Pharmaceutical-grade xanthan gum is a high-purity, high-molecular-weight polysaccharide produced through pure-culture aerobic fermentation of Xanthomonas campestris, specifically refined to meet the stringent purity, microbial, and rheological demands of pharmaceutical formulations, nutraceutical delivery systems, and specialty regulated applications.
Technical Specifications
|
Parameter |
Specification Standard |
Test Method / Conditions |
|
Appearance |
Cream-white to off-white free-flowing fine powder |
Visual Inspection |
|
Viscosity |
1200 mPas to 1600 mPas |
1% Aqueous Solution, 25°C, Brookfield LV, 60 rpm |
|
Loss on Drying |
Maximum 13.0% |
105°C for 2 hours |
|
Ash Content |
Maximum 8.0% |
650°C ignition |
|
Particle Size |
Minimum 98% passing through 80-mesh |
Sieve Analysis (180 micrometer) |
|
Lead (Pb) |
Maximum 2.0 mg/kg |
Atomic Absorption Spectrometry |
|
Arsenic (As) |
Maximum 1.0 mg/kg |
Atomic Absorption Spectrometry |
|
Total Aerobic Count |
Maximum 1000 CFU/g |
Pharmacopeial Enumeration |
|
Yeasts and Molds |
Maximum 100 CFU/g |
Pharmacopeial Enumeration |
|
Pathogenic Bacteria |
Absent in specified sample mass |
E. coli, Salmonella, S. aureus detection |
Compendial Grade Standards
USP/NF Compliance: Meets all current United States Pharmacopeia monograph requirements for identity, microbial limits, assay, and impurity profiles.
EP/BP Compliance: Conforms to European Pharmacopoeia and British Pharmacopoeia specifications for residual solvents, heavy metals, and physical-chemical constants.
Alternative Purity Tiers: Extended purification tiers available to match specific nutritional processing and dual-compliant regulatory filing criteria.
Functional Properties
Yield Stress Maintenance: Creates a measurable yield value at low concentrations, suspending insoluble active ingredients indefinitely without forming rigid gel networks.
Hydration Rate Control: Engineered for rapid dispersion and complete hydration in cold and hot aqueous systems without lump formation when introduced under proper agitation.
Synergistic Thickening: Demonstrates pronounced viscosity enhancement when co-formulated with galactomannans such as locust bean gum or guar gum.
Salinity Resistance: Retains functional viscosity and stabilizing capability in high-electrolyte solutions, acid buffers, and alkaline processing environments.
Advanced Manufacturing Focus
Endotoxin Reduction Control: Employs ultrafiltration and controlled precipitation steps to maintain low bacterial endotoxin levels suitable for oral and topical pharmaceutical preparations.
Pyruvate Content Optimization: Controlled fermentation parameters ensure consistent pyruvate substitution ratios (> 1.5%), guaranteeing predictable gel-network interaction and hydration stability.
Residual Solvent Management: Purified strictly using pharmaceutical-grade ethanol precipitation, ensuring zero toxic residual volatile organic compounds (VOCs).
Application Matrix
Oral Liquid Suspensions: Acts as a primary suspending agent for insoluble powders, antacids, and antibiotic syrups, preventing caking and ensuring dose uniformity.
Sustained-Release Matrix Tablets: Utilized as a hydrophilic swellable barrier polymer to modulate drug release kinetics in direct-compression and wet-granulation matrix cores.
Topical Gels and Ointments: Provides smooth texture, skin adhesion, and consistent spreadability in hydrogels, lotions, and pharmaceutical creams.
Nutraceutical Delivery Systems: Stabilizes liquid vitamin emulsions, protein-mineral suspensions, and functional beverage concentrates against phase separation.
Quality Assurance & Testing
In-Process Monitoring: Automated laser particle sizing, online pH recording, and real-time fermentation broth analysis verify consistency before downstream recovery.
Chromatographic Verification: High-Performance Liquid Chromatography (HPLC) is utilized to verify purity profiles and confirm the absence of unauthorized carbohydrate adulterants.
Batch Release Testing: Every production lot undergoes independent analytical testing for rheological index, microbial enumeration, and heavy metal concentrations prior to release.
Regulatory & Documentation Support
Regulatory Dossier Package: Comprehensive technical data packages include Certificates of Analysis (COA), Material Safety Data Sheets (MSDS), and TSE/BSE-free statements.
Traceability Data: Accelerated and long-term shelf-life stability test data available to support regulatory filing and product registration.
Management Systems: Manufactured under strict Current Good Manufacturing Practice (cGMP) guidelines, supported by ISO 9001 and FSSC 22000 quality management systems.
Storage Protocols
Environmental Controls: Store in original, tightly sealed containers in a cool, dry, well-ventilated area away from direct sunlight, extreme heat, and moisture-prone environments.
Temperature Parameters: Maintain ambient storage temperatures between 10°C and 30°C with relative humidity below 75%.
Shelf Life: 24 months from the date of manufacture when stored in accordance with specified handling protocols.
Packaging and Logistics
Primary Packaging: Packed in food-grade polyethylene liners heat-sealed inside multi-wall fiber drums or moisture-barrier polyethylene bags.
Packaging Specifications: Available in 25 kg net weight fiber drums with tamper-evident security seals, or 20 kg moisture-resistant cardboard boxes.
Standard Minimum Order Quantity (MOQ): 100 kg for standard specification grades (custom micronization/particle size distribution MOQ is subject to scheduled production campaigns).
Transport Conditions: Shipped via containerized freight protected against rain, moisture condensation, and atmospheric humidity extremes during international transit.
Frequently Asked Questions
Q: What is the primary difference between industrial-grade and pharmaceutical-grade xanthan gum?
A: Pharmaceutical-grade xanthan gum undergoes advanced purification, controlled alcohol precipitation, and strict microbial enumeration to meet compendial standards (USP/EP), whereas industrial grades are processed primarily for oil drilling or agricultural applications with higher microbial and impurity limits.
Q: How does pH variation affect the viscosity of this product?
A: Viscosity remains exceptionally stable across a wide pH range from 2.0 to 12.0, showing negligible viscosity drift even under prolonged exposure to acidic fruit juices or alkaline buffer systems.
Q: Does this product require special dispersion equipment during manufacturing?
A: Standard high-shear mixing equipment or propeller agitation capable of creating a vortex is sufficient. Slow dusting into the vortex prevents agglomeration and ensures complete hydration.
Q: What documentation is provided with each commercial shipment?
A: Each shipment includes a batch-specific Certificate of Analysis detailing exact viscosity, moisture, ash, heavy metal, and microbial test results, accompanied by packing lists and regulatory compliance declarations.
Q: What is the minimum order quantity (MOQ) for custom particle size distribution?
A: Custom micronization and specific mesh distribution milling requests are accommodated based on scheduled production campaigns; please contact our technical sales team for specific minimum batch requirements.
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