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8 Páginas.-- 3 Figuras.-- 2 Tablas, Refined olive pomace oil (OPO) was studied as an alternative to sunflower oil (SO) in oil-based cakes with anise essence, a traditional confectionery baked product in Spain. Partial and total oil replacements in cakes obtained at an industrial level were evaluated. The influence of processing and storage on the oxidation extent and the contents of oil bioactive components was investigated. Results showed a low oxidative impact of the processing, which was significantly lower for OPO. Oxidation was however considerably high in SO at the end of the shelf-life (6 months), presenting peroxide values higher than 150 meq/kg oil, and very low in OPO, with peroxides close to the limit for fresh refined oils (5 meq/kg). Oil blends containing 25 or 50 wt% OPO exhibited intermediate results. Bioactive oil components practically remained unchanged in the processing, but significant losses of α-tocopherol were detected after 6-month storage, with 30–50% losses for SO and ∼15% for OPO. The levels of squalene also remained high in OPO (90%) and no significant changes were found for sterols, triterpenic alcohols or triterpenic acids. A consumer panel test showed no differences between the fresh samples, but clear preferences for the new OPO-containing products were found during storage., This work was funded by ORIVA through project with reference 20214171 and by MCIN/AEI/10.13039/501100011033 through project with reference PID2020-119304RB-I00., Peer reviewed

This article belongs to the Special Issue Antioxidants and Oxidative Stability in Fats and Oils., It has been proposed that lipid oxidation reactions in edible oils primarily occur in reverse micelles (RM) of amphiphilic components. While the prooxidative effect of RM has been demonstrated, the mechanism involved is not fully understood. Both reductions and enhancements in the antioxidant efficacy (AE) of α-tocopherol and Trolox have been observed in different studies when phosphatidylcholine (PC) was added and PC RM were formed. However, most of these investigations employed lipid systems consisting of stripped vegetable oil diluted in saturated medium-chain triacylglycerols (MCT) and utilized antioxidant concentrations well below those found in edible oils. These two specific factors were investigated in the present study. The effect of RM of purified egg yolk PC on the AE of 1.16 mmol kg−1 α-tocopherol or Trolox in stripped sunflower oil (SSO) was studied by the Rancimat (100 °C) and oven (50 °C) tests. Increasing PC concentrations (50–1000 ppm) had no significant impact on α-tocopherol, but substantial reductions in AE were observed for Trolox. This phenomenon may be attributed to the partitioning of Trolox into the pre-existing PC micelles, suggesting that primary oxidation reactions occurred in the continuous lipid phase. In addition, the effectiveness of both antioxidants decreased significantly in the presence of PC when a low antioxidant concentration (0.06 mmol kg−1) was assayed in SSO:MCT (1:3, w/w), This research was funded by MCIN/AEI/10.13039/501100011033 through project with reference PID2020-119304RB-I00., Peer reviewed

[Content of the file SUPRACHEM_Dataset_Reverse-micelles-I _xlsx/ods] The file contains sheets that have been named according to the data presented in figures in the research article. As an example, Figure 1 RM Ms I present the data in Figure 1 expressed as mean and standard deviation, as well as the figure featured in the article. In addition, Fig 1 SPPS includes the raw data in Figure 1 and the results of the statistical analysis provided by 29.0 IBM SPSS Statistics software program., Descripción de los contenidos de los ficheros:
- Archivo Excel con nombre “SUPRACHEM_Dataset_Reverse-micelles-I_xlsx.xlsx”.
- Hoja de cálculo de OpenDocument con nombre “SUPRACHEM_Dataset_Reverse-micelles-I_ods.ods”.
- Archivo formato rtf o README file con nombre “SUPRACHEM_Dataset_Reverse-micelles-I _README_rtf.rtf”., Los datos han sido generados utilizando Excel Office 2019 e IBM SPSS Statistics versión 29.0. Los datos SPSS han sido exportados a Excel., This dataset corresponds to those obtained in a study on the influence of reverse micelles of yolk egg phosphatidylcholine on the antioxidant efficacy of α-Tocopherol and its polar counterpart Trolox in sunflower oil. In this work, we examined the experimental conditions applied in most studies in this field and compared them to a model that was closer to an edible oil. Specifically, we studied the low antioxidant concentrations typically used in these studies, along with the lipid substrate, which is typically a stripped vegetable oil diluted in medium-chain triacylglycerol (MCT) oil. The results obtained were contrasted to a model consisting of a stripped vegetable oil (sunflower oil) with no lipid dilution and antioxidant concentrations normally found in the neat or non-stripped oil. This study has recently been published in the Journal Antioxidants (Antioxidants 2023, 12, 1993. https://doi.org/10.3390/antiox12111993) and it was developed within the framework of the SUPRACHEM project, titled "New Insights into the Loss of Antioxidant Effectiveness of Phenolic Compounds in Vegetable Oils in the Presence of Phosphatidylcholine"., SUPRACHEM (Supramolecular Interactions of Natural Antioxidants to Prolong the Shelf-Life of Foods), funded by MCIN/AEI/10.13039/501100011033 through project with reference PID2020-119304RB-I00., The data set consists of: - a numerical quantitative file saved both in .xlsx and .ods formats (“SUPRACHEM_Dataset_Reverse-micelles-I_xlsx.xlsx” and “SUPRACHEM_Dataset_Reverse-micelles-I_ods.ods”) - a README file: “SUPRACHEM_Dataset_Reverse-micelles-I _README_rtf.rtf”., Peer reviewed