What Is Hirudin Powder?
Hirudin powder is a high-potency natural bioactive ingredient derived from Whitmania pigra Whitman (commonly known as the Chinese medicinal leech). This remarkable polypeptide has served as a cornerstone of Traditional Chinese Medicine (TCM) for centuries and is now recognized worldwide as one of the most potent naturally occurring anticoagulant agents. The leech, a freshwater annelid, produces hirudin primarily in its salivary glands, and the compound is carefully extracted from dried whole-body leech material using controlled, reproducible manufacturing processes.
At the molecular level, hirudin is a small single-chain polypeptide consisting of 65–66 amino acid residues with a molecular weight of approximately 7,000 Da. Its direct and highly specific inhibition of thrombin makes it a subject of intense interest in pharmaceutical research, cardiovascular health formulation, and advanced nutraceutical development. As a manufacturer of premium hirudin powder, The Extract Factory delivers a standardized, assay-verified product designed to meet the rigorous demands of B2B buyers, formulators, and distributors across global markets.
Product Specifications
| Parameter | Detail |
|---|---|
| Product Name | Hirudin Powder (Leech Extract) |
| Botanical Source | Whitmania pigra Whitman |
| Part Used | Whole dried body |
| Other Names | Hirudin Freeze-Dried Powder, Leech Extract Powder |
| Appearance | Brown to gray fine powder |
| Assay (Activity) | 800 ATU/g (Anti-Thrombin Units per gram) |
| Extraction Technology | Dried leech → Crushing → Solvent Extraction → Concentration → Spray Drying → Quality Testing → Storage |
| Solubility | Soluble in water; stable in aqueous formulations |
| Stability | Resistant to trypsin and chymotrypsin degradation; retains activity in hydrolyzed fragments |
Source, Extraction & Manufacturing Process
The raw material for our hirudin powder originates from sustainably cultivated Whitmania pigra Whitman in controlled freshwater environments. Selecting the right leech species is critical—Whitmania pigra is specifically prized for its higher hirudin content compared to other leech varieties such as Hirudo medicinalis.
Our production workflow at The Extract Factory follows a carefully validated sequence:
- Raw Material Sourcing & Inspection – Only pharmacopoeia-grade dried leeches are accepted. Each batch undergoes identity verification and preliminary microbial screening.
- Mechanical Crushing – Whole dried leeches are milled into a uniform particle size to maximize extraction efficiency.
- Solvent Extraction – Aqueous or hydro-ethanolic extraction isolates the bioactive polypeptide fraction under controlled temperature and pH conditions.
- Concentration & Purification – The crude extract is concentrated via vacuum evaporation and subjected to filtration steps to remove insoluble residues.
- Spray Drying – The purified concentrate is spray-dried into a free-flowing powder with consistent moisture content, ensuring long shelf life and batch-to-batch uniformity.
- Quality Control Testing – Every lot is assayed for hirudin activity (ATU/g), moisture, heavy metals, microbial limits, and residual solvents before release.
- Storage & Packaging – Finished product is stored in climate-controlled, sealed containers to preserve potency.
This end-to-end process is supported by four independent production lines dedicated to proportion extracts and content-standardized extracts, staffed by experienced technical personnel who oversee every stage from raw material intake to final dispatch.
Nutritional & Bioactive Profile of Leech Extract
Beyond its flagship anticoagulant component, hirudin powder contains a broad spectrum of naturally occurring bioactive constituents that enhance its value as a multi-functional raw material:
Protein & Amino Acids
Leech powder contains up to 62% total amino acids by weight. Of the 17 amino acids identified, glutamic acid, aspartic acid, lysine, and leucine are present in notably high concentrations. This rich amino acid profile makes leech-derived ingredients attractive for inclusion in dietary supplements and functional food formulations targeting muscle recovery, immune support, and general nutritional enrichment.
Bioactive Polypeptides
In addition to hirudin itself, leech extract harbors a range of low-molecular-weight polypeptides formed by multiple amino acid chains. These secondary peptides contribute to the overall bioactivity of the material and are of growing interest in peptide-based nutraceutical research.
Essential & Functional Trace Elements
Analytical profiling reveals the presence of eight key mineral elements: calcium, chromium, copper, iron, magnesium, manganese, vanadium, and zinc. Of these, vanadium, manganese, copper, iron, and zinc are recognized as essential trace elements in human physiology. Zinc, in particular, plays a vital role in enzymatic metabolism involving proteins, carbohydrates, nucleic acids, and lipids. It is widely studied for its immune-modulating properties and has been associated with anti-proliferative (anti-cancer) activity in scientific literature.
Fatty Acid Composition
Leech extract contains 16 identified fatty acids, with saturated fatty acids comprising approximately 63.34% and unsaturated fatty acids accounting for 34.05%. This balanced lipid profile supports the ingredient's relevance in formulations aimed at cardiovascular health and lipid metabolism regulation.
Key Functions & Mechanisms of Action
Hirudin powder delivers its primary therapeutic and functional value through several well-documented biological mechanisms:
- Direct Thrombin Inhibition – Hirudin binds directly and irreversibly to thrombin (Factor IIa), blocking its ability to convert fibrinogen to fibrin. Unlike heparin, hirudin does not require antithrombin III as a cofactor, giving it a distinct pharmacological advantage.
- Anticoagulant & Antithrombotic Activity – The compound exerts potent anticoagulant effects with a favorable safety profile, producing minimal bleeding side effects and demonstrating low immunogenicity and no reported allergic reactions in available studies.
- Cerebrovascular Support – Research indicates that leech-derived compounds can mitigate the neurological impact of cerebral ischemia, positioning hirudin powder as a valuable raw material for TCM-inspired cerebrovascular health products.
