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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Evaluation by SDS-Page and immunoblotting of residual antigenicity in gluten-treated wine: a preliminary study.

Hydrolyzed gluten could be a suitable alternative to animal proteins in the wine clarification process, but the residual proteins could constitute a risk for subjects suffering from celiac disease or allergy to cereals. The aim of this study was to investigate possible traces of gluten in treated wine and to assess its antigenicity in commercial products. The presence of gluten in treated wine was evaluated by an electrophoretic method [sodium dodecylsulfate-polyacrylamide gel electrophoresis (SDS-PAGE)] and its immunoreactivity was evaluated by immunoblotting. No traces of protein were found in untreated samples. A small quantity of protein was detected in treated wine but this produced no significant immunochemical reaction. In an experimental clarification process, a protein fraction was detectable in untreated samples and in the first stages of the clarification process. However, there was no significant gluten-associated immunochemical reaction in clarified wine samples, confirming strong binding between the clarifying agent and the phenolic fraction. In conclusion, the clarifying process strongly reduced the amount of protein material, at least in red wines. Under the most restrictive tests of the presence of gluten in the product, the predictable residue of gluten in wine was safe for celiac subjects. For allergic subjects the data are less conclusive because there is no known limit for allergic reactions, but clear labeling of the method of treating the wine should also protect this group of consumers.[1]

References

  1. Evaluation by SDS-Page and immunoblotting of residual antigenicity in gluten-treated wine: a preliminary study. Restani, P., Beretta, B., Ballabio, C., Galli, C.L., Bertelli, A.A. International journal of tissue reactions. (2002) [Pubmed]
 
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