Recovery of bioactive compounds from beetroot leaves by supercritical CO2 extraction as a promising bioresource

Supercritical fluid extraction by using CO2 can be employed as an alternative to conventional methods for extracting functional compounds from vegetable leaves. Overall extractions curves of bioactive compounds from beetroot leaves were performed using scCO(2) with ethanol as co-solvent. Yield, total phenolic compounds and antioxidant activity were determined for each extract. The best results were obtained at 35 degrees C/400 bar, with values of total phenolics 3370.8 mu g GAE/ g d.m. and antioxidant capacity by DPPH of 1454.0 mu g TE/g d.m. (C) 2019 Elsevier B.V. All rights reserved.