| HS Code | 420773 |
| Botanical Name | Polygonum cuspidatum |
| Plant Part Used | Root |
| Main Active Compound | Resveratrol |
| Appearance | Brownish-yellow powder |
| Solubility | Soluble in ethanol, partly soluble in water |
| Extraction Method | Solvent extraction |
| Standardization | Commonly standardized to resveratrol content (e.g., 50%) |
| Typical Use | Dietary supplements and cosmetics |
| Country Of Origin | China |
| Taste | Bitter |
| Shelf Life | 2 years when stored properly |
| Storage Conditions | Cool, dry place, away from direct sunlight |
| Cas Number | 501-36-0 |
| Latin Family | Polygonaceae |
As an accredited Polygonum Cuspidatum Root Extract factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | White, resealable foil pouch labeled “Polygonum Cuspidatum Root Extract,” 100g net weight, batch number, and expiration date printed below. |
| Shipping | Polygonum Cuspidatum Root Extract is typically shipped in sealed, food-grade drums or bags to preserve freshness and prevent contamination. Shipments are packed securely and clearly labeled with product details and safety information. The extract should be stored in a cool, dry place, away from direct sunlight, during transit. |
| Storage | Polygonum Cuspidatum Root Extract should be stored in a tightly sealed container, away from direct sunlight and moisture. Keep it in a cool, dry, and well-ventilated area, ideally at room temperature or below 25°C (77°F). Avoid exposure to extreme temperatures and incompatible substances to maintain its stability and potency. Use appropriate personal protective equipment when handling. |
Competitive Polygonum Cuspidatum Root Extract prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
In our factory, we have handled Polygonum Cuspidatum Root Extract for years, watching its role grow from a niche botanical to a staple in global supply chains. Known also as Japanese Knotweed, this perennial herb’s thick, knotted rootstock yields an extract that attracts attention in the nutraceutical, cosmetic, and food industries. We process our extract using roots collected during peak harvest, so activity levels remain consistent batch after batch. Our model offering emphasizes high-resveratrol content, with our most demanded specification reaching 98% purity by HPLC, though we do cater to requests for lower strengths depending on use plans or price targets. Physical forms usually range from fine to coarse powders, as requested for customer applications.
In practice, Polygonum Cuspidatum flourishes in mountainous regions with a cool climate and abundant rainfall. Years of hands-on sourcing taught us the importance of tracing each batch back to its field, particularly after worldwide growth in demand led to unstable quality levels from uncontrolled wild harvests. Often, reports of adulteration arise from rushed, opportunistic harvesting and a lack of clear, reliable chain of custody. By working with contracted fields and local gatherers under strict guidelines, we ensure every kilogram enters our plant with full documentation on collection date, location, and handling methods.
Resveratrol stands as the flagship compound in Polygonum Cuspidatum Root Extract. Customers pursuing high-resveratrol content often ask about our extraction and purification steps. Our extraction uses ethanol-water mixtures under controlled temperature, which preserves the phenolic structure of resveratrol and minimizes unwanted byproducts. After filtration and concentration, we use column chromatography for fractionation. Through daily monitoring and batch tests, we confirmed 98% HPLC-pure extracts deliver the consistency most customers want for finished supplement capsules and tablets. Meanwhile, other fractions contain piceid, emodin, polydatin, and smaller amounts of anthraquinones, useful for customers diversifying product portfolios.
Polygonum Cuspidatum Root Extract separates itself from other sources, particularly synthetic resveratrol and that made from grape skins or red wine. While resveratrol can be synthesized, our customers tend to avoid that material due to regulatory and consumer perceptions. Extracts derived from grapes feature lower resveratrol content and are more difficult to standardize, since grape growing and harvest conditions cause major swings year by year. Because Polygonum Cuspidatum accumulates higher, more stable levels of resveratrol in its roots, we reach purer, single-source extracts without costly purification tech or chemical synthesis.
Additionally, our plant-based extract is free from allergens and GMO risk, two factors keenly followed by supplement formulators targeting vegan or hypoallergenic claims. Over 80% of the resveratrol on the market traces its roots—literally—to Polygonum cuspidatum, with documented supply chain records. Synthetic grades can leave impurity residues, or be rejected due to ambiguous raw material labeling. We observed these scenarios leading to costly reformulations or even recalls for brands trying novel sources. For compliance and acceptance, our experience shows Polygonum Cuspidatum stands firm.
Every application we serve starts at the factory lab bench. In the nutraceutical field, our 98% resveratrol powder enters capsule and tablet lines thanks to its fine, off-white appearance and high flow properties. We see daily orders for 50-100 kg lots heading to contract supplement brands across North America and Europe. Meanwhile, lower-purity extracts (20%-50% resveratrol) see interest from soft drink, functional food, and chocolate companies seeking to make antioxidant claims. Blending trials in our own test kitchen revealed no off-tastes or clumping issues, as long as the powder remains moisture-tight during transport. Formulators often contact us for bulking blends as well.
