Seaweed Powders & Biomass

Put the same question to five different buyers and "seaweed powder" will mean five different things. A feed mill wants a coarse kelp meal that flows through its pellet line. A seasoning house asks for a fine 120-mesh laver flour with a deep savoury note. A biostimulant formulator specifies Ascophyllum nodosum graded for extraction, while a hydrocolloid plant orders dried Gracilaria or Kappaphycus chips by the container. Eata Marisource supplies all of them — brown, red and green — as whole dried biomass, cut fractions and fine-milled flours, each defined by the parameters you set rather than by whatever happens to leave the dryer that week.

Every lot is documented before it ships: moisture, ash, particle-size distribution and, where the application demands it, iodine level, polysaccharide content and contaminant screening. The result is a marine raw material that behaves the same way in your process this quarter as it did the last one.

Brown Seaweed Powders

The workhorse group, and the one with the widest chemistry. Kelps such as Ascophyllum nodosum, Laminaria/Saccharina japonica and Sargassum carry alginic acid (commonly 15–30%), fucoidan, laminarin and mannitol alongside one of the highest natural iodine loads of any raw material — valuable in feed and biostimulant work, and worth capping when the target market sets a limit. We supply whole-blade material for extraction houses as well as graded meals for premix, aquaculture and soil-product lines, and we can quote iodine and alginic acid figures on the specification sheet so formulators know exactly what is arriving.

Red Seaweed Powders

Reds are bought for two very different reasons. Porphyra/Pyropia (nori, laver) grades are protein-rich — often 20% or more on dry matter — with the umami character that seasoning and snack developers keep coming back for. Gracilaria, Eucheuma denticulatum and Kappaphycus alvarezii, on the other hand, are the commercial backbone of the carrageenan and agar industries, and extraction plants buy them as dried chips or as milled raw material with tight controls on foreign matter and salt content. Both routes are open to you; tell us which side of the process you sit on.

Green Seaweed Powders

Ulva lactuca — sea lettuce — and its tubular relatives are the most underrated members of the range. Their signature polysaccharide, ulvan, is a sulphated rhamnose-rich polymer that has attracted growing research interest, while the whole biomass itself earns its keep in aquaculture diets (abalone and shrimp feed in particular), in feed palatability systems, and as a natural colour and mineral contributor in personal-care formulations. Typical feed grades run at protein ≥12% and seaweed polysaccharide ≥20%, milled to the mesh you name.

From Whole Biomass to Fine Flour

One species can serve half a dozen applications depending on where the mill is set. The table below shows the formats we run most often; intermediate cuts and custom screen sizes sit anywhere along the same line.

What We Check Before Release

Marine raw materials live or die on consistency, so the testing happens before the goods leave, not after they arrive at your dock.

• Moisture (loss on drying) and water activity on request.
• Total ash and acid-insoluble ash, which track sand and salt ingress during handling.
• Particle-size distribution confirmed against the agreed mesh window.
• Heavy-metal screening — arsenic, lead, cadmium, mercury — with iodine quantified where the application requires it.
• Microbiology: total plate count, coliforms, yeasts and moulds, Salmonella absent.
• A certificate of analysis for the exact lot you receive, plus retained samples held against future comparison.

Packaging & Supply Formats

Trial quantities ship in 1 kg foil pouches so your lab can run its first tests without a production commitment. Commercial volumes are packed in 20–25 kg PE-lined bags or cartons, fibre drums, or 500–800 kg jumbo bags for container loads. Neutral packaging is standard; private-label packing is available, and every consignment leaves with its certificate of analysis, specification sheet, SDS and, where needed, certificate of origin.

Where These Materials Go to Work

• Agriculture — raw material for kelp-meal fertilizers, soil conditioners and crop biostimulant blends.
• Animal nutrition & aquaculture — feed attractants, pellet binders, mineral carriers and pigment sources for farmed aquatic species.
• Hydrocolloid manufacturing — dried brown and red seaweed feedstock for alginate, carrageenan and agar production.
• Food & beverage R&D — nori and sea-lettuce flours for seasoning, baking and savoury systems.
• Personal care — marine powders for masks, scrubs, bath products and mineral-rich formulations.
• Research laboratories — characterised biomass for polysaccharide, ulvan and fucoidan studies.

Built to Your Specification

If none of the standard grades matches the parameter you are working to, that is a conversation rather than a dead end. Species selection, colour-group blends, grind size, drying route, iodine windows, mesh cuts and pack formats can all be adjusted, and organic or conventional material can be quoted depending on origin and season. Send us the specification — or even just the application — and we will come back with the closest match, the data behind it, and a small evaluation pack so your team can judge the material before any production quantity is discussed.

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