The production of wines without sulfites seems possible thanks to the work carried out by the research group of the Rancho de la Merced del Instituto de Investigación y Formación Agraria y Pesquera de Andalucía (IFAPA).
In their research they have achieved a natural method to produce wines without sulfites, thanks to vineatrol that is an extract made from the pruning wood of the vineyard, which can replace sulfur dioxide in the production and conservation of wine.
In addition this extract is rich in stilbenes, bioactive compounds with demonstrated cardioprotective and anti-aging activity, among many other healthy qualities.
In their investigations they conclude that in the winemaking process, after replacing the sulfites with the extract of pruning wood, the odor, taste and appearance properties of the wine are not negatively affected. The quality parameters are not altered and the drink maintains the physical-chemical properties that it must have for its consumption.
Sulfur dioxide is a compound that is added as a preservative in many foods we consume, including wine. The European Community is increasingly tightening legislation to reduce sulfur in consumption, which is why more and more scientific studies are carried out to minimize the amounts added in food.
The research team is currently improving the extract, purifying it more and modifying its properties to optimize it in the production of white and rosé wines.