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Seaweed Extract is a natural marine-derived extract used primarily in agricultural formulations. Commercial agricultural grades are commonly produced from brown seaweed and may also be described as brown algae extract or concentrated seaweed extract. The composition varies according to seaweed source, extraction process, concentration, and downstream processing.
Seaweed Extract is available as powder, granules, and concentrated liquid preparations. Agricultural powder and granular grades generally range from dark brown to black-brown, while concentrated liquids are typically brown and viscous. Refined grades intended for cosmetic or selected food-related applications may have a lighter yellow to pale yellow appearance.
Typical agricultural applications include biostimulants, water-soluble fertilizers, foliar fertilizers, fertigation products, organic fertilizer blends, and seed-treatment formulations. Refined grades may also be considered for cosmetic and dietary supplement formulations according to their applicable quality specifications.
| Item | Specification |
|---|---|
| Product Name | Seaweed Extract |
| Alternative Description | Brown Algae Extract |
| Product Category | Natural marine-derived extract |
| Product Form | Powder, granules, or concentrated liquid |
| Agricultural Grade Appearance | Dark brown to black-brown powder or granules |
| Liquid Appearance | Brown viscous liquid |
| Refined Grade Appearance | Pale yellow to light yellow powder or liquid |
| Characteristic | Marine seaweed odor; powder may absorb moisture |
| Key Components | Alginates, mannitol, organic matter, amino acids |
| Applications | Biostimulants, fertilizers, fertigation, seed treatment, cosmetics, supplements |
| Quality Testing | Alginates, mannitol, organic matter, amino acids, moisture, pH, heavy metals, microbiological quality |
| Reference Standard | T/CAIAS 005-2026 |
| Documentation | COA available |
Seaweed Extract is a multi-component natural material rather than a single purified compound. Its analytical profile can include alginate-related components, mannitol, organic matter, amino acid fractions, and other naturally occurring seaweed constituents.
Important formulation characteristics include:
For water-soluble formulations, dissolution behavior, water quality, pH, concentration, and compatibility with other components should be considered. Because Seaweed Extract is compositionally complex, compatibility testing is particularly relevant when it is combined with concentrated mineral components or microbial ingredients.
In agricultural biostimulant formulations, Seaweed Extract can be incorporated as a marine-derived component in liquid, powder, or granular products. The appropriate grade should be selected according to the intended formulation and application method.
For water-soluble and foliar fertilizers, formulators should evaluate solubility, solution appearance, pH, concentration, and compatibility with other ingredients. Concentrated liquid grades may be suitable for liquid fertilizer systems, while powders can be used in dry blends or dissolved during manufacturing.
In drip irrigation and fertigation formulations, dissolution and filtration characteristics are important technical considerations. Products intended for these systems should be evaluated under the actual water conditions and dilution rates.
Seaweed Extract can also be combined with organic fertilizer components or incorporated into seed-treatment formulations. Compatibility should be confirmed under actual processing and storage conditions.
For cosmetic and dietary supplement applications, refined grades should be selected according to the quality and regulatory requirements of the intended product category.
Commercial Seaweed Extract is generally standardized using multiple compositional and physicochemical parameters rather than a single marker compound.
Routine quality-control parameters include:
When comparing commercial grades, buyers should consider seaweed source, extraction process, analytical methods, and the basis used for reporting individual components. A batch-specific COA can provide corresponding quality-control results.
Testing may reference T/CAIAS 005-2026 where applicable. Powder products should be stored in tightly sealed packaging under dry conditions because moisture absorption can affect handling and physical characteristics.
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