Author Topic: scientific paper on widgets, mouth feel  (Read 646 times)

Offline bcrowell

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scientific paper on widgets, mouth feel
« on: March 04, 2011, 03:21:35 PM »
http://arxiv.org/abs/1103.0508

less technical summary here: http://www.technologyreview.com/blog/arxiv/

Here's the abstract:

"Bubble nucleation in stout beers
W. T. Lee, J. S. McKechnie, M. Devereux

    Abstract: Bubble nucleation in weakly supersaturated solutions of carbon dioxide - such as champagne, sparkling wines and carbonated beers - is well understood. Bubbles grow and detach from nucleation sites: gas pockets trapped within hollow cellulose fibres. This mechanism appears not to be active in stout beers that are supersaturated solutions of nitrogen and carbon dioxide. In their canned forms these beers require additional technology (widgets) to release the bubbles which will form the head of the beer. We extend the mathematical model of bubble nucleation in carbonated liquids to the case of two gasses and show that this nucleation mechanism is active in stout beers, though substantially slower than in carbonated beers and confirm this by observation. A rough calculation suggests that despite the slowness of the process, applying a coating of hollow porous fibres to the inside of a can or bottle could be a potential replacement for widgets."

Offline dak0415

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Re: scientific paper on widgets, mouth feel
« Reply #1 on: March 04, 2011, 03:24:51 PM »
applying a coating of hollow porous fibres to the inside of a can or bottle could be a potential replacement for widgets.?

Fuzzy beer?
Dave Koenig
Anything worth doing - is worth overdoing!