Classification
Product TypeIngredient
Product FormPowder
Industry PositionFood Additive (Hydrocolloid)
Market
Alginic acid (INS 400; EU E400) is a seaweed-derived hydrocolloid used globally as a stabilizer, thickener, gelling agent and emulsifier under food additive specifications published by JECFA and Codex. Feedstock availability is tied to brown seaweeds (Phaeophyceae), with large-scale aquaculture production concentrated in East Asia—particularly China, alongside significant output in the Republic of Korea and Japan. International trade is commonly classified under HS 391310 (alginic acid, its salts and esters), with recent leading exporters including France, Japan, Chile, the Netherlands and Germany and major import demand centered in the United States, Japan and large EU member states. Market dynamics are strongly shaped by regulatory compliance (identity/purity specifications), viscosity/functional performance requirements, and substitution with other hydrocolloids depending on application and price.
Major Producing Countries- 중국Dominant producer of farmed brown seaweeds (e.g., Laminaria japonica and Undaria pinnatifida) in FAO yearbook aquaculture statistics; key upstream base for alginate extraction.
- 대한민국Major producer of farmed brown seaweeds (including wakame/Undaria and kelp/Laminaria) in FAO yearbook aquaculture statistics.
- 일본Significant brown seaweed aquaculture producer (kelp and wakame) in FAO yearbook aquaculture statistics; long-established food and ingredient applications.
- 북한Reported as a substantial producer of farmed brown seaweeds (kelp) in FAO yearbook aquaculture statistics.
- 러시아Reported brown seaweed aquaculture production in FAO yearbook statistics; relevance depends on downstream extraction and trade linkages.
Major Exporting Countries- 프랑스Among the leading exporters by value for HS 391310 (alginic acid, its salts and esters) in recent UN Comtrade/WITS extracts.
- 일본Among the leading exporters by value for HS 391310 in recent UN Comtrade/WITS extracts.
- 칠레Among the leading exporters by value for HS 391310 in recent UN Comtrade/WITS extracts; also a source of brown seaweed biomass for industrial processing.
- 네덜란드Among the leading exporters by value for HS 391310 in recent UN Comtrade/WITS extracts; may reflect re-export and EU distribution roles.
- 독일Among the leading exporters by value for HS 391310 in recent UN Comtrade/WITS extracts; may include re-export and distribution within Europe.
Major Importing Countries- 미국Among the leading importers by value for HS 391310 in recent UN Comtrade/WITS extracts; major end-use market across food and other industries.
- 일본Among the leading importers by value for HS 391310 in recent UN Comtrade/WITS extracts; large domestic food and industrial demand base.
- 이탈리아Among the leading importers by value for HS 391310 in recent UN Comtrade/WITS extracts; significant food manufacturing demand.
- 독일Among the leading importers by value for HS 391310 in recent UN Comtrade/WITS extracts; significant processing and distribution hub.
- 태국Among the leading importers by value for HS 391310 in recent UN Comtrade/WITS extracts; demand linked to processed food manufacturing.
Specification
Major VarietiesAlginic acid (INS 400 / E400), Sodium alginate (INS 401 / E401), Potassium alginate (INS 402 / E402), Ammonium alginate (INS 403 / E403), Calcium alginate (INS 404 / E404), Propylene glycol alginate (INS 405 / E405)
Physical Attributes- White to yellowish-brown filamentous, grainy, granular or powdered forms (food additive specifications).
- Hydrophilic colloid; alginic acid is generally insoluble in water, while alkali metal salts (alginates) are used for water-soluble thickening.
Compositional Metrics- Linear copolymer of β-1,4-linked D-mannuronic acid and α-1,4-linked L-guluronic acid residues (JECFA identity).
- Typical average molecular-weight range reported in JECFA specifications (used as a functional-performance proxy alongside viscosity testing).
- Common commercial specification parameters include solution viscosity (under defined conditions), pH, loss on drying/moisture, ash, and limits for heavy metals (per food additive compendia and regional regulations).
Grades- Food additive grade meeting JECFA/FAO Combined Compendium specifications (INS 400) and/or Food Chemicals Codex (FCC) specifications where referenced by regulators.
- Regional compliance: EU authorization as E 400 (and related alginates E 401–E 404) and U.S. use under 21 CFR GRAS listings (alginic acid and certain alginate salts).
Packaging- Moisture-barrier packaging is standard (e.g., lined bags or drums) to prevent hygroscopic caking and viscosity drift during storage and distribution.
- Lot traceability and certificate-of-analysis documentation commonly accompany food additive shipments for regulatory and buyer assurance.
