Determination of Free and Conjugated Quercetin in Moravian Red Wines

  • E. Dadakova Department of Chemistry, Faculty of Agriculture, University of South Bohemia, Ceske Budejovice,
  • N. Vrchotova Institute of Landscape Ecology, Academy od Science of the Czech Republic, Ceske Budejovice,
  • J. Triska Institute of Landscape Ecology, Academy od Science of the Czech Republic, Ceske Budejovice,
  • M. Kyselakova Department of Postharvest Technology of Horticultural Products, Faculty of Horticulture, Mendel University of Agriculture and Forestry in Brno, Lednice

Abstrakt

Free and conjugated quercetin in Moravian red wines were determined after acid hydrolysis. The measured concentrations are in agreement with most published data in the literature. The comparison of the vintage years 2000 and 2001 revealed increased concentrations of both quercetin types in 2000, which could be a consequence of a longer sunshine period in that year.
Publikované
2003-08-15
Sekce
Články