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Updated: Jun 9, 2026

Microwave-Assisted Extraction of Phenolic Compounds and Antioxidants for Cosmetic Applications Using Polyol-Based Technology
Published on: August 23, 2024
Development of a phenol-enriched olive oil with phenolic compounds from olive cake
Manuel Suárez1, Maria-Paz Romero, Maria-José Motilva
1Food Technology Department, XaRTA-TPV, Escuela Técnica Superior de Ingeniería Agraria, University of Lleida, Av/Alcalde Rovira Roure 191, 25198 Lleida, Spain.
Abstract:
The recent information regarding the healthy properties of virgin olive oil phenols and the interest in increasing the value of byproducts from the oil extraction processs support the standardized development of phenol-enriched olive oil. Accordingly, the aim of this research work was to evaluate strategies for the development of a virgin olive oil enriched with phenolic compounds obtained from olive cake to increase phenolic ingestion without the drawback of a higher calorie intake. For this proposal, different combinations of phenolic extracts were evaluated at a range of concentrations to obtain the best prototype of enriched olive oil. To study the functionality of the phenol enrichments, the total phenolic content and the oxidative stability were determined by the Folin-Ciocalteu and Rancimat tests, respectively. In addition, the phenolic composition and antioxidant capacity (ORAC assay) of the oils were studied. Finally, the stability and potential bioaccesibility of the phenolic fraction of the enriched oils were tested by an in vitro gastrointestinal digestion model. Results of the study showed different strategies to select the best prototype of enriched olive oil, taking into consideration not only their phenolic content but also other important factors such as the feasibility of implementing the preparation process in the food industry.
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