Recovery and Concentration of Antioxidants from Winery Wastes
| Autor: | Jorge Sineiro, Herminia Domínguez, Enma Conde, Elena Falqué, Andrés Moure, María Luisa Soto, Juan Carlos Parajó, María José Núñez, Noelia González-López, María Jesús Conde |
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| Přispěvatelé: | Universidade de Santiago de Compostela. Departamento de Enxeñaría Química |
| Rok vydání: | 2012 |
| Předmět: |
Radical scavengers
Antioxidant phenolics medicine.medical_treatment Liquid-Liquid Extraction Carbohydrates Pharmaceutical Science Wine Winery wastes Article winery wastes Analytical Chemistry lcsh:QD241-441 chemistry.chemical_compound Adsorption lcsh:Organic chemistry Phenols Desorption Drug Discovery medicine Recycling Vitis Benzothiazoles Gallic acid Physical and Theoretical Chemistry adsorption resins radical scavengers Ethanol Chromatography Plant Extracts Organic Chemistry Free Radical Scavengers Winery Kinetics Models Chemical chemistry Chemistry (miscellaneous) Solvents Regression Analysis Molecular Medicine Trolox Phenolics Sulfonic Acids Resins |
| Zdroj: | Molecules Molecules; Volume 17; Issue 3; Pages: 3008-3024 Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela instname Molecules, Vol 17, Iss 3, Pp 3008-3024 (2012) |
| ISSN: | 1420-3049 |
| Popis: | Grape and wine byproducts have been extensively studied for the recovery of phenolic compounds with antioxidant activity and a variety of biological actions. The selective recovery and concentration of the phenolic compounds from the liquid phase separated from further diluted winery wastes has been proposed. Adsorption onto non ionic polymeric resins and further desorption with ethanolic solutions was studied. Several commercial food grade resins were screened with the aim of selecting the most suited for the practical recovery of phenolic compounds with radical scavenging activity. Under the optimized desorption conditions (using Sepabeads SP207 or Diaion HP20 as adsorbents and eluting with 96% ethanol at 50 °C) a powdered yellow-light brown product with 50% phenolic content, expressed as gallic acid equivalents, was obtained. The radical scavenging capacity of one gram of product was equivalent to 2–3 g of Trolox The authors are grateful to grateful to the Spanish Ministry of Education and Science (Research Project reference ALG2006-05387, which had partial financial support from the FEDER funds of the European Union), and to Xunta de Galicia (Research Project Ref. PGIDIT06 TAM38301PR) for the financial support of this work. The authors thank Miguel Estévez for his excellent technical support. EC thanks the Spanish MEC (PTA-2003-02-00194) and AM thanks the MEC (PTA-2003-01-00194) and the Isidro Parga Pondal Program (Xunta de Galicia) SI |
| Databáze: | OpenAIRE |
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