Anti-Aging Active
English English Engineered for derma-cosmetics, medical aesthetics, and high-performance oral beauty formulations. Batch-standardized with validated HPLC analytics and comprehensive documentation.
Years of Biosynthesis & Botanical Extraction
Annual Export Volume (SGS Verified Onsite)
PDRN Polymer Purity via High-Speed HPLC
Flexible MOQs for Commercial R&D to Scale
Operating a closed-loop cGMP manufacturing matrix, from supercritical multi-stage extraction lines to pharmaceutical-level sterile crystallization laboratories.
Our production premises, testing facilities, and warehouse logistics in Xi'an, Shaanxi undergo independent annual verification by SGS Group. Full audit reports and chain-of-custody tracking are available to compliance officers.
Unlike crude thermal extraction which fragments nucleic acids irregularly, our patented biocatalytic enzymatic technology cleaves Oncorhynchus keta salmon sperm DNA into uniform molecular fragments between 50 and 1,500 kDa.
Each delivery includes batch-specific Certificates of Analysis (COA) supported by HPLC fingerprinting, UV spectrophotometry, GC-MS residual solvent screening, and complete material safety sheets (MSDS/TDS).
A B2B formulation guide addressing the mechanism of action, quality benchmarks, and the biochemical differences between PDRN, PN, and plant-derived polynucleotides.
Polydeoxyribonucleotide (PDRN) is a controlled polymer of deoxyribonucleotides, isolated primarily from the testis or milt of salmonids (Oncorhynchus mykiss or Oncorhynchus keta). In aesthetic medicine and cosmetic science, PDRN functions as a cell-proliferative signaling agent. Its therapeutic mechanism proceeds along two distinct physiological pathways:
Primary Pathway: Targeted A2A Receptor Activation. The purine bases within PDRN selectively bind to cell-surface adenosine A2A receptors on dermal fibroblasts, vascular endothelial cells, and macrophages. This agonistic binding downregulates pro-inflammatory cytokines (notably TNF-α, IL-6, and HMGB-1) while inducing significant upregulation of vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF). The result is rapid neo-angiogenesis, tissue remodeling, and accelerated re-epithelialization of compromised skin barriers.
Secondary Pathway: The Nucleotide Salvage Pathway. De novo DNA synthesis requires substantial metabolic energy (ATP). When skin undergoes cellular senescence, UV damage, or chemical stress, its de novo nucleotide machinery stalls. PDRN provides ready-to-use purine and pyrimidine rings directly into the salvage pathway. Cells absorb these nucleotide precursors through equilibrative nucleoside transporters (ENTs), enabling immediate chromosomal repair and accelerated extracellular matrix (ECM) generation with minimal metabolic overhead.
Formulators sourcing PDRN must recognize that active efficacy and safety depend on three critical physical-chemical parameters: molecular weight distribution, protein depletion efficiency, and bacterial endotoxin levels. The table below outlines the analytical criteria established at BKYULA Biotech:
| Test Parameter | Standard Commercial Grade | BKYULA Cosmetic Grade Ultra | Medical/Injectable Grade (PN) | Test Methodology |
|---|---|---|---|---|
| PDRN Content (HPLC Assay) | 80.0% – 88.0% | ≥ 98.5% – 99.2% | ≥ 99.5% | High-Performance Liquid Chromatography |
| Molecular Weight (Mw) | Wide Band (20 - 2,500 kDa) | Tight Envelope (50 - 1,500 kDa) | High Polymer (1,000 - 3,500 kDa) | SEC-MALS (Size Exclusion Light Scattering) |
| Residual Protein | < 1.5% | < 0.1% (Low Sensitization) | < 0.01% (Zero Immunogenicity) | BCA / Bradford Assay |
| Endotoxin Limit | Not Tested / < 50 EU/g | < 0.05 EU/mg | < 0.005 EU/mg | Kinetic Chromogenic LAL Method |
| UV Absorbance Ratio (A260/A280) | 1.50 – 1.70 | 1.80 – 1.95 (High Purity DNA) | 1.85 – 1.98 | UV Spectrophotometer |
| Heavy Metals (Pb, As, Cd, Hg) | < 20 ppm total | < 5 ppm total (N.D. individually) | < 1 ppm total | ICP-MS (Inductively Coupled Plasma) |
The core manufacturing challenge for PDRN factories is removing marine antigens, residual fish proteins, lipid membranes, and viral contaminants without cleaving the DNA into useless monomeric bases. BKYULA Biotech utilizes a four-tier proprietary purification process:
Step 1: Low-Temperature Enzymatic Cell Lysis. Fresh, cold-chain salmon milt is thawed under nitrogen blanketing and treated with proprietary endonucleases and neutral proteases at 38°C. This gently digests the cell envelope while protecting the core double-stranded polynucleotide structure from thermal denaturation.
