Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Wine without sulphur

22.01.2013
The SO2SAY research project reduces sulphur dioxide in red wine to a minimum. Greater enjoyment for allergy sufferers. Detection threshold undercut.
Sulphur dioxide gives food products a longer shelf life, can however provoke unwanted effects, in particular in the case of allergy sufferers. In the framework of the “SO2SAY” research project, ttz Bremerhaven and its project partners developed a process for the stabilization of red wine which is not based on sulphur dioxide, but instead on natural extracts. Thus there is no need to state “Contains sulphites”.

The use of sulphur dioxide (SO2) is common practice in the food industry. The SO2 extends the shelf life of products such as wine, potatoes or dried fruits. It prevents secondary fermentation and has an anti-oxidant effect, so that the enzymatic browning, as is seen with sliced apple, is reduced. But apart from these positive effects, the sulphurization of food products also hides dangers such as asthma attacks. Wine and food producers are desperately searching for alternatives, as even just one glass of wine or 10 mg of SO2 per litre can trigger an allergic attack.
Within SO2SAY, an EU-funded project, the partners developed a strategy to replace sulphur dioxide and its salts in food products, including wine. The challenges lie in achieving a comparable shelf life in food products which are free of sulphites and in avoiding changes in smell, taste and appearance. Corresponding storage tests will run until the spring of 2013.

Preservation with original wine extracts – “Contains no sulphites”

SO2SAY developed a process for the stabilization of red wine which dispenses as far as possible with sulphur dioxide. The objective is thus to preserve the sensory acceptance of the wine. In place of SO2, extracts, which occur naturally in wine, give it its shelf life. There can be up to 160 milligrams of sulphur dioxide per litre in commercial quality wines. The SO2SAY wine reduces this amount by over 95 percent. Allergy sufferers can therefore take a deep breath and enjoy their wine again. In addition, the percentage lies below the official detection threshold so that the wine counts as SO2-free and must not be labelled with “Contains sulphites”. In the framework of the “clean label” discussion, the process is therefore particularly interesting for quality producers and demanding customers. The tasty prototype was produced under scientific supervision by Biurko Gorri, Spanish project partner and vineyard.
It’s the taste that counts

Apart from price, taste is the main criterion for the (re)sale of a wine. In sensory tasting sessions with a representative number of testers in Great Britain, Spain and Germany, the new wine was judged as equally good in a comparison with high-quality reference wines. The wine was filled from the barrel into bottles in May 2012 and is currently continuing to mature there. At the next meeting of the nine project partners in January 2013, a few of the bottles were opened and put to the acid test. If the SO2SAY wine passes the final analytical tests four months later too, then from a technical standpoint nothing more will stand in the way of using the process. Product approval and the name under which the wine will be sold are currently being clarified by the partners.
Knowledge transfer from basic research to application

The SO2SAY project is a model example for the successful transfer of knowledge from basic research via applied research to application. Together with the Dutch University of Wageningen, ttz Bremerhaven identified a special plant extract which makes it possible to dispense almost completely with sulphur dioxide in wine, since this extract, which is a natural component of wine, fulfils the same purpose as the SO2: It has an antimicrobial, antioxidant and inactivating effect on enzymes, which means, amongst others, that the browning of the wine is prevented.

Nine partners from four European countries and Israel participated in SO2SAY. The EU-financed project (FP7) was coordinated by ttz Bremerhaven.

ttz Bremerhaven is an independent research institute which performs application-based research and development. Under the umbrella of ttz Bremerhaven, an international team of experts is working in the fields of food, environment and health. http://www.ttz-bremerhaven.de
Contact:
Christian Colmer
Head of Communication and Media
ttz Bremerhaven
Fischkai 1
D-27572 Bremerhaven (Germany)
Phone: +49 (0)471 48 32 -124
Fax: +49 (0)471 48 32 - 129
ccolmer@ttz-bremerhaven.de
http://www.ttz-bremerhaven.de
http://www.facebook.com/ttzBremerhaven
http://www.twitter.com/ttzBremerhaven
http://www.xing.com/companies/ttzbremerhaven

Christian Colmer | idw
Further information:
http://www.ttz-bremerhaven.de

More articles from Life Sciences:

nachricht Toward a 'smart' patch that automatically delivers insulin when needed
18.01.2017 | American Chemical Society

nachricht 127 at one blow...
18.01.2017 | Stiftung Zoologisches Forschungsmuseum Alexander Koenig, Leibniz-Institut für Biodiversität der Tiere

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

A big nano boost for solar cells

18.01.2017 | Power and Electrical Engineering

Glass's off-kilter harmonies

18.01.2017 | Materials Sciences

Toward a 'smart' patch that automatically delivers insulin when needed

18.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>