Fining of Red Wines with Pomace Cell Wall Material: Effect on Wine Phenolic Composition

2017 ◽  
Vol 10 (8) ◽  
pp. 1531-1539 ◽  
Author(s):  
M. D. Jiménez-Martínez ◽  
E. Gómez-Plaza ◽  
N. Molero ◽  
A. B. Bautista-Ortín
Keyword(s):  
Cell Wall ◽  
Wall Material ◽  
Cell Wall Material ◽  
Phenolic Composition ◽  
Red Wines

Elimination of Suspended Cell Wall Material in Musts Improves the Phenolic Content and Color of Red Wines

2018 ◽  
Vol 70 (2) ◽  
pp. 201-204 ◽  
Author(s):  
Andrea Osete-Alcaraz ◽  
Ana Belén Bautista-Ortín ◽  
Ana Ortega-Regules ◽  
Encarna Gómez-Plaza
Keyword(s):  
Cell Wall ◽  
Phenolic Content ◽  
Wall Material ◽  
Cell Wall Material ◽  
Red Wines ◽  
Suspended Cell

scholarly journals Effectiveness of Fibers from “Cabernet Sauvignon” (Vitis vinifera) Pomace as Fining Agents for Red Wines

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Mariona Gil ◽  
Rubén Del Barrio-Galán ◽  
Cristina Úbeda ◽  
Álvaro Peña-Neira
Keyword(s):  
Cell Wall ◽  
Wall Material ◽  
Cabernet Sauvignon ◽  
Phenolic Composition ◽  
Red Wines ◽  
Applied Dose ◽  
Color Density ◽  
Fining Agents ◽  
High Doses ◽  
Wine Matrix

Recent findings have highlighted the potential of fibers from grape cell wall material to be fining agents for red wines as alternatives to animal-derived proteins. The affinity of those fibers for grape proanthocyanidins (also known as condensed tannins) seems to depend on the initial phenolic composition of the wines to be fined and on the applied dose of fibers. In the present work, “Cabernet Sauvignon” grapes were harvested at three different maturity levels and used for making red wine. The pomaces of the three vinifications were used to obtain the cell wall fibers. Each wine was treated with the three purified fibers at two different doses (0.2 g/L and 2.5 g/L) under winery-like conditions in order to check the potential of fibers as fining agents. Color and phenolic composition of the treated wines were determined immediately after the treatments and after four and nine months of wine bottle ageing. The effectiveness of the fining strongly depends on the initial wine matrix. Wines treated at high doses had lower color density and higher hue than control untreated wines. Small differences were observed in the phenolic content of the treated wines. Those differences were dose dependent and almost disappeared after several months of ageing. The maturity of the grapes from which the fibers came had no influence on the effectiveness of the fining. Additionally, there was no evidence of polysaccharide release from the fibers to the wine.

scholarly journals The Evolution of Phenolic Compounds in Vitis vinifera L. Red Berries during Ripening: Analysis and Role on Wine Sensory—A Review

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 999
Author(s):  
Gianluca Allegro ◽  
Chiara Pastore ◽  
Gabriele Valentini ◽  
Ilaria Filippetti
Keyword(s):  
Cell Wall ◽  
Vitis Vinifera ◽  
Multidisciplinary Approach ◽  
Current Knowledge ◽  
Wall Material ◽  
Vitis Vinifera L ◽  
Cell Wall Material ◽  
Red Wines ◽  
Review Reports

The study of phenolic maturity in Vitis vinifera L. requires a multidisciplinary approach to understand how the evolution of berry flavonoids and cell wall material influence the colour and the textures of red wine. This is a challenging issue which involves researchers of viticulture and enology, and the results of their work are of particular interest for the producers of high-quality red wines. This review reports the current knowledge regarding phenolic maturity, describing the sensorial traits of the different compounds, the evolution of berry flavonoids and the methodologies used to evaluate their characteristics. Finally, the role of cell wall material in influencing the extractability of anthocyanins and proanthocyanidins was shown. By means of a critical review of the results, it can be hypothesised that prolonged ripening improved colour characteristics and mouthfeel properties, thanks to the higher amounts of extractable skin flavonoids associated with lower amounts of seed proanthocyanidins, and to the increased affinity of the cell wall material for the proanthocyanidins most involved in the perception of unpleasant astringency.

