Researchers from the University of Burgos have developed a method capable of detecting sulphur compounds, specifically mercaptans, in wines. This new methodology allows analysis to be carried out quickly and with high sensitivity. Furthermore, the proposed electrochemical method is characterized by its low cost and portability.
New and Innovative Aspects
Spain is the world's leading wine exporter by volume, with over 2,300 million liters exported in 2021, accounting for 25% of Europe's wine production. The presence of sulfur compounds in wine can cause unpleasant odors, such as the smell of rotten eggs, leading to customer complaints. While various methods have been developed to detect these compounds, the method developed by the University of Burgos stands out. It selectively quantifies mercaptans without direct contact with the sample.
Main Advantages of Use
This method offers several key advantages:
These characteristics position this methodology as an optimal choice for mercaptan detection in wine.
Specifications
Electrochemical measurements are conducted using a potentiostat connected to a CoPh-modified, screen-printed device pre-charged via adsorption in an electrolyte solution. Amperometric measurements are then taken in the headspace of a sealed cell. Once a constant current is achieved, a specified volume of EtSH or wine solution is added to the cell. The resulting current increase reflects the oxidation process on the electrode surface, with the working electrode's current depending on the EtSH concentration.
The method’s applicability has been validated through accuracy tests, analyzing wines in their original state and after the addition of a known amount of the analyte.
Applications
The primary application for these sensors is in the wine industry to detect mercaptans throughout the winemaking process. This methodology also shows promise for broader use across the agri-food industry.
Intellectual Property Status
Patent applied for: P202231013.
Current Development Status
Research and experimental phase.
Desired Business Relationships
The aim of the Technology Transfer Office (TTO) of the Universidad de Burgos is to promote Innovative technology through the research results transfer and the connections between the University and the new needs and requirements of society - we are the link between the University and the Industry.
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