Sodium Alginate - Food Grade Thickener

Sodium Alginate Food Grade BMSG (Alginic Acid Sodium Salt) – Thickening & Gelling Agent (E401 / INS 401)

Sodium Alginate Food Grade (chemically known as Alginic Acid Sodium Salt, international code E401 / INS 401) manufactured by Bright Moon Seaweed Group (BMSG) is a natural hydrophilic polysaccharide extracted from brown seaweed. Compliant with E401 / FCC / USP / GB technical standards and available across a wide viscosity spectrum from 20 cP to over 1000 cP, this versatile E401 food additive delivers exceptional water-binding thickening and thermo-irreversible Ca²⁺ cross-linking gelation for popping boba, ice cream, instant noodles, beer foam stabilization, frozen seafood glazing, and cosmetic formulations.

Technical Specifications – Sodium Alginate BMSG (E401 / INS 401)

Key Technological Properties & Functional Advantages of Sodium Alginate BMSG

• Superior Hydration & Thickening Performance: As a powerful hydrophilic biopolymer, Alginic Acid Sodium Salt dissolves thoroughly in both cold and warm water to form a stable viscous solution, binding free water, preventing syneresis, increasing product volume, and inhibiting moisture loss.
• Thermo-Irreversible Ca²⁺ Cross-Linking Gelation: Upon ion-exchange reaction with polyvalent cations (especially Calcium Ca²⁺), sodium alginate chains rapidly cross-link into a three-dimensional "egg-box model" hydrogel network. This gel exhibits high thermal stability and does not melt during heating, baking, or retort pasteurization.
• Customizable Crisp-to-Elastic Texture via M/G Ratio: High-G grades (rich in L-guluronic acid) yield firm, crisp, and rigid gels with sharp structural definition; whereas High-M grades (rich in D-mannuronic acid) produce soft, elastic, and flexible gel matrices.
• Protective Edible Bio-Film Formation: Forms a transparent, oxygen-selective calcium alginate film over food surfaces that retards lipid oxidation, prevents rancidity, and locks in natural moisture.

Practical Industrial Applications in Food, Beverage & Life Sciences

With its broad viscosity spectrum (20 cP to ≥ 1000 cP) and particle size options up to 200 mesh, Sodium Alginate Food Grade (E401) provides targeted solutions across multiple industries:

• Imitation Foods, Jellies & Popping Boba: Essential for spherification and interfacial gelation in popping boba pearls, fruit jellies, artificial caviar, seaweed noodles, and heat-stable vegetarian sausage casings.
• Ice Cream & Frozen Desserts: Functions as a primary stabilizer that inhibits ice crystal and lactose crystal growth during freezing, emulsifies fat globules, and imparts a smooth, creamy texture with high meltdown resistance.
• Bakery & Instant Noodles: Enhances dough elasticity and tensile strength in instant and dried noodles (reducing breakage and lowering oil absorption during frying), while improving moisture retention and crumb softness in bread.
• Frozen Seafood & Meat Preservation: Creates a protective bio-glaze or calcium alginate coating that isolates meat and fish fillets from atmospheric air, preventing freezer burn, dehydration, and lipid oxidation during cold storage.
• Brewing, Beverages & Emulsion Sauces: Acts as a premier beer foam stabilizer (foam stability enhancer); thickens and stabilizes emulsions in mayonnaise, syrups, concentrated drinks, and yogurt.
• Cosmetics & Pharmaceuticals: Widely formulated into peel-off alginate facial masks, moisturizing hydrogels, tablet disintegrants, controlled-release drug matrices, wound dressings, and dental impression materials.

Usage Instructions, Dispersion Protocol & Storage Conditions

• Dry-Blending Rule to Prevent Clumping: Due to its rapid surface hydration, always dry-blend Sodium Alginate with sugar or other dry powdered ingredients at a 1:3 to 1:5 ratio before slowly feeding it into water under high-speed agitation to prevent "fish-eye" lumps.
• Hard Water Control & Sequestration: If process water contains elevated free Ca²⁺ ions (> 40 ppm), premature gelation will occur and reduce viscosity. Pre-treat the water with an ion sequestrant such as Sodium Citrate or STPP (0.05% – 0.1%) prior to dissolving the alginate.
• Warehouse Storage: Store 25 kg bags/cartons in a cool, dry, well-ventilated warehouse away from direct sunlight and humidity. Tightly reseal the inner PE liner and outer bag immediately after each use.

Supply Policy for Sodium Alginate BMSG at THP Chemical

For manufacturers looking to buy Sodium Alginate bulk with guaranteed quality and traceability, Tan Hung Phu Chemical Co., Ltd. (THP Chemical) is an official distributor of Sodium Alginate BMSG in Vietnam, committing to:

• Factory-sealed 25 kg Bags / Carton Boxes (with inner moisture-proof PE liners), available across full viscosity grades and mesh sizes (30 – 200 mesh).
• Internationally verified quality, compliant with E401 / FCC / USP / GB technical standards.
• Full provision of batch-specific Certificate of Analysis (COA), MSDS, Halal/Kosher/ISO/BRC certificates, and VAT invoices.
• Free R&D sample support for factory testing and fast nationwide delivery from our Ho Chi Minh City warehouse.

Frequently Asked Questions (FAQ)

1. Are Sodium Alginate, Alginic Acid Sodium Salt, and E401 the same substance?

Yes. Sodium Alginate and Alginic Acid Sodium Salt are synonymous chemical names for the sodium salt of alginic acid (CAS: 9005-38-3). Under international Codex Alimentarius and EU food regulations, this hydrocolloid is officially designated as E401 food additive (or INS 401).

2. How do we select the right BMSG viscosity code (LYF, MYF, HYF) for our production line?

Selection depends on processing equipment and target rheology: Low-to-medium viscosity grades (LYF/MYF: 100 – 600 cP) ensure clean droplet formation through extrusion nozzles without tailing, making them ideal for popping boba and seafood glazing. High viscosity grades (HYF/HWF: 800 – ≥ 1000 cP) maximize thickening efficiency at low dosages for ice cream, noodles, dressings, and cosmetic masks.

3. Why are Calcium Alginate gels thermally irreversible during pasteurization or baking?

Unlike Gelatin or Agar—which form physical gels via hydrogen bonds that melt upon heating—Sodium Alginate Food Grade undergoes chemical ion-exchange cross-linking with divalent Ca²⁺ ions across L-guluronic acid blocks (G-blocks). This chelated "egg-box" structure is thermally irreversible and retains its shape even under boiling or retort sterilization.

4. Where to Buy Authentic Sodium Alginate in HCMC?

Customers can contact THP Chemical directly for detailed consultations and pricing. All distributed Sodium Alginate products come with a transparent technical documentation package, including: Certificate of Analysis (COA) per batch, Material Safety Data Sheet (MSDS), and manufacturer quality certifications, providing maximum support for QA/QC inspection and your company's product dossier compliance.