foods Article Preliminary Investigation of Different Drying Systems to Preserve Hydroxytyrosol and Its Derivatives in Olive Oil Filter Cake Pressurized Liquid Extracts Lucía López-Salas 1, Inés Cea 2,3, Isabel Borrás-Linares 4,*, Tatiana Emanuelli 5 , Paz Robert 2, Antonio Segura-Carretero 4,6,† and Jesús Lozano-Sánchez 1,4,† 1 Department of Food Science and Nutrition, University of Granada, Campus Universitario S/N, 18071 Granada, Spain;
[email protected] (L.L.-S.);
[email protected] (J.L.-S.) 2 Departamento de Ciencia de los Alimentos y Tecnología Química, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 133, Santiago 8380494, Chile;
[email protected] (I.C.);
[email protected] (P.R.) 3 Center for Systems Biotechnology, Fraunhofer Chile Research, Av. Del Cóndor 844 Floor 3, Santiago 8580704, Chile 4 Functional Food Research and Development Centre (CIDAF), Health Sciencie Technological Park, Avda. Del Conocimiento S/N, 18016 Granada, Spain;
[email protected] 5 Department of Food Technology and Science, Center of Rural Sciences, Federal University of Santa Maria, Camobi, Santa Maria 97105-900, RS, Brazil;
[email protected] 6 Citation: López-Salas, L.; Cea, I.; Department of Analytical Chemistry, Faculty of Sciences, University of Granada, 18071 Granada, Spain * Correspondence:
[email protected]; Tel.: +34-9586-37083 Borrás-Linares, I.; Emanuelli, T.; † These authors are joint senior authors on this work. Robert, P.; Segura-Carretero, A.; Lozano-Sánchez, J. Preliminary Investigation of Different Drying Abstract: Phenolic compounds present in extra virgin olive oil (EVOO) could be retained in its Systems to Preserve Hydroxytyrosol byproducts during processing.