Study of 'Ouzo effect' may lead to design of improved drugs, cosmetics

February 18, 2008

Scientists studying the cloudy emulsions produced by anise-flavored liquors such as Ouzo have discovered new molecular insights into their formation, findings that could lead to the design of better commercial emulsions used in making pharmaceuticals, food products, cosmetics and other materials. Their study is scheduled for the Feb. 19 issue of ACS’ Langmuir.

Although transparent when bottled, Ouzo, Pastis, Pernod, and other popular anise-flavored alcoholic beverages form milky-white emulsions when diluted with water prior to drinking, a phenomenon commonly known as the “Ouzo effect.” These emulsions occur spontaneously and are stable for weeks and even months, a feature that is attractive to industry. However, scientists are unclear how these mixtures form and stabilize.

In the new study, Erik van der Linden and colleagues measured the stability of various emulsions prepared from commercial Pernod and compared the results to theoretical predictions of their formation. The scientists found that their experimental observations were often opposite the predicted behavior of the emulsions in the presence of various concentrations of oil, water, and alcohol components. “More knowledge of the parameters that determine the stability of these emulsions, besides interfacial tension, solubility, and density difference, might lead to better control of the emulsification process,” the study states.

Full text article:

Source: ACS

Explore further: Extremely tiny, hugely versatile nanoglobules

Related Stories

Extremely tiny, hugely versatile nanoglobules

October 27, 2015

Ludwig Maximilian University chemists have demonstrated a simple way to load nanoglobules with light-absorbing organic molecules. The method could serve as the basis for the formulation of innovative sunscreens.

SpaceX spacecraft splashdown, starring Space Station science

October 28, 2014

The return of the SpaceX Dragon brings with it plant samples, data that may impact your facial cream composition and validation of a new way of creating on Earth crystals that are used in our daily electronic devices. This ...

Nano-sand to improve lotions and cosmetics

July 5, 2010

South Australian researchers have invented and patented a new technology for delivering cosmetics and drugs to the skin. They are using nanoparticles of silica (essentially sand) to create longer lasting cosmetics and creams ...

Recommended for you

Can Paris pledges avert severe climate change?

November 26, 2015

More than 190 countries are meeting in Paris next week to create a durable framework for addressing climate change and to implement a process to reduce greenhouse gases over time. A key part of this agreement would be the ...


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.