Magnetised wine sparkles in less time, study
Food and drink researchers have found a new way to produce sparkling wine using magnetised yeast – a process that they said reduced the time taken to remove waste yeast from weeks to minutes.
The research will be published in the July 2014 issue of the Biochemical Engineering Journal.
The traditional method of producing sparkling wine – Méthode Champenoise – uses yeast to create a secondary fermentation to produce carbon dioxide (CO2) and the characteristic bubbles associated with sparkling wine.
To remove the spent yeast traditional methods use a rotate and elevate technique – often done by hand – to allow the yeast to settle in the bottle neck. The neck is then plunged into freezing liquid and the frozen waste yeast plug removed. The whole process can take up to 60 days.
However, a European research team at the University of Ljubljana have found a way to attach magnetic nanoparticles to the surface of yeast. With the use of magnets, waste yeast extraction takes just 15-20 minutes – over 4,000 times faster than the traditional method.
The researchers said the yeast remains unaltered by being magnetised, even after fermentation, and sensory tests suggested the wine’s bouquet, mouth feel, body, taste, bubble size and overall drinking experience was unaffected by the process.
“As the global population grows there is pressure on food and drink manufacturers to become more efficient,” said Dr David Brown, the Institution of Chemical Engineers (IChemE) Chief Executive. “Saving time and energy is fundamental to this if we are to maintain adequate food supply,” he said.
“Although many wine connoisseurs will stay loyal to traditional manufacturing methods, the inventiveness of chemical and biochemical engineers demonstrates that even wine production, which has been made for millennia, can be made more efficient with clever nanotechnology combined with simple magnets,” Dr Brown said.
Woolworths has launched a private label ‘ready-to-heat’ meal range called ‘Woolworths Simply’.
Almond Breeze is changing its packaging so it is the same no matter where it is sold in the world.
Chobani will extend its Australian product range with the launch of Chobani Flip.
The ‘Coopers Extra Strong 2017 Vintage Ale’ can be cellared similar to wine.
For the first time in its history, Four’N Twenty is selling a product which is not a pie.
Red Bull Australia is celebrating Formula 1 success story Daniel Ricciardo through a limited-edition...
AUTHORITIES are urging business to check the new minimum pay rates that apply from July 1, 2018.
KFC has a new Colonel Sanders with a famous sit-com actor playing the role for the fried chicken cha...