Brown Seaweed Extract Powder

Brown seaweed, here the kelp Laminaria japonica known in Japan as kombu and in China as haidai, is the only plant material behind this extract. The seaweed is extracted in water, concentrated and dried to a light brown powder. Other seaweeds are not blended into the material.

This brown seaweed extract is a 10:1 ratio extract with no marker assay and no alginate, fucoidan or iodine figure. The powder is milled to 80 mesh and disperses in water. Two other seaweed extract listings and a milled algae powder are separate products.

SKU: BOT-BEX-0230 Category: Botanical Extracts Tags: Bars & Bakery, Gummies & Chews, Kelp, Plant Extracts, Seaweed & Algae, Water Extracted

Laminaria japonica Thallus Source & Identity

The botanical entity is Laminaria japonica J.E.Areschoug, a large brown kelp of the order Laminariales that grows in cold coastal waters of northeast Asia and is widely farmed. The part used is the thallus, the broad, ribbon-like frond. Holdfasts and other seaweeds are not part of this brown seaweed extract. Some algae databases now place the kelp in the genus Saccharina, under the name S. japonica.

“Brown seaweed” is a broad commercial label. Ascophyllum nodosum and Fucus vesiculosus are brown seaweeds of the order Fucales, and wakame, Undaria pinnatifida, is another brown alga with a different structure. This product is the kelp.

Alginate, sulfated fucose polysaccharides, the sugar alcohol mannitol and laminarin are the constituent families of the frond, with iodine as a prominent mineral.

Brown Seaweed Extract vs Related Forms

Form	What It Is	Choose It When
10:1 Brown Seaweed Extract	Water extract of Laminaria japonica thallus, ratio-defined	The brief names brown seaweed with the kelp species fixed
Kelp Extract Powder	Water extract listed under the kelp name	The brief uses the term kelp
Seaweed Extract Powder	Water extract listed under the general seaweed name	The brief uses the general term seaweed
Brown Algae Powder	Dried, milled brown algae, no extraction	Whole-seaweed material with fibre is wanted

The 10:1 ratio measures seaweed going into the brown seaweed extract. It is not an alginate, fucoidan or iodine assay. Iodine in brown seaweed varies with species, harvest season and growing site, so the extract is defined by species, part, solvent and ratio rather than by a mineral figure.

The first three rows are ratio extracts listed under different names, and the last row is a milled whole seaweed. The listed name decides which row matches a buyer’s specification wording.

Typical Specifications

Specification Item	Product Information
Latin Name	Laminaria japonica
Plant Part	Seaweed & Algae
Processing	Water Extraction
Common Name	Brown Seaweed, Kelp, Kombu
Ingredient Type	Ratio Extract
Extract Ratio	10:1
Appearance	Light Brown powder
Solubility / Dispersibility	Water Dispersible
Quality Parameters
Moisture (LOD)	≤5.0%
Total Ash	≤5.0%
Particle Size	80 mesh
Heavy Metals	Lead ≤2 ppm · Arsenic ≤1 ppm · Cadmium ≤1 ppm · Mercury ≤0.1 ppm
Microbiology	TPC ≤1,000 cfu/g · Yeast & Mold ≤100 cfu/g · E. coli Negative · Salmonella Negative/25 g
Shelf Life	24 months in unopened original packaging, cool and dry storage

Application Areas

Capsules for a Marine Extract

Brown seaweed extract fills hard capsules after a flow check at 80 mesh. Salts and polysaccharides draw moisture from the air, so fill in a controlled-humidity room, keep the hopper covered and add a glidant if the powder bridges. A capsule shell also hides the marine smell.

Tablets with Moisture Barrier

Tablets from a salty, polysaccharide-rich extract soften quickly. For brown seaweed, use a dry binder, a late-added lubricant and a film coat that acts as a moisture barrier, then compare hardness at pressing and after a week of storage in the final pack.

Broth-Style Drink Sticks

A stick that mixes into hot water suits the umami character of kelp better than a sweet flavour does. Ginger, citrus and mild miso-style broth flavours cover the marine note. Test viscosity and taste at the planned dose, because the polysaccharides thicken the liquid.

Sachet Blends

A carrier of sugar or fibre holds the brown seaweed extract in sachets and sticks. Sieve the brown seaweed extract into the carrier before filling to stop swollen lumps forming at the surface, and check dose uniformity at the start, middle and end of the filling run.

Gummy Premixes

Alginate can interact with calcium and set a gel. Blend the extract into the dry sugar portion before cooking, avoid high-calcium ingredients unless gelling is intended, and check the gummy texture again after a week of storage.

Formulation Notes

Brown seaweed extract is a light brown powder with a marine, slightly iodine-like smell and a salty taste. In water it forms a brown, mildly viscous dispersion, because the polysaccharides hold water. Calcium and other multivalent ions can make it thicken or gel, so the hardness of the water is a real process variable.

Add the brown seaweed powder slowly under agitation, or wet it in a small volume of water before the full dilution. Dry blends need the brown seaweed extract dispersed in a carrier portion first, which a sieve does quickly. For brown seaweed, reseal the inner liner after every use and keep the opened drum away from steam, heat and wet areas.

Packaging & Commercial Supply

Essencefield supports product evaluation, formulation trials, commercial orders, and ongoing ingredient supply. Packaging, storage, and shipping arrangements are determined by product characteristics, order quantity, stability requirements, and destination-market needs.

Supply Item	General Information
Sample	Available upon request for formulation, testing, and supplier evaluation
Order Quantities	100 g · 1 kg · 5 kg · 25 kg · 100 kg · 500 kg · Bulk
Sample Lead Time	Typically 5–7 days after sample confirmation
Production Lead Time	Typically 15–30 days after order and specification confirmation
Packaging	Suitable protective inner packaging with bags, cartons, drums, or other appropriate outer packaging
Storage	Store in tightly sealed, suitable protective packaging in a cool, dry environment. Protect from moisture, heat, and direct sunlight. Specific storage conditions follow the approved product specification.
Documentation	COA · Product Specification · TDS · SDS · Applicable declarations (as applicable)

Final order quantities, lead times, packaging, documentation, and shipping arrangements are confirmed according to the selected product and commercial requirements.