalyst, or during bleaching, when acid-activated bleaching earth acts as the catalyst. Whether 4-vinylsyringol forms during one or the other phase appears to depend on the phospholipid content of the crude oil. These insights may be useful for designing rapeseed oil refining processes that maximize levels of 4-vinylsyringol dimer.
Original language: ENG
Citation databases: Current Contents Connect (CCC)
MEDLINE
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Category: Znanstveni
Research fields:
Chemistry,Food processing technology
URL: https://www.sciencedirect.com/science/article/pii/S0308814615005853
Broj citata:
Altmetric:
DOI: 10.1016/j.foodchem.2015.04.039
URL cjelovitog rada:
Google Scholar: Changes in 4-vinylsyringol and other phenolics during rapeseed oil refining
Contrib. to CROSBI by: Klara Kraljić (kkraljic@pbf.hr), 11. Svi. 2015. u 08:42 sati



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