95% Proanthocyanidins

95% Proanthocyanidins – Premium Plant Extract from Xi'an Linnas Biotech

Xi'an Linnas Biotech Co., Ltd. manufactures pharmaceutical-grade 95% Proanthocyanidins, Pinus pinaster (Maritime Pine Bark) or Vitis vinifera (Grape Seed) are the main sources of this high-purity, standardized botanical extract. With a minimum of 95% polyphenolic condensed tannins confirmed by UV-Vis spectrophotometry, this criteria is the industry gold standard. With an outstanding ORAC value of more than 13,000 µmol TE/g, our extract is among the strongest natural antioxidants on the market. Through sophisticated HPLC fingerprinting and stringent heavy metal control (<10ppm), we guarantee consistent batch-to-batch quality with ISO 9001, HACCP, Halal, and Kosher certifications. Your formulation timeframes will remain on schedule if samples are available and delivered within three days.

Product Specifications

Why Choose Our 95% Proanthocyanidins?

Your formulation demands consistency, purity, and reliable bioavailability. Lower-grade extracts introduce instability, sedimentation, and unpredictable therapeutic outcomes.

Our 95% Proanthocyanidins solves critical industry challenges. We allow you to give efficient dosages (100–300 mg) in small capsule sizes or functional beverages without bulk or taste off-notes by concentrating Oligomeric Proanthocyanidins (OPCs). Because of the high purity, there is less non-active organic load, which lowers the danger of oxidation and hygroscopicity that shortens the shelf life of the product.

We only use water-ethanol extraction, which removes harsh solvent residues that raise regulatory red flags. To distinguish authentic Grape Seed/Pine Bark sources from less expensive peanut skin adulterants, each batch is subjected to sophisticated quality control procedures such as HPLC fingerprinting, TLC adulteration screening, and C13-NMR isotopic analysis.

Quality Control You Can Trust

Our thorough testing procedures are essential to quality assurance teams.

Assay Validation: We particularly confirm the Oligomer (OPC) levels that drive therapeutic efficacy, even though UV-Vis confirms the 95% total polyphenol content. Your items will function as promised thanks to this dual-layer testing.

Adulteration Prevention: To verify genuine sourcing, we employ TLC and C13-NMR studies. This shields your company from supply chain fraud, which frequently occurs with cheaper providers.

Contaminant Profiling: EU regulations are met by strict limitations on pesticide residues and polycyclic aromatic hydrocarbons (PAHs). Clear solution tests confirm that there is no carrier adulteration, such as maltodextrin spiking, and the ash content remains below 1%.

When the pH is maintained between 3 and 5V, our dark purple powder demonstrates a distinct astringent taste, great water solubility, and excellent formulation compatibility.

Applications Across Industries

Cardiovascular Supplements: Accurate pharmaceutical dosing is beneficial for your venous health compositions. Our extract strengthens capillary walls and enhances endothelial function, which is essential for products for hypertension and chronic venous insufficiency (CVI), where lower purities are unable to produce quantifiable effects.

Premium Dermo-Cosmetics: It inhibits the enzymes collagenase and elastase, which break down the structure of the skin, while also stabilizing collagen and providing UV protection. For luxurious skincare elegance, the high purity guarantees total solubility in aqueous serums without gritty precipitation.

Functional Drinks: Stability against hydrolysis is necessary for eye care drinks that aim to protect against blue light. Our 95% specification preserves product clarity and taste integrity over the course of its shelf life by preventing sedimentation and off-flavors linked to impure extracts.

Technical Stability & Storage

Understanding stability concerns helps optimize your formulation success. While highly water-soluble, 95% Proanthocyanidins oxidizes in aqueous solutions over time, causing browning.

Use nitrogen flushing during manufacture and keep the pH of beverages acidic (3-5). To avoid hygroscopicity impacting flowability, store powder at controlled room temperature in airtight, light-resistant containers with desiccant packs.

The extract is susceptible to alkaline conditions, heat, and light. By extending the stability of final products through opaque packaging or microencapsulation, you can guarantee that your clients receive the highest level of antioxidant potency.

Packaging & Delivery

We provide customizable packaging to fit the volume of your order:

• Foil bags: 1-10kg for trial batches or small-scale production
• Fiber drums: 20-25kg for commercial manufacturing runs

Light-resistant materials and desiccant protection are included in every package. Delivery takes place three days following payment confirmation, guaranteeing the continuity of your production plans.

Frequently Asked Questions

Q1: What's the difference between 95% Proanthocyanidins and 95% OPCs?

A: Proanthocyanidins comprise both tiny oligomers and big polymers. In particular, bioavailable tiny chains (dimers to tetramers) are referred to as OPCs. Different OPC levels are present in our extract, which we can describe individually upon request.

Q2: How do you verify source authenticity?

A: Grape seed and pine bark sources can be distinguished by HPLC chemical fingerprinting. When compared to pine bark, grape seed exhibits larger ratios of galloylated procyanidins, which prevents substitution fraud.

Q3: Are harsh solvents used in extraction?

A: No. We exclusively use water and ethanol extraction. Avoid suppliers using methanol or acetone, as residual solvents create major regulatory issues.

Q4: Can I use this in liquid formulations?

A: Yes, but stability requires pH control (acidic range) and protective measures like nitrogen flushing to prevent oxidation and maintain color stability.

Q5: What certifications support international trade?

A: Our facility holds ISO 9001, HACCP, Halal, and Kosher certifications, meeting import requirements for Europe, North America, and Middle Eastern markets.

Contact Us

Ready to enhance your formulations with pharmaceutical-grade 95% Proanthocyanidins? Our technical team can provide samples, detailed COA documentation, and customized solutions for your specific application needs.

Contact us : cathy@linnas.com.cn