13/08/2026
🦐 In part one, Marcin Weltrowski — co-owner of Resko and the ambassador for everything we do — told us how our shrimp shells travel to Japan, where their high astaxanthin content makes an exceptional ramen broth.
That pigment turned out to be the start of a much bigger story. So we sat back down with him. 👇
You said astaxanthin was the start of a much bigger story. What is it?
Everything we talked about with the Japanese broth — the colour, the character — comes down to astaxanthin. The more we understood it, the more we realised we were sitting on something valuable. So we started an R&D project to extract it — not to throw the shells away, not just to send them abroad, but to recover the astaxanthin itself, here, from our own shells.
For anyone who hasn't heard of it — what is astaxanthin?
A natural pigment — it's what gives our shrimp, salmon and flamingos their pink and red colour. But it's much more than a colour. In nature it acts as a powerful natural antioxidant, which is part of why it's so valued, and why it's sometimes called a kind of "superfood" ingredient — sought after well beyond the kitchen. And our wild cold-water shrimp are exceptionally rich in it, richer than farmed, thanks to their diet and slow growth in cold water.
What exactly are you developing?
The full name is a mouthful — "Development of an Innovative Process for Extracting Astaxanthin from Wild Shrimp Shells Using Supercritical CO₂." In plain terms: a modern, environmentally friendly way to extract astaxanthin from shrimp shells using supercritical carbon dioxide. Serious R&D, co-financed by European Funds — genuinely innovative work.
"Supercritical CO₂" sounds technical. Why does it matter?
Under the right pressure and temperature, carbon dioxide can pull the astaxanthin out of the shells — cleanly, efficiently, and gently enough to protect its quality. And crucially, without harmful solvents. Conventional methods often rely on chemicals we'd rather never use. Ours eliminates them, and uses less energy too. High efficiency, high quality, low environmental impact.
This material was prepared as part of the project "Resko Marketing Activities: Building Consumer Awareness Through the Promotion of Clean Label Shrimp on International Markets."
The project is co-financed by the European Maritime, Fisheries and Aquaculture Fund (EMFAF).
More information: www.rybactwo.gov.pl