Sugar levels in Charmat sparkling wines can affect the quality and resveratrol levels.
Redox Rep
; 15(6): 243-9, 2010.
Article
em En
| MEDLINE
| ID: mdl-21208523
Sparkling wines contain CO(2) obtained through a second fermentation by natural processes (Charmat method); they may be prepared with variable final sugar concentrations, resulting in physicochemical compositions and phenolic profiles different to those obtained with other natural methods. The purpose of this study was to verify the influence of sweetness on enological parameters, trans-resveratrol and trans-piceid levels, antioxidant capacity (power of scavenger the radical DPPH(â¢) (1,1-diphenyl-2-picrylhydrazyl) and mimetic enzymatic activities of superoxide dismutase (SOD-like) and catalase (CAT-like) assays, and ß-glucosidase activities on Charmat sparkling wines. The interaction of polyphenol levels and sweetness was observed. Levels of trans-piceid and trans-resveratrol showed a decrease in function of glucose concentration up to 40 g/l. All samples showed antioxidant capacity and ß-glucosidase activity was stable even in the presence of sugar. A positive correlation between SOD-like and DPPH(â¢) was observed. This work shows an approach able to clarify important aspects for the wine industry with regard to world-wide consumer demand for sweetened products.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Estilbenos
/
Vinho
Idioma:
En
Revista:
Redox Rep
Assunto da revista:
BIOQUIMICA
/
METABOLISMO
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Reino Unido