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Mostrando ítems 11-19 de 19
Artículo
Application of the differential colorimetry and polyphenolic profile to the evaluation of the chromatic quality of Tempranillo red wines elaborated in warm climate. Influence of the presence of oak wood chips during fermentation
(Elsevier, 2013-12-01)
The effect of adding American oak wood chips during fermentation on Tempranillo red wines elaborates in a warm climate has been studied. Our attention was focused on the tristimulus colorimetry, differential colorimetry ...
Artículo
Grape seed characterization by NIR hyperspectral imaging
(Elsevier, 2013-02)
Currently, the time of grape harvest is normally determined according to the sugar level in the pulp of the berry. Nonetheless, the stage of maturation in grape seeds should be taken into account more frequently to decide ...
Artículo
Impact of adding white pomace to red grapes on the phenolic composition and color stability of syrah wines from a warm climate
(American Chemical Society, 2014-03-26)
The influence of the fermentative addition of Pedro Ximenez grape pomace (PXGP, white variety) on the phenolic composition and color of Syrah red wines from a warm climate was studied. Changes on phenolic composition (HPLC), ...
Artículo
Ripeness estimation of grape berries and seeds by image analysis
(Elsevier, 2012-03)
Digital imaging has become a powerful tool for the characterization and quality control of foodstuff. Because of the need to automate processes, faster tools are needed and Computer Vision is a good alternative to chemical ...
Artículo
Comparative Study of the Enological Potential of DifferentWinemaking Byproducts: Implications in the Antioxidant Activityand Color Expression of Red Wine Anthocyanins in a Model Solution
(American Chemical Society, 2014)
Different white winemaking byproducts (pomace, skins, seeds, and stems) were compared as natural sources of phenolic compounds having biological and sensory properties of enological interest. Antioxidant and copigmentation ...
Artículo
Application of LC-MS and tristimulus colorimetry to assess the ageing aptitude of Syrah wine in the Condado de Huelva D.O. (Spain), a typical warm climate region
(Elsevier, 2012-06-30)
The study of the evolutions of different wine pigment families, copigmentation/polymerisation processes and colour characteristics during the first year of ageing in oak barrel has allowed the assessment of the ageing ...
Artículo
Application of differential colorimetry to evaluate anthocyanin-flavonol-flavanol ternary copigmentation interactions in model solutions
(American Chemical Society, 2015)
The combined effect of anthocyanin−flavanol−flavonol ternary interactions on the colorimetric and chemical stability of malvidin-3-glucoside has been studied. Model solutions with fixed malvidin-3-glucoside/(+)-catechin ...
Artículo
Optimisation of an Oak Chips-grape Mix Maceration Process. Influence of Chip Dose and Maceration Time
(Elsevier, 2016)
Oak chips-related phenolics are able to modify the composition of red wine and modulate the colour stability. In this study, the effect of two maceration techniques, traditional and oak chips-grape mix process, on the ...
Artículo
Comprehensive Colorimetric Study of Anthocyanic Copigmentation in Model Solutions. Effects of pH and Molar Ratio
(American Chemical Society, 2012)
New colorimetric variables have been defined in the uniform CIELAB color space to assess the quantitative and qualitative color changes induced by copigmentation and their incidence on visual perception. The copigmentation ...