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Potential use of extra virgin olive oil in bakery products rich in fats: a comparative study with refined oils
Author(s) -
Caponio Francesco,
Giarnetti Mariagrazia,
Paradiso Vito M.,
Summo Carmine,
Gomes Tommaso
Publication year - 2013
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.2012.03161.x
Subject(s) - olive oil , food science , chemistry , shelf life , hydrolysis , lipid oxidation , oxidative phosphorylation , degradation (telecommunications) , fraction (chemistry) , acid value , organic chemistry , biochemistry , antioxidant , telecommunications , computer science
Summary The lipid fraction of bakery products undergoes a significant degradation during baking, with an increase in undesirable oxidised substances, that can act as catalysts for further oxidative reactions during storage reducing the product shelf life. The use of extra virgin olive oil in bakery products rich in fat in place of refined oils was studied, assessing the evolution of the oxidative and hydrolytic degradation during storage. Two‐way analysis of variance, followed by Tukey's HSD test for multiple comparisons, covariance and principal component analyses were carried out to compare the effect of the type of oils. The data obtained showed that the evolution of the oxidation levels in the analysed samples during storage was related to the type of oil used in the production process. Particularly, the use of extra virgin olive oil led to significantly lower values of hydroperoxides, ultraviolet absorption constants, triacylglycerol oligopolymers and oxidised triacylglycerols.