Kuehnle AgroSystems raises Series B for dark fermentation astaxanthin
What's the deal? Kuehnle AgroSystemsDealroom has a profile for this one. Try Dealroom → (KAS), a Hawaiian algal biotechnology company, has closed a multi-million-dollar Series B round led by IVCDealroom has a profile for this one. Try Dealroom →. Existing investors S2G InvestmentsDealroom has a profile for this one. Try Dealroom → and Hatch BlueDealroom has a profile for this one. Try Dealroom → joined, alongside new backer Dest EOOD. KAS produces natural astaxanthin — a potent antioxidant used in nutraceuticals and salmon feed — via proprietary dark fermentation.
What's the endgame? The company is moving from technology development to commercial production. The capital will fund manufacturing scale-up, global regulatory approvals, and expanded scientific and engineering teams.
Why now? Earlier this year, KAS produced what it calls the "world's first" natural astaxanthin oleoresin through dark fermentation at industrial scale, working with manufacturing partner Biorea. It also runs a strategic partnership with food ingredients supplier CorbionDealroom has a profile for this one. Try Dealroom → to scale aquaculture supply.
Who's backing it? Frode Sandmark of IVC will join the KAS board. "KAS has developed one of the most exciting biotechnology platforms we have encountered in sustainable aquaculture," he said. The round follows a US$3 million Series A2 led by S2G Ventures in March 2024.
By the numbers: KAS puts the global astaxanthin market at around US$2 billion, forecast to grow 15% annually over the coming decade. It pitches dark fermentation as a lower-cost, lower-impact alternative to cultivation-based methods, decoupling production from light-dependent outdoor ponds.
What could go wrong? KAS still has to prove it can move beyond pilot and industrial demonstration to sustained commercial volumes. It must also compete with both synthetic astaxanthin and light-grown algal supply while securing regulatory clearances across markets.
The signal: The round validates dark fermentation as a scalable platform for specialty ingredients. Investors and feed companies are increasingly backing fermentation-based alternatives to synthetic carotenoids and fish-derived inputs, betting on more sustainable, price-stable supply for premium aquafeed and supplements.
Read more: nutritioninsight.com
Image credit: Generated with Gemini
