Assessment of Potential Effects of Common Fining Agents Used for White Wine Protein Stabilization

2012 ◽  
Vol 63 (4) ◽  
pp. 574-578 ◽  
Author(s):  
Ricardo Chagas ◽  
Sara Monteiro ◽  
Ricardo Boavida Ferreira
Keyword(s):  
White Wine ◽  
Protein Stabilization ◽  
Fining Agents

scholarly journals Effect of Pre-Fermentative Maceration and Fining Agents on Protein Stability, Macromolecular, and Phenolic Composition of Albariño White Wines: Comparative Efficiency of Chitosan, k-Carrageenan and Bentonite as Heat Stabilisers

Foods ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 608
Author(s):  
Inma Arenas ◽  
Miguel Ribeiro ◽  
Luís Filipe-Ribeiro ◽  
Rafael Vilamarim ◽  
Elisa Costa ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Protein Stability ◽  
White Wine ◽  
The Other ◽  
White Wines ◽  
Comparative Efficiency ◽  
Fining Agents ◽  
Protein Instability ◽  
Related Proteins ◽  
Protein Stabilisation

In this work, the effect of pre-fermentative skin maceration (PFSM) on the chemical composition of the macromolecular fraction, polysaccharides and proteins, phenolic compounds, chromatic characteristics, and protein stability of Albariño monovarietal white wines was studied. PFSM increased the extraction of phenolic compounds and polysaccharides and reduced the extraction of pathogenesis-related proteins (PRPs). PFSM wine showed significantly higher protein instability. Sodium and calcium bentonites were used for protein stabilisation of wines obtained with PFSM (+PFSM) and without PFSM (−PFSM), and their efficiencies compared to fungal chitosan (FCH) and k-carrageenan. k-Carrageenan reduced the content of PRPs and the protein instability in both wines, and it was more efficient than sodium and calcium bentonites. FCH was unable to heat stabilise both wines, and PRPs levels remained unaltered. On the other hand, FCH decreased the levels of wine polysaccharides by 60%. Sodium and calcium bentonite also decreased the levels of wine polysaccharides although to a lower extent (16% to 59%). k-Carrageenan did not affect the wine polysaccharide levels. Overall, k-carrageenan is suitable for white wine protein stabilisation, having a more desirable impact on the wine macromolecular fraction than the other fining agents, reducing the levels of the wine PRPs without impacting polysaccharide composition.

scholarly journals Gelatine, casein and potassium caseinate as distinct wine fining agents: different effects on colour, phenolic compounds and sensory characteristics

OENO One ◽  
2007 ◽  
Vol 41 (4) ◽  
pp. 203 ◽  
Author(s):  
Asençao Braga ◽  
Fernanda Cosme ◽  
Jorge Manuel Ricardo-da-Silva ◽  
Olga Laureano
Keyword(s):  
Phenolic Compounds ◽  
Charge Density ◽  
Surface Charge ◽  
Surface Charge Density ◽  
White Wine ◽  
Sensory Characteristics ◽  
Wine Quality ◽  
Physico Chemical ◽  
Fining Agents ◽  
Monomeric Anthocyanins

<p style="text-align: justify;"><strong>Aims</strong>: Describe and compare some characteristics, such as molecular weight (MW) distribution and surface charge density of commercial protein fining agents and to enhance the understanding of their effect on wine chemical and sensory characteristics.</p><p style="text-align: justify;"><strong>Methods and results</strong>: Protein (casein, potassium caseinate and gelatine) MW distribution was characterised by electrophoresis. These proteins were added to a red and a white wine, in order to evaluate its effect on colour, phenolic compounds and sensory attributes.</p><p style="text-align: justify;"><strong>Conclusion</strong>: A band at 30.0 kDa characterised casein and potassium caseinate. Gelatines showed polydispersion on the MW distribution, gelatine GSQ on the higher MW (&gt; 43.0 kDa) and gelatine GL on the lower MW (&lt; 43.0 kDa). Despite the fact that casein and potassium caseinate had similar MW distribution, casein decreased essentially the monomeric ((+) - catechin and (-) - epicatechin) while the potassium caseinate showed a lower influence on these compounds. Also, among the two gelatines used, a different behaviour was observed. The gelatine characterised by a polydispersion below 43.0 kDa depleted more the polymeric tannin fractions than the gelatine characterised by a polydispersion above 43.0 kDa. That gelatine has also decreased colour intensity and coloured anthocyanins of red wine but the hue remains unchanged. Addition of fining agents did not affect greatly the concentration of monomeric anthocyanins. Sensory analysis showed that wines fined with the different proteins presented distinct characteristics.</p><p style="text-align: justify;"><strong>Significance and impact of study</strong>: The knowledge of the physico-chemical characteristics, such as MW distribution and surface charge density, is important for wine fining optimisation and consequently for the wine quality.</p>

