Feeds

Argentina: home of Bavarian lager

It’s in the DNA

Next gen security for virtualised datacentres

Beer has been around for millennia, but lager is more recent, invented in Germany about 600 years ago. Its secret is a particular yeast, and now American scientists believe they’ve identified an ancestor of that yeast – in Argentina.

Lager brewers use a yeast called Saccharomyces pastorianus which ferments at lower temperatures than the long-domesticated ale yeast S. cerevisiae (also used in bread and wine).

According to the LA Times, the S. pastorianus yeast was identified as a hybrid back in the 1980s, but its parentage has remained a mystery.

After a five-year search, University of Wisconsin-Madison geneticist Chris Todd Hittinger discovered the wild yeast S. eubayanus growing on beech trees in Argentina.

The DNA of the wild yeast shows a 99.5 percent match with the non-ale DNA present in lager yeast, the researchers say. That offers up a new mystery: while lager is generally believed to have been invented in the 1400s, Europeans didn’t reach continental America until 1492. This suggests either that the wild yeast might also exist independently in Europe (although it hasn’t yet been found there); or that the South American yeast arrived in Europe by some other route; or that lager was invented later than thought.

In its native environment, the wild S. pastorianus grows on galls on beech trees – outgrowths caused by insect larvae. Those galls are high in sugar to feed the yeast, and native Patagonians used to make a fermented beverage from the galls.

The work is published in the Proceedings of the National Academy of Sciences (abstract here). ®

Secure remote control for conventional and virtual desktops

More from The Register

next story
Our LOHAN spaceplane ballocket Kickstarter climbs through £8000
Through 25 per cent but more is needed: Get your UNIQUE rewards!
LOHAN tunes into ultra long range radio
And verily, Vultures shall speak status unto distant receivers
NASA to reformat Opportunity rover's memory from 125 million miles away
Interplanetary admins will back up data and get to work
SpaceX prototype rocket EXPLODES over Texas. 'Tricky' biz, says Elon Musk
No injuries or near injuries. Flight stayed in designated area
EOS, Lockheed to track space junk from Oz
WA facility gets laser-eyes out of the fog
Volcanic eruption in Iceland triggers CODE RED aviation warning
Lava-spitting Bárðarbunga prompts action from Met Office
LOHAN Kickstarter breaks NINETEEN THOUSAND of your EARTH POUNDS
That's right, OVER 9,000 beer tokens - and counting
prev story

Whitepapers

Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Advanced data protection for your virtualized environments
Find a natural fit for optimizing protection for the often resource-constrained data protection process found in virtual environments.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.