Step 2: Dual Organic Solvent Fractionation & Centrifugal Phase Separation. Specialized food-grade ethanol and organic phase partitions precipitate non-nucleic impurities. Multiple ultrafiltration cycles across 0.1 μm and 10 kDa molecular weight cut-off (MWCO) ceramic membrane cassettes strip away low-molecular-weight peptides and salts.
Step 3: Controlled High-Pressure Ultrasonic / Enzymatic Depolymerization. Native salmon DNA exceeds 10,000 kDa—far too large for dermal delivery and formulation stability. Using continuous-flow, high-pressure ultrasonic depolymerization tanks calibrated to specific megahertz frequencies, our engineers shear the macro-polymers into an active 50–1,500 kDa spectrum.
Step 4: Sterile Lyophilization & Vacuum Packaging. The concentrated PDRN liquor is passed through a 0.22 μm sterile membrane filter inside an ISO Class 5 cleanroom and freeze-dried at -45°C. The resulting crystalline white powder dissolves instantly in aqueous matrices at room temperature, providing exceptional formulation compatibility for premium cosmetic serums, ampoules, and emulsion bases.
Anticipate shifts in consumer expectations, regulatory hurdles, and delivery technologies to maintain a competitive formulation portfolio.
Once restricted to professional clinical mesotherapy (such as Rejuran injections), PDRN is moving rapidly into topical daily skincare. Sourcing demand is surging for water-soluble, low-molecular-weight PDRN (50–300 kDa) engineered for transdermal penetration without needle intervention.
While wild-caught salmon DNA remains the clinical gold standard for cellular affinity, ethical and vegan cosmetic brands are fueling interest in botanical polynucleotide mimics (extracted from algae, seaweeds, and fermented fungi). Hybrid formulation platforms combining marine PDRN with plant stem cells represent the newest wave of R&D inquiries.
Unprotected nucleic acids are vulnerable to native nucleases on the skin mantle. Leading laboratories are moving toward PDRN encapsulated in lipid nanoparticles (LNPs), liposomes, and plant-derived exosomes. BKYULA Biotech supplies micronized, highly dispersible PDRN optimized for high-pressure homogenization in liposomal suspensions.
Essential answers for purchasing teams, QA directors, and contract development manufacturers.
Unlike bulk botanical powders (which typically start at 1 kg or 25 kg), our pure Cosmetic Grade PDRN (Salmon DNA 99%) can be ordered starting from just 1 gram for bench-scale trial formulation, stability testing, and validation. For commercial production contracts, volume tiered pricing applies at 100g, 1kg, 5kg, and 25kg batches.
Our raw material is exclusively derived from food-grade salmon (Oncorhynchus keta and Oncorhynchus mykiss) sourced from certified fisheries operating with sustainable catch quotas. Complete veterinary inspection records, certificates of non-radiation, and non-CITES declaration documents accompany commercial shipments.
Low-grade PDRN often retains trimethylene amines and oxidizable fish lipids, causing rancid odors and yellowing in finished serums. Our multi-stage organic phase washing, carbon adsorption, and membrane filtration steps eliminate volatile amines and lipids, yielding an odorless, bright white powder with clarity in 1% aqueous solution (< 1.5 NTU).
PDRN is stable between pH 5.5 and 8.0. It is fully water-soluble and can be incorporated into the aqueous phase below 45°C. High concentrations of divalent cationic electrolytes (such as Ca²⁺ or Mg²⁺) should be avoided to prevent cross-linked gelatinization. PDRN synergizes exceptionally well with Niacinamide, Hyaluronic Acid, and Copper Peptides.
Our facility is ISO 9001:2015, ISO 22000, and HACCP certified, with HALAL and KOSHER accreditations. Our premises and quality control infrastructure have undergone comprehensive onsite assessment by SGS Group. Factory audit dossiers, equipment validation logs, and raw analytical data are available to qualified procurement managers.
Lyophilized PDRN is shipped in sealed, nitrogen-flushed pharmaceutical aluminum pouches protected by desiccants. While ambient transport is stable for up to 30 days, we recommend cold storage at 2°C–8°C upon arrival. We offer EXW, FOB, CFR, CIF, CIP, and door-to-door DDP air express delivery via DHL, FedEx, and temperature-controlled air freight.
Request our comprehensive Cosmetic Grade PDRN Technical Dossier, batch Certificate of Analysis, formulation guidelines, and complimentary sample testing packs directly from our technical sales laboratory.