Lightning-fast coffee: A new way to make drinks using lasers

do you like Coffee? Sometimes if you just drink a cup of coffee, you may not know what it is. cold beer, cold-brewed, sweeter and smoother coffee that takes at least 12 hours to extract from the beans. Or it took, as they created an extraction system supported by researchers from Germany. laser which makes c run about 300 times faster.

The cold brew method – which involves placing the ground beans in water and soaking – draws up to three times more caffeine from the beans by dripping in hot water than filtering. common in Japan, where cold beer up to 24 hours in infusion.

To speed up the process, the chemical research team at the University of Duisberg Essen (UDE) in Germany developed and demonstrated an ultra-fast cold extraction process using a laser that takes just a few minutes.

The technical part came from a method used to separate metallic solids in solvent solutions and create suspended nanoparticle solutions. The German team decided to use the same laser from a solution of ground coffee mixed with water, about 80,000 times per second, for three minutes – without raising the temperature by more than a few degrees.

The resulting solution was filtered and compared to a conventional 24-hour cold infusion. cold beer and also with a cup of coffee brewed with a hot drip filter.

The result of laser coffee was an acidity that was nearly the same as cold coffee brewed for 24 hours and significantly lower than hot coffee. The presence of trigonellin, an aroma-defining alkaloid, was highest in cold fermentation, followed by laser coffee and lowest in hot fermentation.

No substance was found in laser coffee that was not already found in hot or cold beverages. Full survey results published in the journal nature.

ARTICLE nature – https://doi.org/10.1038/s41538-022-00134-6.