Phenol content, antioxidant activity and metal composition of Croatian wines deriving from organically and conventionally grown grapes (CROSBI ID 164372)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Vinković Vrček, Ivana ; Bojić, Mirza ; Žuntar, Irena ; Mendaš, Gordana ; Medić-Šarić, Marica
engleski
Phenol content, antioxidant activity and metal composition of Croatian wines deriving from organically and conventionally grown grapes
The present study was performed to evaluate the antioxidant capacity, the polyphenol and metal content of conventionally and organically produced wines, which underwent similar winemaking processes. The wine grapes were grown under well-defined organic and conventional conditions from the two different wine-growing sub-regions of Croatia, Prigorje and Southern Dalmatia. The values of antioxidant activity, as evaluated by two free radical methods, ABTS and DPPH, was found systematically higher in organic wines compared to conventional ones. In a reversed phase HPLC analysis, used in order to characterize the phenol fraction of wines, higher concentrations of chlorogenic acid, ferulic acid, catechin, trans-resveratrol, all studied hydroxybenzoic acids and flavonols were found in the organically produced wines. No apparent trend was found in the metal contents of the wines, but ICP-MS analysis confirmed that both wine productions, organic and conventional, were well within the toxicological safety limits.
organic wine; conventional wine; phenols; HPLC; antioxidant activity; ABTS; DPPH
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Podaci o izdanju
Povezanost rada
Kemija, Javno zdravstvo i zdravstvena zaštita, Farmacija