Microalgal Powders & Biomass

Few raw materials respond to demand the way microalgae do. A culture can double its mass in a day, which means supply follows the specification rather than the season: light, temperature, nutrients and harvest timing are dialled in until the biomass arriving at your door matches the data sheet. Eata Marisource supplies that biomass in the forms buyers actually work with — spray-dried and freeze-dried powders, milled flours and frozen concentrates — across freshwater strains such as Chlorella, Arthrospira (Spirulina) and Haematococcus, and marine strains including Nannochloropsis, Tetraselmis, Isochrysis and Schizochytrium.

What separates one lot from the next is rarely the species name on the invoice. It is the cultivation route, the cell-wall treatment, the drying temperature and the honesty of the analysis behind each figure. We put all four in writing, lot by lot, before anything ships.

Where the Biomass Comes From

Two cultivation routes dominate commercial production, and each leaves a fingerprint. Closed photobioreactors hold contamination low and composition steady from batch to batch, which is why pigment strains and research-grade material usually come from them. Open raceway ponds cost less per kilogram and suit robust strains grown at scale, provided the water chemistry and harvesting discipline keep impurities in check. Neither route is universally better — what matters is matching the system to the strain and the figure you care about on the specification sheet.

Strains We Work With

Pigment-Dense Cultures

Colour is chemistry you can see. Haematococcus pluvialis turns from green to deep red as its cells accumulate astaxanthin under stress, and the red biomass is what premium antioxidant, cosmetic and aquaculture-feed buyers specify — standardised from around 1% up to 10% astaxanthin depending on how far the concentration goes. Dunaliella salina does the same trick with beta-carotene in high-salinity ponds. For blue, Arthrospira supplies phycocyanin, quoted from 8% in whole biomass to highly purified extracts.

Intact Cells or Disrupted Biomass

A microalgal cell protects its contents well, and that protection cuts both ways. Chlorella wrapped in a tough three-layer wall passes through most processes untouched; disrupt that wall — by bead milling, high-pressure homogenisation or ultrasonication — and protein, pigments and lipids become dramatically more accessible, with breakage rates quoted at 95% or better for food and research grades. The counterweight is stability: opened cells oxidise faster and need gentler drying and better packaging. Tell us whether your process extracts from the cells or ships them whole, and we will match the treatment instead of selling you one grade for everything.

Wet Paste, Dried Powder, Milled Flour

What We Verify Before Release

Every lot leaves with its own certificate of analysis, and the tests behind it are the ones buyers in this category expect.

• Protein by Kjeldahl (N × 6.25), moisture, ash and pH.
• Marker compounds — phycocyanin, chlorophyll, astaxanthin, beta-carotene, EPA/DHA — by HPLC or UV-Vis against the agreed grade.
• Cell-wall breakage rate where disruption is part of the specification.
• Heavy metals (As, Pb, Cd, Hg) and, for cyanobacterial material, microcystin screening.
• Microbiology: total plate count, yeast and mould, coliforms, E. coli and Salmonella absent.
• Sensory checks on colour, odour and flow behaviour, with retained samples held for comparison.

Packaging & Supply Formats

Evaluation quantities go out in 1 kg foil pouches, nitrogen-flushed where the material is disrupted or pigment-rich. Production orders ship in 20–25 kg fibre drums or cartons with double liners, with jumbo bags available for feed-scale volumes. Consignments carry the lot certificate of analysis, specification sheet, SDS and origin documents, and neutral or private-label packing can be arranged.

Where These Materials Go to Work

• Aquaculture — hatchery and larval feeds, rotifer and artemia enrichment, shrimp and ornamental-fish nutrition.
• Animal & pet nutrition — protein and pigment supplementation across feed premixes.
• Food & beverage R&D — protein enrichment, natural colour and functional ingredient development.
• Nutraceutical & cosmetic research — astaxanthin, phycocyanin and chlorella-derived actives for formulation study.
• Industrial biotechnology — feedstock for biofuel, bioplastic and CO₂-utilisation research, plus wastewater-treatment strain studies.

Built to Your Specification

Strain, marker level, degree of cell disruption, drying route, mesh size and pack format are all adjustable, and blended or custom-cultivated material can be quoted once the target specification is clear. Send us the numbers you need to hit — or simply the application — and we will confirm the closest current grade, what a development batch would involve, and arrange evaluation material so your own results decide the next step.

For Research or Industrial Raw Materials, Not For Personal Medical Use!