Changes of organic acids and phenolic compounds contents in grapevine berries during their ripening

• Autorzy: Irena Jančářová , Luděk Jančář , Alice Náplavová , Vlastimil Kubáň
• Języki publikacji: EN

Abstrakty

EN

Changes of total content of phenolic substances, alteration in total titratable acidity and differences in tartaric acid content in grapes of four white (Müller-Thurgau - MT, Pinot Blanc - Rulandské bílé in Czech, RB, Sauvignon (Sg), and Muscat Ottonel - Muškát Ottonel in Czech, MO) and two blue (Dornfelder - Df and Blue Frankish - Frankovka in Czech, Fr) grapevine varieties throughout their growth, ripening and maturing (July–November). Potentiometric titration was applied for the determination of total titratable acids in grapes (expressed as tartaric acid equivalents in g L−1). A spectrophotometric method according Rebelein based on the formation of a colored complex of ammonium metavanadate and tartaric acid was used for determination of tartaric acid in green juice made by pressing unripe grapes. A spectrophotometric method based on reduction of phosphomolybdato-tungsten complex in alkaline solution using Folin-Ciocalteau reagent was applied for determination of total content of phenolic substances (TCP). [...]

Słowa kluczowe

EN

Wine grapes; Vitis vinifera; Organic acids; Phenolic substances

• Czasopismo: Open Chemistry
• Rocznik: 2013
• Tom: 11
• Numer: 10
• Strony: 1575-1582

Daty

wydano

2013-10-01

online

2013-07-19

Twórcy

autor

Irena Jančářová

• Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, 61300, Brno, Czech Republic

autor

Luděk Jančář

• Department of Chemistry, Faculty of Education, Masaryk University in Brno, 61137, Brno, Czech Republic

autor

Alice Náplavová

• Department of Chemistry, Faculty of Education, Masaryk University in Brno, 61137, Brno, Czech Republic

autor

Vlastimil Kubáň

• Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlín, 76272, Zlín, Czech Republic,

Bibliografia

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Identyfikatory

DOI

10.2478/s11532-013-0288-2