RT journal article T1 Inclusion of Natural Antioxidants of Mango Leaves in Porous Ceramic Matrices by Supercritical CO2 Impregnation A1 Guamán‑Balcázar, M.C. A1 Montes Herrera, Antonio A1 Valor López, Diego A1 Coronel, Yorkil A1 Santos Martínez, Deseada María de los A1 Pereyra López, Clara María A1 Martínez de la Ossa Fernández, Enrique José A2 Ingeniería Química y Tecnología de Alimentos A2 Química Física K1 supercritical impregnation K1 natural antioxidants K1 porous silica K1 mango leaves AB Mango is one of the most important, medicinal tropical plants in the world from an economic point of view due to the presence of effective bioactive substances as co-products in its leaves. The aim of this work was to enhance the impregnation of natural antioxidants from mango leaves into a porous ceramic matrix. The effects of pressure, temperature, impregnation time, concentration of the extract and different porous silica on impregnation of phenolic compounds and antioxidant activity were analyzed. The volume of the pressurized fluid extract and amount of porous ceramic matrix remained constant. The best impregnation conditions were obtained at 6 h, 300 bar, 60 mg/mL, 35 degrees C and with MSU-H porous silica. The results indicated that increasing the pressure, concentration of the extract and temperature during impregnation with phenolic compounds such as gallic acid and iriflophenone 3-C (2-O-p-hydroxybenzolyl)-beta-D-glucoside increased the antioxidant activity and the amount of total phenols. PB MDPI SN 1996-1944 YR 2022 FD 2022-09 LK http://hdl.handle.net/10498/28279 UL http://hdl.handle.net/10498/28279 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 11-nov-2026