Brewery waste can be repurposed to make nanoparticles that can fight bacteria

By: Alcina Johnson Sudagar, Washington University in St. Louis, The Conversation

Outlets: The Conversation

Published: November 6, 2025

Words: 1,475

Last Updated: 2 weeks, 5 days ago

By Alcina Johnson Sudagar, Washington University in St. Louis

Modern beer production is a US$117 billion business in the United States, with brewers producing over 170 million barrels of beer per year. The brewing process is time- and energy-intensive, and each step generates large amounts of waste.

Solid components such as used grains and yeast from this waste end up in landfills, where harmful compounds can leach into the soil. Brewing …

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