Evaluación de la cantidad de fenoles totales y capacidad antioxidante en extractos de hojas de mango

Abstract

Abstract:The research work contributes to the study of mango leaves. We worked with extracts obtained from supercritical extraction, pressurized fluids and enhanced extraction, also with precipitated particles of antioxidants encapsulated in polyvinylpyrrolidone and impregnated in mesoporous silica using supercritical technology. The samples were evaluated for total phenols (TF) using the Folin-Ciocalteu method and antioxidant capacity (AC) using the DPPH and FRAP methods. In extracts the highest content of TF was in the pressurized extract 315.83 mg EAG/g BH (wet basis), the CA by DPPH and FRAP values were 2180.32 μmol ET/g BH in the conventional extract; and 2023.95 μmol ET/g BH in the pressurized extract, respectively. In particles total phenols were 624.74 mg EAG/ g, while CA by DPPH and FRAP was 6969.23 and 4563.37 μmol ET/g particle, respectively. The highest amount of FT and CA were obtained in the encapsulated particles when using polyvinylpyrrolidone. Due to the high content of FT and CA in the obtained particles and extracts, these could be used in the cosmetic or food industry.