Product Introduction
Sodium Alginate is a premium natural polysaccharide extracted from brown seaweed. As a leading professional manufacturer, Shanghai Joy Biotech offers high-purity, multi-grade Sodium Alginate tailored precisely to your specific viscosity, texture, and gelling requirements. Our advanced processing technology ensures outstanding cross-linking properties, high thermal stability, and excellent shear-thinning behavior, making it the ideal choice for high-end B2B applications across food, pharmaceutical, and industrial sectors.
Application Differentiation by Grade & Viscosity
We solve the critical challenge of viscosity selection by classifying our product range into three specialized categories.Viscosity is measured accurately at a 1% aqueous solution at 20°C (Brookfield RVT, 20 rpm):
Food Grade (High Viscosity Sodium Alginate): Optimized for excellent water-binding, stabilization, and thickening in bionic foods, dairy, bakery products, and meat coatings.
Pharmaceutical Grade (Ultra-Pure / Low-to-Medium Viscosity): Features ultra-low endotoxin levels and strict heavy metal controls. Perfect for cell encapsulation, wound dressings, drug sustained-release matrices, and anti-reflux formulations.
Industrial Grade (Technical Custom Viscosity): Engineered with robust shear resistance and chemical stability fortextile printing pastes, eco-friendly papermaking, and advanced welding rod coatings.
Technical Framework & Specifications
Viscosity Classification Matrix (1% Solution, 20°C)
| Grade Classification | Viscosity Range (mPa·s / cP) | Primary Target Application |
| Ultra-High Viscosity | > 1,000 mPa·s | Bionic food binding, specialized thickeners, structural gels |
| High Viscosity | 500 – 1,000 mPa·s | Dairy stabilizers, meat restructuring, textile printing paste |
| Medium Viscosity | 200 – 500 mPa·s | Bakery fillings, sauce emulsification, standard drug matrices |
| Low Viscosity | < 200 mPa·s | Beverage suspension, pharmaceutical coatings, micro-encapsulation |
Structural Differentiation: G/M Ratio Explanation
The functionality of Sodium Alginate is fundamentally governed by its molecular structure-specifically the ratio of β-D-mannuronic acid (M) to α-L-guluronic acid (G) blocks. At Joy Biotech, we provide customized structural profiles tosuit your manufacturing needs:
High-G Alginate (G/M Ratio ≥ 1.5): Forms brittle, hard, and thermally irreversible rigid gels rapidly in the presenceof calcium ions (Ca2+). Ideal for structured bionic foods, restructuring meats, and dental impression materials.
High-M Alginate (G/M Ratio ≤ 0.7): Forms soft, flexible, elastic, and highly biocompatible hydrogels with superiormoisture retention. Perfect for pharmaceutical wound care, topical sheets, and smooth-texture food emulsions.
Strict Microbiological & Purity Control Standards
To meet compliance in highly regulated B2B markets (FDA, EU Food Additive Regulations, and USP/EP compliance), every batch undergoes rigorous quality assurance:
| Quality Parameter | Food Grade Standard | Pharmaceutical Grade Standard |
|---|---|---|
| Assay (Purity) | 90.8% – 106.0% | 98.0% – 102.0% |
| Total Plate Count | ≤ 1,000 cfu/g | ≤ 100 cfu/g |
| Yeast & Mold | ≤ 100 cfu/g | ≤ 10 cfu/g |
| E. coli / Salmonella | Negative / 25g | Negative / 25g |
| Heavy Metals (as Pb) | ≤ 5 ppm | ≤ 2 ppm |
| Arsenic (As) | ≤ 1.5 ppm | ≤ 1 ppm |
Conversion-Driven Application & Formulation Insights
Pro-Formulation Tips for Dynamic Gelling Applications
Achieving the perfect texture depends heavily on managing the calcium cross-linking speed. We recommend thefollowing formulation strategies for R&D engineers:
Internal Gelling (Controlled Setting): Use insoluble calcium sources like Calcium Carbonate (CaCO3)combined with a slow-release acidulant such as Glucono-Delta-Lactone (GDL). This guarantees uniformgelation throughout the matrix without premature clumping.
External Gelling (Instant Film/Shell Formation): Submerge your alginate solution bath into a 1.0%–2.0%Calcium Chloride (CaCl2) solution. This is perfect for bionic pearls, encapsulation, and outer film barriercoatings.
Viscosity Optimization: To maximize the performance of High Viscosity Sodium Alginate, fully hydrate thepowder in warm water (60°C) with high-shear mixing before introducing any multi-valent ions.
Our advantages
01
Stable quality
We deliver high-quality products supported by strict QC/QA. Our teams inspect raw materials, production process, and finished goods, while optimizing processes for consistent quality.
02
Factory Price
As a manufacturer, we offer factory-direct pricing and diverse high-quality products at competitive rates, backed by reliable supply to meet your demands.
03
Delivery speed
Fast delivery guaranteed: in-stock chemicals ship immediately; custom synthesis orders include production lead times.
Packaging and delivery
Packaging of Sodium alginate
25kg/bag, or customize packaging size based on demands.
Delivery
By air, by sea, or express courier.
Samples and small quantity orders can be shipped via DHL, Fedex,TNT,UPS.
Company Profile
Shanghai Joy Biotech Ltd. is a professional supplier of dietary supplements (such as Sodium alginate), cosmetic ingredients, pharmaceutical raw materials.
The R&D team at Joy Biotech consists of experts in synthesis biology, pharmaceuticals,chemistry, and biology.
Joy Biotech is a reliable partner in supplying active ingredients, and we also offer custom synthesis, CMO and CDMO service.
FAQ
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