Pterostilbene Extract

Shaanxi Rebecca Biotechnology Co., Ltd.makes high-quality plant extracts by combining modern technology with strict quality standards.The entire production process stays clean and free from contamination thanks to the company's 100,000-grade cleanroom facility.

Our Competitive Advantages:

Advanced R&D Capabilities: Our technical team improves how well nutrients are absorbed while keeping their quality high by using ultra-fine grinding and high-temperature drying.

Comprehensive Certification Portfolio: To show our commitment to global quality standards, we follow ISO9001, ISO22000, FSSC22000, HACCP, HALAL, KOSHER, and cGMP certifications.

State-of-the-Art Testing Equipment: Each batch goes through strict third-party testing to check for bacteria, heavy metals, pesticides (which follows EU EC396 standards), strength, and cleanliness.

Flexible Customization: We offer OEM and ODM services for different types of dosage forms like tablets, powders, hard capsules, and soft capsules, all tailored to meet your specific needs.

Global Supply Chain Excellence: Our reliable global logistics system ensures that products are delivered on time, safely, and without damage during shipping.

Premium Raw Material Selection

The carefully chosen heartwood of Pterocarpus marsupium and Pterocarpus indicus trees is the source of our pterostilbene. Only in the dark heartwood, where decades of development accumulate peak potency, can the active chemicals concentrate. Only quality heartwood sections are processed; sapwood, bark, and any rotten parts are carefully removed.

Traceable Supply Chain

Every batch is linked to recorded dates of processing and harvesting. Our suppliers ensure long-term resource availability while preserving natural balance by using sustainable forestry practices.

Grade Classification Explained

· 95% General Grade: A cost-effective option for herbal powder mixes and basic antioxidant uses

· 99% Pharmaceutical Grade: Extremely pure material suitable for research, pharmaceutical production, and high-quality cosmetics with impurities under 0.1%

· 98% Export Grade: Our top-selling grade with excellent batch consistency, ideal for dietary supplements and mid-tier skincare products

Solubility Profile

The usual crystal form dissolves quickly in ethanol, methanol, acetone, and DMSO, but it doesn’t dissolve well in water (only about 0.1 mg/mL in cold water).Our version made with cyclodextrin can be mixed easily with water, creating clear, stable solutions that work well for drinks and clear serums.

Stability Features

When compared to resveratrol, pterostilbene shows better stability.It stays the same even when heated to temperatures below 65°C.It works best in a pH range of 5.0 to 7.0, which covers most of the needs for making products.Liquid forms should be kept in containers that protect them from light to prevent changes caused by light.However, dry powder form remains stable as long as it's stored properly.Our special packaging helps keep the trans-isomer form unchanged for a long time.

Our Pterostilbene Extract process places a high priority on purity while carefully controlling the environment to avoid undesired isomerization.

Raw Material Preparation: After physically sorting the heartwood to remove contaminants and rot, we dry it at a maximum temperature of 60°C. While crushing to 20–30 mesh maximizes extraction efficiency, this stops oxidative deterioration.

Countercurrent Extraction: Target chemicals are extracted using food-grade ethanol-water solutions in two to three cycles, maximizing yield while preserving chemical integrity.

Concentration Phase: Negative pressure systems produce crude extract without thermal degradation by recovering ethanol solvents below 60°C.

Fractional Purification: Using exact ethanol gradient elution, macroporous resin columns separate trans-pterostilbene from cis-isomers and residual resveratrol. Purification phases that are depending on specifications guarantee the right levels of purity.

Gradient Recrystallization: Contaminants are removed using a process called temperature-controlled crystallization.For higher purity levels, the substance goes through multiple rounds of recrystallization, and each step is carefully checked to make sure impurities are removed.

Dehydration & Drying: After centrifuging, the sample is dried in a vacuum at 60°C, and it is done in chambers that block out light to keep the molecular structure safe.This process removes any extra solvent.

Optional Modification: Water-soluble versions use spray drying and high-pressure homogenization to include cyclodextrin.

Quality Homogenization: Before using light-proof packaging, batch consistency is achieved by grinding the material to the required particle size and then mixing it thoroughly in three dimensions.

This versatile compound supports diverse formulation goals across multiple industries:

Dietary Supplements: Helps the heart and blood vessels by keeping blood pressure in check and managing the fats in the blood.Boosts the body's ability to fight off illnesses and works better with how the body uses energy.

Skincare Products: Helps fight off damage from environmental stress with strong antioxidant power.Offers more stability compared to regular ingredients, making it better for anti-aging products.

Functional Foods: provides food matrices with antioxidant properties while acting as a natural preservative..

Research Applications: acts as a benchmark for the development of analytical techniques and research on biological activities.

Key Functional Properties: Antimicrobial properties, anti-inflammatory effects, cholesterol control, antioxidant capacity, and cellular defense systems.

Every batch is guaranteed to fulfill strict international standards thanks to our extensive quality management system.

Certification Framework: Our methodical approach to quality is demonstrated by our several ISO certifications (9001, 22000), FSSC22000, HACCP, and religious certificates (HALAL, KOSHER).

Testing Capabilities: Identity, purity, and potency are confirmed in-house using spectroscopic, GC-MS, and HPLC equipment. In particular, we measure residual resveratrol, cis-impurities, and trans-isomer content independently.

Third-Party Validation: Independent labs verify solvent residues, microbiological safety, pesticide residue limits (EU standards), and heavy metal compliance.

Complete Traceability: Each package contains processing records, complete analytical data, and batch documentation linking the final product to the source of raw materials.

Standard Packaging: Enclosed in 25 kg moisture-proof fiber drums with light-blocking qualities, double PE bags offer main protection. Batch numbers and storage guidelines are clearly labeled on the outer box.

Custom Options: Different fill weights, vacuum-sealed aluminum foil bags, or customer-branded containers for OEM agreements are examples of specific packaging needs that we may fulfill.

Shipping Methods: For urgent orders, international air freight guarantees quick delivery. For large cargoes, sea freight offers cost-effective options. Our logistics partners guarantee product integrity throughout transportation by specializing in temperature-sensitive plant extracts.

Sample Availability: Formulation testing before to commitment is made possible by free samples. For evaluation samples with complete analytical documentation, send an email to information@sxrebecca.com.

Q: Can you control cis-isomer content and provide separate COA values for trans, cis, and resveratrol?

A: Yes. Our chromatographic separation limits cis-isomers to ultra-low levels. Each COA lists trans content, cis impurities, and resveratrol residue individually, meeting premium formulation standards.

Q: Does your water-soluble grade remain stable in liquid formulations?

A: Our cyclodextrin inclusion version passes accelerated stability testing without crystallization or turbidity in oral liquids and clear essence applications.

Q: What light-protection measures prevent photo-isomerization during production and shipping?

A: Complete facility light-shielding throughout production, concentration, and drying processes. Double-layer light-proof vacuum aluminum foil packaging prevents trans-to-cis conversion during storage and ocean transport.

Q: What dosage forms can you provide?

A: We supply standard powder and offer custom tablet, hard capsule, and soft capsule manufacturing based on your formulation requirements.

Q: How quickly can you fulfill orders?

A: Stock specifications ship within 3-5 business days. Custom formulations require 2-3 weeks depending on complexity and order volume.

Ready to experience superior antioxidant performance? Contact our technical team at information@sxrebecca.com for detailed specifications, pricing, and formulation support. We're committed to helping you develop exceptional products with our premium Pterostilbene Extract.