Cosmetic manufacturers prize the same ingredient for anti-aging serums and creams. Our technical team cooperates with customers who measure color, odor, and dispersibility. Since percent purity influences both skin feel and regulatory claims, we tailor lots to the needs of each batch, shipping microbatches for pilot runs if development teams need stability or efficacy testing. The root extract, unlike synthetic analogues, carries polyphenols and flavonoids beyond resveratrol alone. Cosmetic formulators working with our in-house chemists discovered the broader antioxidant profile appeals to premium cosmetic brands, especially those focused on natural marketing angles.
Every day, our lab staff runs thin-layer chromatography, colorimetric checks, moisture analysis, and HPLC on production samples. Achieving tight standards matters most when our customers require disclosure of reference standards or batch-specific documentation. We encountered variability from some not fully extracting or purifying Polygonum roots, which left substantial residual material. Such inconsistencies get caught fast when manufacturing runs create more dust than expected, or present a faint earthiness in flavor-sensitive formats. Pursuing quality at scale calls for thorough powder dust control, precise solvent recovery, and close tracking of temperature during drying.
No batch leaves our plant without documentation. Each certificate identifies extraction solvent ratios, batch origin, full specification analysis, and, when relevant, contaminant screening for heavy metals, microbes, and pesticide residues. Years of working with Japanese Knotweed exposed us to wide swings in root input quality. Early in our operations, gaps in root grading led to variable yields. Now, with continuous feedback loops from suppliers and automated incoming material tracking, we identify outlier material at the dock, not after full run completion.
Polygonum Cuspidatum receives notoriety outside the supplement industry as an invasive weed in some Western countries. Some competitors exploit this angle for lower pricing, gathering wild plants indiscriminately. Our team chose a cooperative approach with local land managers, combining planned harvesting with native habitat protection. Seasonal rotation and post-harvest planting assure roots regrow, providing next year’s supply while avoiding soil depletion. We support community engagement efforts, enabling landholders to benefit from removing unwanted stands while avoiding overharvest or ecosystem imbalance.
Sustainable harvesting influences our relationships up and down the supply chain. Traceability requirements keep us alert for accidental mixing with inferior material or over-mined sites. Local training sessions, organized in collaboration with academic botanists, reduce misidentification risks. Through these partnerships, harvesters gain stable income, and ecological balance persists. Our audits, conducted at regular intervals, cover plant populations and soil health.
Customers switching from other suppliers often cite our batch-to-batch reliability and willingness to explain extraction and testing methods. Many learned the hard way that lapses in supplier oversight lead to costly contaminant issues, flavor inconsistencies, or missed specifications in high-stakes finished goods. Our company invested in modern low-temperature extraction and solvent recovery equipment. This decision came after years spent troubleshooting issues like off-flavor, brown coloration, and batch-to-batch yield swings. Consistent investment in plant upgrades keeps us aligned with evolving customer requirements, especially as regulatory bodies increase scrutiny of botanical raw materials.
We built our technical support around direct experiences with manufacturers in developed and emerging markets. New supplement developers, small-batch skincare producers, and legacy contract food formulators all rely on actual test data, fast communication, and transparent practices. In cases where customers need to meet USP, EP, or other international pharmacopeia monographs for resveratrol, we provide lineage documentation and composition statements. Storage, shelf life, particle size, and dispersibility can all be adapted, since not every end use matches a standard resveratrol application. Custom solutions arise from practical needs, not on-paper promises.
Processing Polygonum cuspidatum into a reliable extract presents daily decisions, especially since supply quality depends on both nature and nurture. Weather shifts, transport delays, and new pesticide regulations force schedule changes. We solve these with excess onsite storage, dual-path extraction setups, and close supplier communication. Another persistent challenge, moisture reabsorption, led us to invest in double-sealed PE and aluminum drum packaging. Shipping takes priority, particularly in rainy months. Delays have the potential to degrade extract quality via caking or hydrolysis, so we ship fresh from drying into long-haul containers within twelve hours.
Younger competitors sometimes skip post-extraction drying, or rush batches, leading to spoiling faster in humid climates. After auditing our warehouse processes, we moved extraction and drying closer to each other to cut transfer time. Our logistical team also fine-tuned batch sizes and packaging methods, using smaller container lots for sensitive export markets. In turn, our technical support dedicates time to customer quality testing and documentation, knowing how a single weak link derails entire production chains.
