Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(8), 79-86 | DOI: 10.11118/actaun201260080079

Procedure to reduce sulphite in wine with anion-exchange resin

Miroslav Horák, Pavel Híc, Eva Tománková, Josef Balík
Ústav posklizňové technologie zahradnických produktů, Mendelova univerzita v Brně, Valtická 337, 691 44 Lednice, Czech Republic

The aim of this experiment was to eliminate SO2 ions present in wine using the anion-exchanger resins. To compare the effectiveness, 2 following strongly basic anion-exchange resin were used. When activated, the sodium bicarbonate solution (activation solution I) is used to prevent parallel reduction of sulphites, tartates and malates, so the anion-exchange resins were activated in two-step activation. In the second step, it was immersed into a mixture of malic acid and tartaric acid (1:1). After the application of anex into wine, the content of total SO2 was reduced to 97-201 mg.L-1 (depending on the amount of anex added into the wine sample). According to our expectations, the variants with anion-exchange resin activated only with bicarbonate solution, the tartrates and malates were significantly reduced. If the anion-exchange resin was activated with a two-steps activation, the tartaric acid and malic acid were reduced in the range of ± 0.13 g.L-1. This phenomenon was strongly reflected at the anion-exchanger Aqua Osmotic 02. The changes in antioxidant content were not affected by the type of anion-exchange resin, the method of activation, or an amount of used anion-exchanger. The color parameters of wine, expressed by the L * a * b *, were not significantly affected by the effects of anion-exchange resin use.

Keywords: sulphites, sulfur dioxide, anion exchanger, wine
Grants and funding:

The authors gratefully acknowledge financial support by the Internal Grant Agency of MENDELU (project No. 5/2011/591).

Received: September 13, 2012; Prepublished online: March 29, 2013; Published: March 30, 2013  Show citation

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Horák, M., Híc, P., Tománková, E., & Balík, J. (2012). Procedure to reduce sulphite in wine with anion-exchange resin. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis60(8), 79-86. doi: 10.11118/actaun201260080079
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