Pterostilbene Bulk Powder

Technical Specifications

Pharmaceutical Grade Manufacturing Environment

Shaanxi Rebecca Biotechnology has a 100,000-grade cleanroom facility and advanced quality control systems. Every batch is rigorously tested at multiple stages for purity, heavy metals and microbiological content to guarantee that they meet EU EC396 and EU 2023/915 requirements.

Unmatched Supply Stability

Our optimised biosynthetic production route removes the need for seasonal plant harvesting. This secures the same quality parameters all year round and protects your production planning from shortages of raw materials.

Flexible Customization Services

We cater your custom solutions with 98% affordable grade for mid-tier supplements or 99.5% registration grade for clinical purposes. Our OEM/ODM services offer a variety of dosage forms such as tablets, capsules and customised powder blends to meet your specific formulation needs.

Technical Support and Documentation

With each order, you receive full batch analysis certifications, stability data and traceability records. Our technical staff helps with formulation, solubility optimisation and regulatory documents for registration in world markets.

Step 1: Purity Substrate Selection

We provide pharmaceutical grade chemical precursors pre-screened for heavy metal contamination and residual impurities, thus creating a clean slate for synthesis.

Step 2: Catalytic Directed Synthesis

We manage the temperature and pH in our closed-loop reaction system to maximise the synthesis of the trans-isomer while minimising the formation of the undesirable cis-isomer and by-products.

Step 3: Multi-Stage Gradient Recrystallization

This essential process involves controlled crystallisation cycles to remove cis-isomers and trace impurities stepwise, reaching trans-pterostilbene purity over 99 %.

Step 4: Low Temperature Vacuum Desolventisation

The advanced vacuum drying method removes residual solvents to below ICH Q3C limits, with no thermal degradation or colour change.

Step 5: Correct Grinding & Screening

Controlled milling for homogeneous particle distribution (80 – 200 mesh choices) to ensure optimum flowability for your encapsulation or tabletting processes.

Step 6: Homogenise in Batches

3D blending technique reduces batch-to-batch differences in purity and moisture content for your large-scale continuous manufacturing demands.

Step 7: Light-Protected Packaging

Double-layer aluminium foil vacuum bags prevent oxidative degradation during storage and transit, helping to retain product integrity across your supply chain.

Step 8: Full-Spectrum Quality Verification

Final release testing includes HPLC purity analysis, solvent residue screening, microbiological testing and heavy metal profiling, with full documentation to meet regulatory requirements.

Enhanced Bioavailability

The methoxy modifications greatly improve intestinal absorption and metabolic stability leading to prolonged plasma concentrations that cannot be achieved by hydroxylated substances.

Enhanced Lipophilicity

Pterostilbene Bulk Powder easily permeates lipid membranes (LogP ~3.54) making it a great option for your brain-health and dermatological formulations that require cellular penetration.

Exceptional Thermal Stability

It is stable to normal processing temperatures up to 80°C and can be formulated into tablets, hard gelatine capsules and granules without loss of activity.

Application Scope Versatile

Suitable for use in lipid based softgels, aqueous systems using suitable solubilizers, and provides formulation flexibility across product types.

Third Party Verified Quality

Independent lab testing ensures purity, potency and safety standards providing you with clear quality assurance for regulatory filings.

Inner Packaging Selection

The normal set up is double layer food grade polyethylene bags, 5kg net each bag. If your applications are moisture sensitive, we have aluminium foil vacuum sealed bags with nitrogen flushing for maximum shelf stability.

Outer Packaging Solutions

The products are packed in fibre drums with cushioning elements to avoid damage during shipment. Each barrel is neatly marked with batch number, manufacture date, expiration date and handling instructions, in compliance with the rules of international shipment.

Logistics Network

We are partnered with recognised freight forwarders specialising in pharmaceutical and nutraceutical goods for our global distribution system. We offer several shipping methods such as sea freight for bulk orders and air express for urgent needs.

Documentation Pack

All shipments contain Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), allergen statements, GMO-free declarations and origin certificates to help ensure customs clearance and regulatory compliance in your destination market.

Order Flexibility

Minimum order quantity from 1kg only with free samples are offered for your first assessment. We can also offer special packaging options and special price options for larger volume purchases.

Formulations of Anti-Aging Supplements

Your high-end lifespan solutions have the advantage of pterostilbene’s confirmed SIRT1 activation pathway, putting them in competition with regular resveratrol products with clearly superior bioavailability claims.

Brain Boosting Products

The permeability of the blood-brain barrier makes the substance a crucial component of nootropic stacks for memory enhancement, mental clarity, and neuroprotection in ageing populations.

Heart Health Solutions

Create health-conscious customers with evidence-based heart health supplements that have the benefits of pterostilbene in lipid metabolism regulation and vascular endothelial protection.

Premium Skincare Applications

Use as a non-irritating tyrosinase inhibitor in your anti-aging serums and brightening treatments that offers consumers a sophisticated alternative to standard skin-lightening chemicals.​​​​​​​

Q: Can you confirm the benefits in stability compared to resveratrol during manufacture?

A: Yes, our comparative data on thermal and photostability shows that pterostilbene is more thermally stable under normal processing circumstances especially during the granulation and tabletting processes involving high temperatures.

Q: What is the grade of purity and particle size?

A: We have in stock 98% economical grade, 99% export grade and 99.5% pharmaceutical quality. Standard mesh sizes: 80-100 mesh, 200 mesh ultra fine powder. Custom specifications can be made upon request.

Q: How do you keep batch uniformity for long term supply agreements?

A: Our automated process controls and large batch homogenization techniques minimise variances in purity and moisture. With annual framework agreements you have quarterly set pricing and guaranteed delivery schedules to assist with your production planning.

Ready to enhance your formulations with premium Pterostilbene Bulk Powder? Contact our technical sales team at information@sxrebecca.com for detailed specifications, pricing information, and complimentary sample requests.