Polygonum Cuspidatum Root Extract is a plant-derived ingredient obtained from the root of Polygonum cuspidatum, a traditional botanical source widely recognized for its natural resveratrol content. Resveratrol, especially trans-resveratrol, is one of the key bioactive compounds associated with this extract and is commonly valued in nutraceutical, cosmetic, pharmaceutical, and functional food formulations.
Also known as Japanese knotweed, giant knotweed, Mexican bamboo, or Hu Zhang in Traditional Chinese Medicine, Polygonum Cuspidatum Root Extract has long attracted industry attention for its role in antioxidant-supportive formulations and modern botanical product development. It is frequently selected by manufacturers and formulators seeking a standardized plant extract with strong market recognition and broad application potential.
Product Overview
Polygonum Cuspidatum Root Extract is produced from the root portion of Polygonum cuspidatum through solvent extraction and subsequent standardization. Depending on the intended application, it is available in different assay levels, making it suitable for both high-potency formulations and general-purpose botanical ingredient systems.
This extract is commonly used as a source of resveratrol in products designed for skin care, dietary supplementation, and wellness applications. Its growing popularity is supported by the increasing demand for plant-based raw materials with traceable origin, consistent quality, and functional value.
Basic Information
Product Name: Polygonum Cuspidatum Root Extract
Latin Name: Polygonum cuspidatum
Part Used: Root
Extraction Type: Solvent Extraction
Active Ingredient: Resveratrol
CAS No.: 501-36-0
Molecular Formula: C14H12O3
Formula Weight: 228.24
Synonyms: Resveratrol, Polygonum Cuspidatum Extract, Giant Knotweed Extract, Polydatin, Polygonum Cuspidatum Root Extract
Test Method: HPLC
Available Specifications
- Resveratrol 50% — Brown yellow powder
- Resveratrol 98% — White powder
These specifications support different formulation needs, from standard botanical blends to high-purity applications requiring stronger active concentration and tighter quality control.
Source and Manufacturing Considerations
Polygonum Cuspidatum Root Extract is manufactured from selected raw plant material, with the root serving as the primary source of resveratrol-rich compounds. In professional ingredient supply, attention is typically placed on raw material selection, extraction efficiency, standardization, and batch consistency.
A reliable supply chain for Polygonum Cuspidatum Root Extract should emphasize:
- controlled botanical sourcing,
- standardized extraction procedures,
- active marker verification by HPLC,
- stable physical characteristics,
- and traceable production management.
For B2B buyers, these factors are critical when evaluating ingredient suitability for long-term manufacturing, private label programs, and export-oriented product lines.
Functional Value and Product Advantages
Polygonum Cuspidatum Root Extract is widely used because it offers both botanical credibility and formulation flexibility. Its functional profile makes it suitable for products targeting antioxidant positioning, anti-aging support, and general wellness enhancement.
Key Advantages
- Natural plant-based source of resveratrol
- Suitable for standardized extract formulations
- Compatible with a wide range of end-use products
- Strong market familiarity in nutraceutical and cosmetic sectors
- Available in different assay levels to support various formulation strategies
- Ideal for manufacturers seeking a recognizable botanical raw material
Technical and Formulation Relevance
Resveratrol-based raw materials are often chosen for their role in antioxidant-oriented formulations. Polygonum Cuspidatum Root Extract can be incorporated into products where botanical actives are needed to support skin care, wellness, and daily nutrition concepts.
From a formulation perspective, the extract may be used in:
- capsules and tablets,
- liquid supplement systems,
- powder blends,
- cosmetic serums and creams,
- functional food ingredients,
- and specialty health formulations.
When developing products with Polygonum Cuspidatum Root Extract, formulators typically consider dosage design, ingredient compatibility, color impact, and product stability. The extract’s assay level and powder appearance may influence how it performs in final applications.
Industry Applications
1. Dietary Supplements
Polygonum Cuspidatum Root Extract is commonly used in dietary supplement manufacturing as a botanical resveratrol source. It is suitable for capsule, tablet, and powder blend formats and is frequently included in formulations focused on antioxidant support and healthy aging concepts.
2. Cosmetics and Personal Care
In cosmetic applications, Polygonum Cuspidatum Root Extract is valued for its role in skin care products intended to support a more refined and protective botanical profile. It is often incorporated into anti-aging, brightening, and environmental stress-defense formulations.
3. Food and Beverage Ingredients
For food applications, the extract can serve as a functional botanical ingredient in products positioned around natural wellness and plant-based nutrition. Its inclusion should be managed according to formulation goals, taste profile, and product category requirements.
4. Pharmaceutical and Specialty Health Products
Polygonum Cuspidatum Root Extract is also used in pharmaceutical-related and specialty health product development where standardized herbal actives are required. Manufacturers often select it for its established botanical identity and active compound profile.
Why Buyers Choose Polygonum Cuspidatum Root Extract
Manufacturers, distributors, brand owners, and formulators often prefer Polygonum Cuspidatum Root Extract because it combines recognized raw material value with commercial flexibility. It is a practical ingredient choice for product lines that require:
- botanical authenticity,
- standardized active content,
- reliable supply for repeated production,
- and compatibility with international market trends.
Its wide recognition in both traditional and modern product categories also makes it a strategic ingredient for companies developing premium wellness and beauty formulations.
Quality and Testing
Quality assurance is an important factor in botanical ingredient procurement. Polygonum Cuspidatum Root Extract is typically evaluated using HPLC to verify the target active component. This supports more accurate standardization and helps ensure consistency across production batches.
For commercial buyers, consistent testing and controlled manufacturing help reduce formulation variability and support stable end-product performance. Standardized documentation, batch traceability, and appropriate packaging are all important considerations when sourcing this extract for export or large-scale production.
Storage and Handling
To maintain product integrity, Polygonum Cuspidatum Root Extract should be stored in a cool, dry, and well-sealed environment, protected from moisture, heat, and direct sunlight. Proper handling helps preserve powder stability and supports consistent use in formulation and manufacturing settings.
Commercial Supply Value
As demand for plant-derived actives continues to grow, Polygonum Cuspidatum Root Extract remains a valuable material for companies operating in dietary supplements, cosmetics, and specialty nutrition. Its standardized resveratrol content and broad application range make it particularly suitable for B2B procurement, OEM development, and private label production.
For buyers seeking a dependable botanical ingredient with established market relevance, this extract offers a strong balance of function, consistency, and formulation versatility.