- Anti-Tumor Angiogenesis Potential – Preclinical investigations suggest that hirudin may inhibit tumor neovascularization by suppressing vascular endothelial growth factor (VEGF) activation and reducing hypoxia-inducible factor (HIF) expression. By lowering blood viscosity and improving microcirculation, it may also enhance oxygen and nutrient delivery to tissues.
- Blood Stasis Resolution – In the context of TCM theory, leech extract is classified as a blood-breaking and circulation-promoting agent, traditionally used to resolve blood stasis and restore vascular flow.
Industry Applications
Hirudin powder is a versatile raw material serving multiple sectors:
| Application Sector | Use Case |
|---|---|
| Pharmaceutical Raw Materials | Active ingredient for antithrombotic drug development; alternative to heparin-based therapies |
| Nutraceuticals & Dietary Supplements | Cardiovascular health supplements; blood circulation support capsules and tablets |
| Functional Foods & Beverages | Fortification of health-oriented food products targeting vascular wellness |
| Biomedical Research | Reagent-grade material for thrombin inhibition studies, coagulation cascade research, and angiogenesis assays |
| Cosmeceuticals | Exploratory use in topical formulations aimed at microcirculation improvement and wound healing support |
| Veterinary Applications | Investigational use in anticoagulant therapy for animal health products |
Notably, natural hirudin produced by The Extract Factory retains higher biological activity compared to fully synthetic or recombinant variants, making it the preferred choice for formulators seeking maximum potency from a natural-origin ingredient.
Hirudin powder also demonstrates remarkable biochemical stability—it resists degradation by trypsin and chymotrypsin, and certain hydrolyzed fragments of the molecule continue to inhibit thrombin. This characteristic helps explain the continued efficacy observed in oral traditional preparations containing leech extract and supports its use in oral dosage forms.
Furthermore, hirudin can be combined with chemotherapy or radiation therapy protocols to improve intratumoral blood flow and enhance therapeutic delivery—an application currently under active investigation in oncology research settings.
Quality Assurance, Certifications & Compliance
At The Extract Factory, quality is non-negotiable. Our hirudin powder is manufactured under an ISO 9001-certified quality management system and is supported by the following credentials:
- Halal Certification – Ensuring compliance with global Islamic dietary and pharmaceutical standards.
- Kosher Certification – Meeting the stringent requirements of kosher-observant markets.
- ISO 9001:2015 – Demonstrating systematic quality control across all production and supply chain processes.
- Third-Party Testing – Internationally accredited laboratories verify every batch for assay potency, heavy metals (Pb, As, Cd, Hg), microbial limits (TPC, yeast & mold, E. coli, Salmonella), and residual solvents in accordance with pharmacopeial and food-grade specifications.
Our dedicated quality team and specialized personnel for raw material procurement ensure that every shipment meets or exceeds customer specifications—whether you require a single kilogram for R&D or a full container for commercial production.
Packaging, Shipping & Lead Times
We offer flexible packaging solutions tailored to order volume and logistical requirements. All products are packed in moisture-barrier, light-protective materials to preserve hirudin activity during transit.
| Cargo Weight | Packaging Configuration | Shipping Method | Estimated Lead Time |
|---|---|---|---|
| Below 5 kg | Foil bag (inner) → Master carton (outer) | International Express (FedEx / DHL / UPS) | 7–10 days |
| 5–25 kg | Double-layer PP bag → Master carton or cardboard drum | International Express (FedEx / DHL / UPS) | 7–10 days |
| 100–200 kg | 25 kg/drum, double-layer PP bag → Cardboard drum | Air Shipping | 7–10 days |
| Over 500 kg | 25 kg/drum, double-layer PP bag → Cardboard drum | Sea Shipping | 20–45 days |
Custom packaging options are available upon request, including private-label drums, retail-ready sachets, and nitrogen-flushed containers for extended stability.
Why Source Hirudin Powder from The Extract Factory?
With over 15 years of experience in the botanical extract and natural ingredient industry, The Extract Factory has built a reputation for reliability, transparency, and technical excellence. Here is what sets us apart as your hirudin powder supplier:
- Direct Manufacturer Pricing – As the producer, we eliminate middleman markups and offer competitive, volume-tiered pricing for wholesale and bulk orders.
- Customized Formulation Support – OEM and ODM services are available, including custom assay strengths, particle size adjustments, and blended formulations.
- Rapid Response – All inquiries receive acknowledgment within 12 hours via email or online platforms.
- Free Samples – Pre-shipment samples are provided for quality evaluation prior to commitment.
- Trade Assurance – Transactions are protected through Alibaba's third-party trade guarantee system.
- Stable Inventory & Fast Fulfillment – Core products are held in stock for immediate dispatch; mass production orders are completed within 7 days.
- Independent Quality Verification – Products can be submitted to any internationally authorized third-party laboratory of your choice for independent confirmation.
Storage Recommendations
To maintain optimal potency and shelf life, hirudin powder should be stored in a cool, dry environment away from direct sunlight and moisture. Recommended storage conditions:
- Temperature: Below 25°C (77°F); refrigeration (2–8°C) preferred for long-term storage
- Humidity: Below 60% relative humidity
- Container: Tightly sealed in original packaging or transferred to airtight, moisture-proof containers
- Shelf Life: Typically 24 months when stored under recommended conditions (verify per batch COA)
Get in Touch
The Extract Factory is your trusted manufacturer and global supplier of hirudin powder, offering consistent quality, regulatory-ready documentation, and flexible partnership models for brands, distributors, and formulation teams worldwide.
For inquiries, sample requests, technical data sheets, or custom specifications, please contact us directly:
Email: [email protected]
We look forward to supporting your next product development or procurement initiative with a natural anticoagulant ingredient you can trust.
