Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4562204 | Food Research International | 2010 | 8 Pages |
The effect on the colour of the mixture of wines from different red varieties has been studied. In it make concrete, the effect of adding wine from Graciano cv. ([G]) on the colour and anthocyanic composition of Tempranillo cv. wine ([T]) has been studied. For this purpose, successive binary mixtures of [G] and [T] monovarietal red wines were prepared, and analyzed just after mixing, 24 h later, and 100 days later to determined the evolution occurred along this period.Results showed differences between varieties. Regarding the colour, [G] led to quite darker (lower L∗) and colourfulness (higher Cab∗) wines. During the evolution phase, [G] showed more stable colour while higher colour differences (ΔE) were found in [T]. Concerning the anthocyanic content, Pn3gl and Pn3ac showed almost exclusive in [G] wines. Decreases of Df3gl, Pt3gl and Mv3gl were found in [T] during the evolution phase.Higher values of ΔE occurring in the mixtures than in [T] and [G] indicated lesser colour stability. This “extra” modification (mixing effect) is practically independent of the chemical composition since the added-ΔE is quite constant in all mixtures.Correlations between colorimetric coordinates and anthocyanic content were also determined and it has been revealed that the inclusion of coumarate derivatives data improved the regressions.