SciTransfer
POLYMEER · Project

Turning Brewery Waste into High-Performance Bio-Plastics for Automotive and Agriculture

manufacturingTestedTRL 4

Imagine taking the soggy grain left over from beer brewing and turning it into a sturdy plastic. Instead of drying the waste, which uses too much energy, this process separates the proteins and fibers while they are still wet. These ingredients are then rebuilt into materials that can replace oil-based plastics in cars and farms.

By the numbers
40 million tonnes
Annual global brewers spent grain production
8 million tonnes
Annual brewers spent grain production in Europe
20%
Portion of brewers spent grain currently landfilled
85%
Share of brewing residues represented by spent grain
The business problem

What needed solving

Industries rely on fossil-based plastics for automotive textiles and agricultural films because bio-plastics often lack the necessary UV resistance or durability. Meanwhile, millions of tonnes of brewery waste are landfilled or underutilized.

The solution

What was built

A wet-fractionation process to extract proteins and fibers from spent grain and a library of bio-based polymers and copolymers.

Audience

Who needs this

Automotive interior manufacturersAgricultural plastic film producersIndustrial packaging companiesLarge-scale commercial breweries
Business applications

Who can put this to work

Agriculture
any
Target: Agricultural film manufacturer

If you are a film manufacturer dealing with plastic pollution in soil — this project developed biodegradable mulch films that break down naturally. This allows farmers to protect crops without leaving permanent plastic waste in the ground.

Automotive
enterprise
Target: Car interior textile supplier

If you are a textile supplier dealing with strict sustainability mandates for car interiors — this project developed bio-based polyesters with improved UV resistance. These materials replace fossil-based fabrics while remaining recyclable.

Packaging
mid-size
Target: Industrial brewery or packaging plant

If you are a brewery dealing with the 8 million tonnes of spent grain produced in Europe — this project developed recyclable tertiary packaging films. This allows breweries to create a local circular loop by using their own waste for their shipping materials.

Frequently asked

Quick answers

What is the expected cost or price of these materials?

Based on available project data, specific pricing is not provided, but the project includes techno-economic studies to evaluate the economic feasibility of large-scale production.

At what scale is the technology currently available?

The project is moving from lab-scale research to pilot validation. Early scalability checks have already confirmed compatibility for upcoming pilot trials.

How can I license the IP or the technology?

Based on available project data, licensing terms are not yet defined, but the project aims for a market launch within 3-5 years after completion.

What regulations does this address?

The project focuses on the shift toward a climate-neutral materials economy and addresses the need for biodegradable and recyclable alternatives to fossil-based plastics.

When will the products be ready for commercial use?

The project runs until August 2028, with a target for market launch within 3-5 years after the project ends.

Consortium

Who built it

The consortium is highly commercially oriented, with a 50% industry ratio consisting of 7 industrial partners, 7 of whom are SMEs. This balance between 3 universities and 3 research centers ensures that the transition from lab-scale to pilot validation is supported by actual market players across 8 European countries.

How to reach the team

Contact Universita Degli Studi di Perugia

Next steps

Talk to the team behind this work.

Contact us to connect with the POLYMEER consortium for pilot partnerships.

More in Manufacturing & Industry 4.0
See all Manufacturing & Industry 4.0 projects