RT info:eu-repo/semantics/article
T1 Phenolic characterization of aging wine lees: correlation with antioxidant activities
A1 Romero Díez, Rut
A1 Rodríguez Rojo, Soraya
A1 Cocero Alonso, María José
A1 Duarte, Catarina M.M.
A1 Matias, Ana A.
A1 Bronze, Maria Rosario
K1 Aging wine lees
K1 Phenolic Characterization
K1 Antioxidant activity
K1 LC-MS/MS
K1 Correlation study
K1 Anthocyanins
AB Aging wine lees are water-wastes produced during the wine aging inside wood barrels that can be considered as alternative sources of bioactive compounds. Phenolic characterization and antioxidant activity (AA) measurements of wines lees solid-liquid extracts have been undertaken on a dry extract (DE) basis. Solvents with different polarities (water, methanol, ethanol, two hydroalcoholic mixtures and acetone) were used. Total phenolic (TPC) and total flavonoid contents (TFC) were determined. The mixture of 75:25(v/v) EtOH:H2O showed the highest values with 254mgGAE/gDE and 146mgCATE/gDE respectively. HORAC, HOSC and FRAP were used to determine the AA of the extracts being also highest for the mixture of 75:25(v/v) EtOH:H2O (4,690 µmolCAE/gDE, 4,527 µmolTE/gDE and 2,197 µmolTE/gDE, respectively). For ORAC method, methanol extract showed the best value with 2,771µmolTE /gDE. Correlations between TPC, TFC, phenolic compounds and AA were determined. Most relevant compounds contributing to AA were identified using data from mass spectrometry, being mainly anthocyanins.
PB Elsevier Ltd.
YR 2018
FD 2018
LK http://uvadoc.uva.es/handle/10324/31433
UL http://uvadoc.uva.es/handle/10324/31433
LA eng
NO Food Chemistry, 2018, vol. 259, p.188–195
DS UVaDOC
RD 12-jul-2024