ProcessingProvides thickening and stabilization via hydration; some alginate systems gel in the presence of calcium ions (application-dependent).Functional performance depends on polymer composition and molecular weight distribution, often managed through grade selection and blending.
Supply Chain
Value Chain- Brown seaweed cultivation/harvest (Phaeophyceae) → washing/cleaning → drying and milling → alkaline extraction to solubilize alginate → filtration/clarification → acid precipitation of alginic acid → purification → drying and milling → grading/blending and packaging.
Demand Drivers- Processed food texture and stability requirements (thickening, emulsification support, and gel/structure formation in specific systems).
- Regulated additive status and standardized specifications (Codex/JECFA and regional frameworks) enabling cross-border sourcing.
- Formulation needs in acid and dairy-adjacent systems and in beverage/clarification applications where permitted (application- and jurisdiction-dependent).
Temperature- Dry storage with humidity control is critical; moisture uptake can cause caking and alter functional performance (e.g., hydration and viscosity behavior).
Shelf Life- Generally long shelf life in dry form when stored sealed and protected from moisture, heat and contamination; shelf-life specifications are supplier-grade specific.
Risks
Climate HighAlginic acid supply is ultimately dependent on brown seaweed biomass; climate-driven marine shocks (marine heatwaves, severe storms, harmful algal blooms) can reduce kelp availability and disrupt harvesting and drying operations. Because large-scale brown seaweed aquaculture production is concentrated in a limited set of East Asian countries, regional production setbacks can cascade into global availability and price volatility.Diversify qualified supply across multiple regions and producers; maintain safety stocks for critical SKUs; monitor marine climate indicators and harvest outlooks in key origin regions.
Food Safety MediumSeaweed-derived inputs can carry contaminant risks (e.g., heavy metals) that require strict control through specifications, purification and testing; non-compliance can trigger rejections, recalls, or loss of customer approvals.Specify compendial compliance (e.g., JECFA/FCC where applicable), require robust COAs and traceability, and validate supplier QA systems with periodic audits and third-party testing.
Regulatory Compliance MediumPermitted uses, labeling (INS/E-number), and specification expectations differ across jurisdictions; reformulation or documentation gaps can delay imports or limit application flexibility.Maintain a regulatory matrix per target market (Codex, EU, U.S. and key importers) and keep additive identity/specification documentation aligned with buyer and authority requirements.
Trade Policy MediumCross-border supply can be affected by tariff changes, customs classification disputes (HS 391310 scope), and logistics disruptions that increase lead times and costs for bulky industrial powders.Confirm HS classification with customs brokers, qualify alternative lanes and suppliers, and use contractual clauses for force majeure and lead-time variability.
Sustainability- Marine ecosystem and biodiversity considerations for wild brown seaweed harvesting, including local habitat impacts and harvest management.
- Climate-related variability affecting kelp forest biomass and farmed seaweed yields (ocean warming, storms, marine heatwaves) with knock-on effects for alginate feedstock availability.
- Processing footprint considerations (alkaline extraction and wastewater management) and the need for compliant effluent treatment in manufacturing regions.
Labor & Social- Occupational health and safety risks in seaweed cultivation/harvesting and coastal processing (manual handling, maritime hazards).
- Traceability expectations in global ingredient supply chains, including supplier audits and documentation for responsible sourcing.
FAQ
What is alginic acid (INS 400 / E400) and where does it come from?Alginic acid (INS 400; E400) is a hydrophilic polysaccharide obtained from brown seaweeds (Phaeophyceae) by alkaline extraction, and it is used in foods as a stabilizer, thickener, gelling agent and emulsifier under Codex/JECFA food additive specifications.
Which countries are most important for brown seaweed supply relevant to alginic acid?FAO aquaculture yearbook data show brown seaweed farming is heavily concentrated in East Asia, with China as the dominant producer and substantial production in the Republic of Korea and Japan; this concentration matters because brown seaweeds are the main upstream feedstock for alginic acid and alginates.
How is alginic acid typically classified in international trade statistics?In many customs and trade datasets, alginic acid and related products are tracked under HS 391310, described as “alginic acid, its salts and esters” (e.g., in U.S. HTS and UN Comtrade/WITS reporting).
Which countries are currently major exporters and importers under HS 391310?UN Comtrade data presented via the World Bank WITS tool (for 2024) lists leading exporters such as France, Japan, Chile, the Netherlands and Germany, while major import demand includes the United States, Japan, Italy, Germany and Thailand (the European Union also appears as a large aggregate importer in the same dataset).