Japanese knotweed powder extract 10:1 (Polygonum cuspidatum)
Japanese knotweed powder extract 10:1 (Polygonum cuspidatum)
Organic quality (IFOAM-recognised) is currently not available for powder extracts.
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Estimated delivery time: after receipt of the raw material, date confirmed with the order confirmation
Available in sizes up to 250 g (depending on current availability and unit price, the quantity may be smaller).
Scope of delivery: sample with example CoA, TDS, SDS and CDS. The example CoA is the CoA from the document bar and is not batch-specific. Development samples are intended for development, not for use in end products. One development sample per customer and article.
With the sample you receive a code that credits the sample price towards your next purchase.
Delivery time: powder extracts are prepared as samples once the raw material has arrived. This can take several weeks; we state the date after receipt of the order.
Second step: packs from 5 kg, price after login. The sample price is credited.
Third step: production quantities above 5 kg are made to order. Quantity, packaging and certification via the industrial enquiry.
Organic (IFOAM) is currently not available for powder extracts.
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Ingredients (1223/2009) Cosmetics Regulation
Ingredients (1223/2009) Cosmetics Regulation
Composition (1169/2011) Food Regulation
Composition (1169/2011) Food Regulation
Technical documentation
Technical documentation
TDS, SDS, CDS and example CoA available after login
Compliance
Compliance
Variants with glycerin or sunflower oil are available in organic quality according to an IFOAM-recognised standard (EU Organic Regulation (EU) 2018/848), selectable via the “Quality” option. Organic is currently not available for powder extracts. Certificate DE-ÖKO-001.276-0076919.2026.001, Kiwa BCS Öko-Garantie GmbH, valid until 31 January 2028. This covers COSMOS and NATRUE; USDA Organic is possible under the EU-US equivalence arrangement. Industrial quantities above 5 kg via the industrial inquiry.
Specification
Specification
CAS number: 1010117-72-2
Use: This product is intended exclusively for the cosmetics industry. Not suitable for food applications.
Recommended use level: 0.5-2 %
Packaging: tube bag / plastic container
Visual evaluation: fine powder
Colour evaluation: light brown
Origin: Europe and the rest of the world. Regional goods from controlled organic cultivation are preferred. Please note that this product contains biological ingredients whose biodegradability cannot be tested. Such ingredients were therefore not taken into account in the assessment.
pH: 4–8 (in aqueous solution)
Density:
Refractometry:
Preservative: none added
Microbiology: Total plate count ≤ 1,000 CFU/g; yeasts and moulds ≤ 100 CFU/g; E. coli, Salmonella, S. aureus: absent (manufacturer's certificate per batch)
Shelf life: When stored dry between 10 and 30°C in the original sealed container: 24 months.
Flash point: Not applicable (solid)
Test scope, methods and specification per batch: see the example CoA under Documents. The batch CoA accompanies every delivery.
Shipping information
Shipping information
The product will be sent to you depending on your customer status.
Disclaimer
Disclaimer
It cannot be excluded that color changes may occur during storage depending on temperature. This is a raw material intended for the manufacture of cosmetics. The images shown here serve to illustrate the powder and are to be considered as approximate only. It is guaranteed that the products meet the specifications listed on their label, packaging and/or certificate of analysis at the time of shipment or for the expressly stated duration. CONIUNCTA® disclaims all express or implied warranties, including but not limited to implied warranties of merchantability or fitness for a particular purpose, with respect to our products or related information. The customer is solely responsible for determining the suitability of CONIUNCTA® products for their own applications, uses and processes, including ensuring that no third-party intellectual property rights are infringed. CONIUNCTA® shall not be liable for incidental, consequential, indirect, exemplary or special damages of any kind arising from the use or failure of the products. All sales are subject to the full terms and conditions of sale of CONIUNCTA®. Prices may be changed without prior notice and CONIUNCTA® reserves the right to modify or discontinue products without prior notice.
How do I obtain a sample?
How do I obtain a sample?
Two routes. For development, select the “Development sample” variant at €49 on the product page and order it through your customer account. The sample comes with an example CoA (not batch-specific), TDS, SDS and CDS; it is intended for development, not for use in end products. One sample per customer and article; for PRO extracts the sample is considerably smaller than 250 g (approx. 50 g). With the sample you receive a code that credits €49 towards your next purchase. For industrial quantities above 5 kg, use the industrial inquiry on the product page. You receive a quotation with quantity, quality and base.
FAQ
FAQ
Please read our FAQ.
Japanese knotweed powder extract (INCI: Polygonum Cuspidatum Root Extract, CAS 1010117-72-2) is a plant-based dry extract from Polygonum cuspidatum at a 10:1 ratio. The lead marker is trans-resveratrol, accompanied by further stilbenes and anthraquinones in the phytochemical profile. CONIUNCTA supplies the raw material as a fine, light brown powder for applications in cosmetics. This product is not intended for food use.
Production
Extraction is carried out with ethanol and water. The extract is standardised at a 10:1 concentration ratio without any carrier and supplied without preservatives. The product is Designed in Germany.
Specification
- INCI: Polygonum Cuspidatum Root Extract
- CAS: 1010117-72-2
- Lead marker: trans-resveratrol (calculated range 2–22.5 mg/g per CDS)
- Appearance: fine powder, light brown
- Extract ratio: 10:1
- Solubility: dispersible in water
- Carrier and preservation: no carrier (100 % dry extract), unpreserved
- Density: not specified (powder)
- pH value: 4–8 (in aqueous solution)
- Origin: Europe and the rest of the world, regional certified organic material preferred
- Vegan: yes
- Shelf life: 24 months when stored dry between 10 and 30 °C in the original sealed container
- Packaging: flat pouch or plastic container
Application in cosmetics
The recommended use concentration is 0.5 to 2 %. As a water-dispersible powder with trans-resveratrol as the lead marker and antioxidant properties, the extract is used in formulations for mature skin and in anti-aging concepts, for example in facial serums and eye creams.
Application in food
This product is not intended for food use. The material contains no carrier and is supplied unpreserved and vegan.
Frequently asked questions
What is Polygonum cuspidatum powder extract?
It is a 10:1 dry extract from Japanese knotweed (Polygonum cuspidatum) with the INCI name Polygonum Cuspidatum Root Extract. The lead marker is trans-resveratrol.
Which lead marker is the focus for Polygonum cuspidatum?
The lead marker is trans-resveratrol, with a calculated range of 2–22.5 mg/g per the CDS. Further stilbenes and anthraquinones are documented alongside it.
Is the extract dispersible in water?
The fine powder is dispersible in water and can be incorporated into both aqueous and powder-based systems.
Is the extract vegan and preserved?
The raw material is vegan and supplied without preservatives. The extract contains no carrier (100 % dry extract, manufacturer's statement).
How can I buy Polygonum cuspidatum powder extract?
Supply is B2B. Prices and volume tiers are available after login, and documents such as TDS, SDS and example certificate of analysis are available after login; the batch certificate of analysis is included with every delivery.
Primary Marker: Resveratrol (trans-)


