Laminarin is the main storage polysaccharide of many brown algae, where it serves as an energy reserve analogous to starch in terrestrial plants.
In humans, this β-glucan is attracting growing interest for its prebiotic, antioxidant and immunomodulatory properties. It is being investigated for applications in gut health, functional foods and even cancer prevention.
Brown algae are storing much more than carbon!
Laminarin market size is estimated at USD 10.50 million in 2025 and is projected to reach USD 88.60 million by 2033, growing at a CAGR (compound annual growth rate) of 30.55% from 2026 to 2033. Demand is largely driven by the expansion of functional foods and natural ingredients.
Overall, laminarin remains an emerging market with significant opportunities and increasing scientific interest.