Remarkable Proanthocyanidin Adsorption Properties of Monastrell Pomace Cell Wall Material Highlight Its Potential Use as an Alternative Fining Agent in Red Wine Production

2015 ◽  
Vol 63 (2) ◽  
pp. 620-633 ◽  
Author(s):  
Ana Belén Bautista-Ortín ◽  
Yolanda Ruiz-García ◽  
Fátima Marín ◽  
Noelia Molero ◽  
Rafael Apolinar-Valiente ◽  
...  
Keyword(s):  
Cell Wall ◽  
Red Wine ◽  
Adsorption Properties ◽  
Wall Material ◽  
Cell Wall Material ◽  
Wine Production ◽  
Potential Use ◽  
Fining Agent

scholarly journals Heat-Dependent Desorption of Proanthocyanidins from Grape-Derived Cell Wall Material under Variable Ethanol Concentrations in Model Wine Systems

Molecules ◽  
2019 ◽  
Vol 24 (19) ◽  
pp. 3561 ◽  
Author(s):  
Jordan W. Beaver ◽  
Konrad V. Miller ◽  
Cristina Medina-Plaza ◽  
Nicolas Dokoozlian ◽  
Ravi Ponangi ◽  
...  
Keyword(s):  
Cell Wall ◽  
Ethanol Concentration ◽  
Initial Conditions ◽  
Compositional Analysis ◽  
Wall Material ◽  
Cell Wall Material ◽  
Experimental Conditions ◽  
Wine Production ◽  
Increasing Temperature ◽  
Phenolic Extraction

Desorption of proanthocyanidins (PA) from grape cell wall material (CWM) was investigated in solutions of varying ethanol concentrations and increasing temperature. The results reveal the reversibility of PA-CWM interactions and the role that temperature and ethanol concentration play in the extent of PA desorption. Sequentially raising temperature from 15 to 35 °C resulted in desorption of up to 48% of the initial adsorbed PA. A comparison to a phenolic extraction model showed significant differences between the predicted and actual amount of PA that desorbed from the CWM. This suggests that the initial conditions of temperature and ethanol concentration must be considered when estimating PA extraction in red wine production. Under typical winemaking conditions, a significant amount of PA may be irreversibly adsorbed if exposed to CWM at low temperature (i.e., cold soak). A compositional analysis suggests the selective desorption of large molecular weight PA from CWM under all experimental conditions. Additionally, a preferential desorption of skin-derived PA over seed-derived PA was noted in the absence of ethanol.

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.

Bacterial Cell Wall Material Properties Determine E. Coli Resistance to Sonolysis

2021 ◽  
Author(s):  
Žiga Pandur ◽  
Matevž Dular ◽  
Rok Kostanjšek ◽  
David Stopar
Keyword(s):  
Cell Wall ◽  
Material Properties ◽  
Bacterial Cell ◽  
Bacterial Cell Wall ◽  
Wall Material ◽  
Cell Wall Material ◽  
E Coli

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 elastic modulus of spruce wood cell wall material measured by an in situ bending technique

2006 ◽  
Vol 41 (16) ◽  
pp. 5122-5126 ◽  
Author(s):  
Steffen Orso ◽  
Ulrike G. K. Wegst ◽  
Eduard Arzt
Keyword(s):  
Cell Wall ◽  
Elastic Modulus ◽  
Wood Cell Wall ◽  
Wall Material ◽  
Cell Wall Material ◽  
Spruce Wood

scholarly journals Electron Microscopic Observations on the Excretion of Cell-wall Material by Vibrio cholerae

1967 ◽  
Vol 49 (1) ◽  
pp. 1-11 ◽  
Author(s):  
S. N. Chatterjee ◽  
J. Das
Keyword(s):  
Cell Wall ◽  
Vibrio Cholerae ◽  
Wall Material ◽  
Cell Wall Material ◽  
Electron Microscopic

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.

The impact of chemical structure on polyphenol bioaccessibility, as a function of processing, cell wall material and pH: A model system

2021 ◽  
Vol 289 ◽  
pp. 110304 ◽  
Author(s):  
Eden Eran Nagar ◽  
Liora Berenshtein ◽  
Inbal Hanuka Katz ◽  
Uri Lesmes ◽  
Zoya Okun ◽  
...  
Keyword(s):  
Cell Wall ◽  
Chemical Structure ◽  
Model System ◽  
Wall Material ◽  
Cell Wall Material ◽  
The Impact
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