Synchrotron infrared microspectroscopy reveals the response of Sphagnum cell wall material to its aqueous chemical environment

2018 ◽  
Vol 15 (8) ◽  
pp. 513
Author(s):  
Ewen Silvester ◽  
Annaleise R. Klein ◽  
Kerry L. Whitworth ◽  
Ljiljana Puskar ◽  
Mark J. Tobin
Keyword(s):  
Cell Wall ◽  
Cell Walls ◽  
Chemical Environment ◽  
Wall Material ◽  
Organic Soils ◽  
Cell Wall Material ◽  
Acid Base ◽  
Widespread Species ◽  
Flowing Liquid ◽  
Infrared Microspectroscopy

Environmental contextSphagnum moss is a widespread species in peatlands globally and responsible for a large fraction of carbon storage in these systems. We used synchrotron infrared microspectroscopy to characterise the acid-base properties of Sphagnum moss and the conditions under which calcium uptake can occur (essential for plant tissue integrity). The work allows a chemical model for Sphagnum distribution in the landscape to be proposed. AbstractSphagnum is one the major moss types responsible for the deposition of organic soils in peatland systems. The cell walls of this moss have a high proportion of carboxylated polysaccharides (polygalacturonic acids), which act as ion exchangers and are likely to be important for the structural integrity of the cell walls. We used synchrotron light source infrared microspectroscopy to characterise the acid-base and calcium complexation properties of the cell walls of Sphagnum cristatum stems, using freshly sectioned tissue confined in a flowing liquid cell with both normal water and D2O media. The Fourier transform infrared spectra of acid and base forms are consistent with those expected for protonated and deprotonated aliphatic carboxylic acids (such as uronic acids). Spectral deconvolution shows that the dominant aliphatic carboxylic groups in this material behave as a monoprotic acid (pKa=4.97–6.04). The cell wall material shows a high affinity for calcium, with a binding constant (K) in the range 103.9–104.7 (1:1 complex). The chemical complexation model developed here allows for the prediction of the chemical environment (e.g. pH, ionic content) under which Ca2+ uptake can occur, and provides an improved understanding for the observed distribution of Sphagnum in the landscape.

scholarly journals Influence of Lignin on Digestibility of Forage Cell Wall Material

1986 ◽  
Vol 62 (6) ◽  
pp. 1703-1712 ◽  
Author(s):  
H. G. Jung ◽  
K. P. Vogel
Keyword(s):  
Cell Wall ◽  
Wall Material ◽  
Cell Wall Material

The Effect of Siduron Upon Barley Root Metabolism

Weed Science ◽  
1968 ◽  
Vol 16 (3) ◽  
pp. 344-347 ◽  
Author(s):  
Walter E. Splittstoesser
Keyword(s):  
Cell Wall ◽  
Nucleic Acid ◽  
Hordeum Vulgare ◽  
Shoot Growth ◽  
Acid Metabolism ◽  
Wall Material ◽  
Nucleic Acid Metabolism ◽  
Cell Wall Material ◽  
Cell Wall Synthesis ◽  
Root Metabolism

Barley (Hordeum vulgareL. var. Trail) root growth was inhibited at lower concentrations of 1-(2-methylcyclohexyl)-3-phenylurea (siduron) than was shoot growth. The influence of siduron upon root metabolism was assessed with excised roots grown in 0 or 5 ppm siduron. More glucose-U-14C and leucine-U-14C were degraded to CO2and less were incorporated into cell wall material and protein by roots grown in siduron. However, roots grown in siduron incorporated more adenine-8-14C into nucleic acids and degraded less adenine to CO2than roots grown in water. It was suggested that siduron disrupted the normal nucleic acid metabolism of barley roots which was necessary for protein and cell wall synthesis.

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