Polygonum Cuspidatum Root Extract now faces heightened scrutiny from authorities worldwide. Traditional medicine use offered a de facto safety history, yet modern oversight demands more. Following EFSA and FDA alerts, several regions call for purity verification, contaminant analysis, GMO statements, and reports on process residue. We run regular line checks for solvent residues and marker compounds. As inspection burdens increase, our customers gain confidence knowing we respond with documented analytical results and established processes, not shortcut fixes.
Differentiation from other botanical extracts also comes through global food safety system certification, including HACCP and food GMP audits. These insist on designation of cleaning, waste disposal, and workplace safety standards. We keep records accessible, anticipating regulatory spot checks or third-party inspections. Quality once existed mainly in flavor and color claims; now product safety, source, and test records affect downstream customer distribution rights and brand equity.
Resveratrol trends have shifted the conversation about Polygonum Cuspidatum root extract, pushing demand beyond traditional Asian herbal medicine. Beauty brands incorporate it as an anti-aging and blemish control agent, since antioxidant marketing resonates with health-focused consumers. Beverage and functional snack makers openly advertise resveratrol levels, assuming the root extract will meet published claims with each batch.
Emerging research on polyphenols and cardiovascular health, cellular aging, and brain function bring renewed interest. Yet claims by brands without solid raw material testing led to investigation by consumer advocacy groups and regulatory bodies. Our factory has received requests from research institutes for reference material, and academic labs demand precisely documented provenance for clinical or analytical studies. These trends shape our commitment to ongoing batch testing and recordkeeping, so both consumer goods manufacturers and researchers receive raw materials matching their published standards.
Our technical services team cooperates directly with customer development teams, providing analytical reports, solubility profiles, and pilot run samples so that formulators can predict performance in their matrix. Chilled water, dairy protein shakes, pudding, and even confectionary fillings have run through our test lab. If graininess, settling, or color shifts arise, we adjust extraction or milling parameters. Rather than imposing one-size-fits-all specs, we use customer feedback to guide continuous improvement, updating standard operating protocols quarterly.
Each innovation stems from actual end user feedback. Lower-purity extracts, while less glamorous, offer advantages in broader antioxidant blends or for price-sensitive applications. Higher-purity material goes direct to premium capsules, tablets, and cosmeceutical lines demanding full transparency and consistent test results. By comparing customer returns and production run data, we improve both our process and supply partners, ensuring stable long-run buying relationships and prompt responses when challenges jag production timelines.
Polygonum Cuspidatum sourcing and production does not occur in a vacuum. Weather, port congestion, or shifting international trade rules affect lead times and landing costs. To buffer these, we maintain forward inventory in bonded warehouses in major export regions. Teams coordinate shipment bookings directly with our regular freight forwarders, cutting wait times and avoiding handoffs to untested carriers. Trans-shipping, relabeling, or repackaging creates exposure to contamination or mislabeling. We minimize these points of risk by managing full container rates or working with trusted consolidation partners.
Long experience tells us that the timing of harvest—between May and September—drives actual root availability. Off-season batches show the effects of long storage, so we stagger root purchase contracts and rotating incoming lots. In emergency cases, our management has shipped airfreight for urgent pharma-grade orders, absorbing the cost as an investment in partner trust. Logistics professionals now demand transparency not only for cost but for traceability from root to powder.
Recent years brought new extraction technologies, like membrane filtration or supercritical CO2, which promise purer product with less solvent use and minimal residual waste. Clients watch these developments closely, balancing innovation against stability and past batch test profiles. Our team trialed several such techniques, finding some effective for boosting marker compound purity, though not always practical for cost-sensitive segments or where regulatory status of new process solvents remains uncertain.
We remain committed to evolving as science, regulation, and market needs drive change. Techniques supporting full-spectrum extracts or novel marker profiles, such as combining resveratrol with polydatin, show promise for natural wellness or advanced skincare formulations. Our R&D pipeline focuses on both improving established processes—cutting total cycle time and boosting recovery efficiency—and quickly responding as clients explore new market segments or label initiatives. Shared learning with partners shortens the gap between field and finished product.
Our years working directly with Polygonum Cuspidatum root extract reinforced a central truth: real value comes from attention to detail, consistent supply, and open knowledge exchange. While consumer trends shift and regulatory scrutiny mounts, the foundations remain personal relationships, field-to-factory competence, and willingness to address problems quickly. There’s no substitute for hands-on experience with every harvest, every batch, and every shipment.
By focusing on long-term, transparent supply contracts, robust plant investments, and sustainability-driven partnerships, we built reliability into every stage—from harvest to extraction to packaging and logistics. Suppliers and customers alike benefit from shared standards, immediate feedback, and rigorous adherence to both safety and performance targets. Through years of growth, the real proof has remained in the steady stream of safe, versatile, and high-quality Polygonum Cuspidatum root extract moving from our plant to finished goods around the world.
