Coffee grounds and science – what do they have in common?

 

Surprisingly… quite a lot! A team of scientists from the University of Cincinnati, led by chemist Ashley Ross, has used coffee grounds to explore how they can improve the sensitivity of electrodes measuring brain activity.

 

 

Coffee-powered electrodes

 

The researchers presented their findings at the Spring Meeting of the American Chemical Society (ACS). According to their report, traditional microelectrodes used by neurobiologists to detect small neurochemical changes are typically made from carbon fiber.

Inspired by studies on using coffee grounds to produce porous carbon for energy storage, the team hypothesized that coffee could also serve as a conductive material in brain activity research. And at the same time… provide a great excuse for drinking even more coffee!

 

 

Research findings and ongoing questions

 

For their experiment, the researchers heated and processed used coffee grounds until only a powdery carbon material remained. They then further refined this material and coated it onto electrodes.

The results were striking—coffee-coated electrodes responded far more effectively to changes in dopamine levels compared to traditional carbon fiber electrodes. This improved sensitivity allowed for faster and more accurate neurochemical measurements.

 

What's next?

 

Although the study has shown promising results, there’s still much to explore. For instance, researchers do not yet know whether the type of coffee, roast level, or bean quality influence the process. The team’s next step is to determine which coffee makes the best electrode material.

So, coffee lovers, your favorite beverage might just play a role in future neuroscience breakthroughs!