RT Journal Article
T1 Recovery of phenolic compounds from Eucalyptus wood wastes using ethanol-salt-based aqueous two-phase systems
A1 Xavier Saavedra, Ana Lucía
A1 Freire Leira, María Sonia
A1 Vidal Tato, María Isabel
A1 González Álvarez, Julia
K1 Alcohol/salt system
K1 Aqueous two-phase systems
K1 Natural antioxidants
K1 Phenolic compounds
K1 Wood extraction
AB In this work the partition behavior of phenols using ethanol-salt-based aqueous two phase systems (ATPS) was evaluated. The aim was the recovery of phenolic compounds with antioxidant capacity from eucalyptus wood industrial wastes. Experiments were planned to study the influence of several parameters on phenols partition, including type of inorganic salt (ammonium sulphate, a mixture of monopotassium phosphate and potassium diphosphate and potassium diphosphate), tie-lie lenght (TLL), volume ratio (Vr), settlement time and temperature. Phenols could be recovered preferently from the top or bottom phases depending on the salt used. It was demostrated that tie-lie lenght, volume ratio and temperature had influence on phenols partition. The highest total phenols yield 5,36 mg gallic acid equivalent (100 mg oven dried wood)-1 and FRAP antioxidant activity, 20 mmol AAE (100 g oven dried wood)-1, was obtained using ATPS formed by 40,6% (w/w) ethanol and 12% (w/w) of ammonium sulphate at 65°C.Analysis of the extract by RP-HPLC-ESI-TOF confirmed the presence of the phenolic compounds with potential antioxidant activity, namely, ellagic acid, myricetin 3-O-rhamnoside and quercetin 3-glucoside.
PB Universidad del Bío-Bío
SN 0717-3644
YR 2017
FD 2017
LK http://hdl.handle.net/10347/22333
UL http://hdl.handle.net/10347/22333
LA eng
NO Xavier, Lucía, Freire, M. Sonia, Vidal-Tato, Isabel, and González-Álvarez, Julia. (2017). Recovery of phenolic compounds from Eucalyptus wood wastes using ethanol-salt-based aqueous two-phase systems. Maderas. Ciencia y tecnología, 19(1), 03-14. Epub 00, 2016.https://dx.doi.org/10.4067/S0718-221X2017005000001
NO This work was partially financed by Comisión Sectorial de Investigación Científica (CSIC) from Uruguay through the project “Iniciación a la investigación: CSIC-UDELAR-INI 2013”
DS Minerva
RD 29 abr 2026