White Wine Continuous Protein Stabilization by Packed Column

2004 ◽  
Vol 52 (6) ◽  
pp. 1558-1563 ◽  
Author(s):  
Vesselina Pashova ◽  
Carme Güell ◽  
Francisco López
Keyword(s):  
Packed Column ◽  
White Wine ◽  
Protein Stabilization

scholarly journals Elimination of Aflatoxins B1 and B2 in White and Red Wines by Bentonite Fining. Efficiency and Impact on Wine Quality

Foods ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1789
Author(s):  
Fernanda Cosme ◽  
António Inês ◽  
Beatriz Ferreira ◽  
Davide Silva ◽  
Luís Filipe-Ribeiro ◽  
...  
Keyword(s):  
Red Wine ◽  
High Efficiency ◽  
Color Difference ◽  
White Wine ◽  
Red Wines ◽  
Technological Solution ◽  
Wine Quality ◽  
Total Anthocyanins ◽  
Fining Agents ◽  
The Impact

Aflatoxins B1 and B2 are two highly toxic mycotoxins that have been sometimes found in wines. Currently, no technological solution is available to reduce or eliminate aflatoxins from wines when they are present. Therefore, this work aims to study the efficiency of already approved wine fining agents like activated carbon, potassium caseinate, chitosan, and bentonite for aflatoxins B1 and B2 removal from white and red wines. It was observed that the fining agents’ efficiency in removing aflatoxins was dependent on the wine matrix, being higher in white than in red wine. Bentonite was the most efficient fining agent, removing both aflatoxins (10 μg/L total) from the white wine and 100% of aflatoxin B1 and 82% of aflatoxin B2 from red wine. The impact of bentonite on white wine chromatic characteristics was low (color difference, ΔE* = 1.35). For red wine, bentonite addition caused a higher impact on wine’ chromatic characteristics (ΔE* = 4.80) due to the decrease in total anthocyanins, although this decrease was only 1.5 points of color intensity. Considering the high efficiency of bentonite in aflatoxins B1 and B2 removal and despite the impact on red wine color, bentonite is a very good technological solution for aflatoxin removal in white and red wines.

scholarly journals Papain Covalently Immobilized on Chitosan–Clay Nanocomposite Films: Application in Synthetic and Real White Wine

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1622
Author(s):  
Ilaria Benucci ◽  
Claudio Lombardelli ◽  
Ilaria Cacciotti ◽  
Marco Esti
Keyword(s):  
Young Modulus ◽  
White Wine ◽  
Nanocomposite Materials ◽  
Covalent Immobilization ◽  
Protein Stabilization ◽  
Nanocomposite Films ◽  
Mechanical Resistance ◽  
Mechanical And Thermal Properties ◽  
Fixed Amount ◽  
Food Grade

Increasing attention has been recently paid to the development of nanocomposite materials for food application as new tool to enhance the mechanical and thermal properties of polymers. In this study, novel chitosan–clay nanocomposite films were produced as carriers for the covalent immobilization of papain, by using a fixed amount of chitosan (1% w/v) and a food-grade activated montmorillonite (Optigel, OPT) or a high-purity unmodified montmorillonite (SMP), in four different weight percentages with respect to chitosan (i.e., 20, 30, 50, 70% w/w). Both nanoclays (OPT and SMP) improved the mechanical properties of the obtained nanocomposites, and the OPT films showed the highest Young modulus and mechanical resistance (σmax). The nanocomposites were used as carriers for the covalent immobilization of papain, which was preliminarily characterized in model wine towards a synthetic substrate, showing the highest efficiency in the release of the reaction product when it was bound on OPT-30 and OPT-50 films. Finally, the latter biocatalyst (papain on OPT-50 film) was applied for the protein stabilization of two different unfined white wines, and it efficiently reduced both the haze potential and the protein content.

Interactions between protein fining agents and proanthocyanidins in white wine

2008 ◽  
Vol 106 (2) ◽  
pp. 536-544 ◽  
Author(s):  
F. Cosme ◽  
J.M. Ricardo-da-Silva ◽  
O. Laureano
Keyword(s):  
White Wine ◽  
Fining Agents
Sign in / Sign up

Export Citation Format

Share Document