Effervescence Predictor 2.0, "the crown cap that breathes"

Jun 28, 2021 • 2 mins
Team Grappers

You can now assess the amount of bubble loss in a champagne during its ageing! In collaboration with physicist Gérard Liger-Belair, the international company PE.DI has developed the Effervescence Predictor app which allows users to predict the pressure in their wines and the oxygen intake.

La société PE.DI

PE.DI is a family business founded by wife and husband team, Tiziana Perone and Alberto Di Crescenzo, in 1982. The name "PE.DI" comes from their family names: Perone (PE) and Di Crescenzo (DI).

The company is specialised in special closures for botting with a focus on the production of products for second fermentation. PE.DI strives to come up with fast and flexible solutions to optimise its customers’ use of its products.

"From Passion to Innovation"
PE.DI motto

Physicist Gérard Liger-Belair, science at the service of bubbles

Gérard Liger-Belair, a professor specialising in the physicochemistry of effervescence at the University of Reims Champagne-Ardenne, has not always been involved in the wine industry. An oceanographer in another life, he had to abandon the salty ocean depths to dive into the sparkling world of bubbles. A true enthusiast, Gérard Liger-Belair also took up microphotography, capturing the bubbles for their "purely aesthetic quality".

A few years later, in 2012, he created the Effervescence, Champagne & Applications team, dedicated to the study of processes associated with the dynamics of bubbles and mousses in liquids containing dissolved gases.

The Effervescence Predictor 2.0 app

In 2019, PE.DI launched Effervescence Predictor, the app to control the gas exchange of wines ageing "sur lattes". One year later, and following this ingenious collaboration, a new version of the app was born: Effervescence Predictor 2.0 (free and available on App Store and Google Play).

During the secondary fermentation and the ageing "sur lattes", a crown cap is used to seal the bottles. Effervescence Predictor then predicts the CO2 pressure in the wine and the effervescence's longevity. To do this, the user must enter certain data into the app, e.g., the quantity of sugar in the bottle at the time of bottling, the bottle size, the diameter of the bottle neck and the permeability of the selected PE.DI cap’s liner. The new version of the app now enables users to calibrate the oxygen intake, a major factor in the evolution of the wine's aromas.

The PE.DI range of caps and liners thus offers the winemaker a valuable tool for adjusting his/her wines according to the vintage and the desired style.