Journal
FOOD CHEMISTRY
Volume 203, Issue -, Pages 104-116Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2016.01.137
Keywords
AComDim; Experimental design; Multivariate; Metabolite; Olive oil ageing; Quality indices
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Lipid oxidation during olive oil storage induces changes in the metabolite content of the oil, which can be measured using so-called quality indices. High values indicate poor quality oils that should be labeled accordingly or removed from the market. Based on quality indices measured over two years for two olive oils, the AComDim method was used to highlight the influence of five factors (olive oil type, oxygen, light, temperature and storage time) on oxidative stability during storage. To identify the significant factors, two full factorial experimental designs were built, each containing four of the five factors examined. The results showed that all five factors, as well as some two-factor interactions, were significant. Phenols and hydroperoxides were identified as being the most sensitive to these factors, and potential markers for the ageing of olive oil. (c) 2016 Elsevier Ltd. All rights reserved.
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