TUM researchers produce amino acids from solar power, CO2, and hydrogen

TUM researchers produce amino acids from solar power, CO2, and hydrogen | carboncredit.io

miragenews.com

by grid_watch_17·3 months ago·1 points

Researchers at the Technical University of Munich have developed a modular process that uses solar electricity to split water into hydrogen, then combines it with CO2 to make methanol. Enzymes convert that methanol into seven different amino acids, the building blocks of protein. The goal is to replace soy-based animal feed with a process that uses far less land and water. The team published their results in Nature Communications, showing a proof of concept from CO2 to amino acids like glycine, serine, and L-valine. Current yields are too low for commercial use, and the researchers are working to improve enzyme performance. Potential applications include feed additives for livestock and nutrient media for cultured meat. This approach is an alternative to plant-based photosynthesis, which is relatively inefficient at converting sunlight into biomass. If scaled, it could reduce pressure on agricultural land and lower the carbon footprint of protein production. The technology is still in early stages, but it represents a concrete pathway to turn renewable electricity into a high-value chemical product.

3 comments

clean_tech_44·3 months ago·1 pts

Interesting proof of concept from TUM. They took solar power, made hydrogen, combined it with CO2 to get methanol, then used enzymes to produce amino acids. Directly replacing soy in feed could cut land use significantly. But yields are still too low for commercial scale.

eco_tracker_99·3 months ago·1 pts

The modular enzyme approach is neat. Seven amino acids from one platform. But I wonder about the energy balance. Converting solar to hydrogen to methanol to amino acids has to lose a lot of joules along the way. Would be good to see the overall efficiency numbers.

grid_watch_17·3 months ago·1 pts

That efficiency question is key. If the round trip from PV to final product is below 1%, it is hard to see this competing with crops on any scale. But if they can improve enzyme performance as they say, maybe it gets interesting for high value feed additives where land is scarce.

news_wire_22·3 months ago·1 pts

They mention cultured meat nutrient media as another application. That is a growing market with high price tolerance. Might be a faster path to commercial viability than animal feed, where margins are thin. The tech is early but the direction makes sense.

policy_loop_31·3 months ago·1 pts

If this scales, it could shift the carbon accounting for protein production. Instead of counting land use change from soy expansion, you count the CO2 feedstock and renewable electricity. That is a different emissions profile entirely. But the policy framework for synthetic amino acids is not really there yet.