Curcumin 95% Turmeric Extract Powder for Joint and Inflammatory Health Formulas
Certified Curcuminoids Standardization from Food-Grade Turmeric Rhizome Extraction
Embodies the essence of pure, high-quality dietary supplement ingredients
Curcumin (Turmeric Extract, Curcuminoids 95%)
Turmeric Curcuminoid Extract for Joint Support

Curcumin
Purecium Curcumin is a standardized turmeric rhizome extract supplied as curcuminoids 95% by HPLC, available as Curcumin 95% Natural Turmeric Extract Powder, Turmeric 95% Curcuminoids and Turmeric Extract 95% Powder for joint, inflammatory, antioxidant and metabolic health formulas. The principal curcuminoid, curcumin (CAS 458-37-7, molecular formula C21H20O6, molecular weight 368.38 g/mol), is quantified on every batch by HPLC, and the extract is produced from non-GMO Curcuma longa rhizomes by food-grade solvent extraction. Allergen-free, gluten-free, non-GMO and vegan, it is packed in 25 kg drums with a 25 kg minimum order and full documentation for B2B buyers worldwide.
Product name: Curcumin (Turmeric Extract, Curcuminoids 95%)
Molecular formula: C21H20O6 (Curcumin)
Starting material: Curcuma longa rhizomes (solvent extraction)
Grade: Food Grade
Heavy Metals: Conforms to USP/EP limits
Pesticide residue: Conforms to USP/EP limits
Packing size: 25kg/drum
CAS#: 458-37-7 (Curcumin)
Molecular weight: 368.38 g/mol (Curcumin)
Source: Turmeric rhizome extract
Specification: Curcuminoids 95% min by HPLC
Country of origin: China
Residual solvent: Conforms to USP/EP limits
Allergen free/Gluten-free/Non-GMO/Vegan/Non-Irradiation:

Curcumin Overview
Curcumin is the principal curcuminoid of turmeric (Curcuma longa), the golden-yellow rhizome used for centuries in food and traditional wellness, and it is identified by CAS number 458-37-7, molecular formula C21H20O6 and molecular weight 368.38 g/mol. Turmeric extracts are standardized by total curcuminoid content, of which curcumin is the major component alongside demethoxycurcumin and bisdemethoxycurcumin. Curcuminoids 95% is the industry-standard concentration for supplement-grade turmeric extract.
For the dietary supplement industry, curcumin is used in joint health, inflammatory response, antioxidant, digestive and metabolic health formulas, and increasingly in bioavailability-enhanced formats. Purecium supplies curcuminoids 95% as Curcumin 95% Natural Turmeric Extract Powder, Turmeric 95% Curcuminoids and Turmeric Extract 95% Powder, sold exclusively as B2B raw materials for distributors, contract manufacturers, private-label producers and finished supplement brands.
Source & Ingredient Identity
Purecium Curcumin is produced from selected non-GMO Curcuma longa rhizomes, which are washed, dried and milled, then extracted with food-grade solvent (typically ethanol or ethyl acetate) to concentrate the curcuminoids, followed by purification and drying to a fine yellow-orange powder. The curcuminoid profile, residual solvent and heavy metal content are verified on every batch, and identity is confirmed by HPLC against curcumin reference standards.
The product is standardized to curcuminoids 95% minimum by HPLC, with the curcumin/demethoxycurcumin/bisdemethoxycurcumin ratio reported on the Certificate of Analysis. For B2B buyers, the critical purchasing checks are the total curcuminoid assay, the individual curcumin content, residual solvent (ethanol or ethyl acetate), and heavy metals, since turmeric roots are soil-grown and can accumulate lead and other metals.
Key Characteristics of Curcumin
1. Standardized curcuminoid content. The defining characteristic of turmeric extract is its guaranteed curcuminoid assay, typically 95% minimum by HPLC. This standardization ensures a known dose of the active curcuminoids in every batch, which is essential for finished-product consistency and label claims.
2. Well-studied anti-inflammatory and antioxidant profile. Curcumin is among the most studied botanical compounds for inflammatory response and antioxidant support; published clinical studies suggest benefits for joint comfort and mobility, and regulatory agencies including the FDA recognize turmeric and curcumin as GRAS in defined food uses. The NIH Office of Dietary Supplements and EFSA have both reviewed turmeric and curcumin for use in food and supplements.
3. Formulation flexibility with bioavailability options. Native curcumin has low oral bioavailability, which formulators address with piperine, phospholipid complexes, or micronized and other delivery technologies. The base extract is a fine yellow-orange powder that blends into capsules, tablets and powders, and it is non-GMO, allergen-free, gluten-free and vegan.
Curcumin Manufacturing
The manufacturing process begins with sourcing and identity testing of Curcuma longa rhizomes, followed by washing, drying and milling, extraction with food-grade solvent under controlled conditions, filtration and concentration, purification of the curcuminoid-rich fraction, and drying to a fine powder. The extraction solvent, temperature and drying parameters are process-controlled to preserve the curcuminoid profile and minimize degradation.
Each finished lot is tested by HPLC for total curcuminoids and the individual curcumin, demethoxycurcumin and bisdemethoxycurcumin content, together with identification, residual solvent, heavy metals, pesticide residues and microbial limits, all reported on the batch Certificate of Analysis. Each lot is traceable from rhizome lot to finished drum, and analytical methods follow current USP-NF and European Pharmacopoeia approaches for turmeric.
Applications of Curcumin
Joint health and inflammatory response is the primary application of curcumin. Mechanistically, curcumin modulates inflammatory mediators and supports the body's antioxidant defense through its phenolic structure; published clinical studies suggest benefits for joint comfort, mobility and post-exercise recovery. Typical supplement servings range from 500 mg to 1,500 mg of curcuminoids per day, often in divided doses.
Antioxidant, digestive and metabolic health form the second cluster. Curcumin is used in antioxidant formulas for its free-radical scavenging, in digestive wellness products as a botanical support, and in metabolic health blends where its effects on inflammatory pathways are studied. Because of low native bioavailability, many finished products combine curcumin with piperine (black pepper extract) or use phospholipid or other delivery systems, and formulators should position claims according to destination-market regulations.
Curcumin is compatible with capsules, tablets, sachets and powder blends. The bright yellow-orange powder will color formulations, which formulators should account for in product appearance, and it is commonly paired with ginger, Boswellia or omega-3s in joint formulas. For bioavailability-enhanced formats, Purecium supplies the base extract and supports formulation with technical guidance.
Manufacturing & Quality Control
Purecium Curcumin is produced in facilities operating under ISO 9001 and FSSC 22000 certified quality systems, with Kosher and Halal certification available. Analytical methods follow the current USP-NF and European Pharmacopoeia approaches for turmeric, with HPLC quantification of total curcuminoids and individual curcuminoids on every released batch.
Each commercial lot is fully traceable from rhizome lot to finished drum, and the batch is released only when identity, curcuminoid assay, residual solvent, heavy metals, pesticide residues and microbial results are all within specification. Alongside the CoA, Purecium provides the specification sheet, SDS, allergen and gluten statements, non-GMO declarations and stability data on request.
Curcumin for B2B Supplement Manufacturing
Purecium supplies Curcumin exclusively as a B2B raw material for distributors, contract manufacturers, private-label producers and finished supplement brands. The minimum order quantity is 25 kg; the powder is packed in 25 kg drums with food-grade aluminum-foil inner bags, and samples and full documentation are available before commitment.
For North American customers, inventory is staged at Purecium's US warehouse, enabling pickup or delivery within approximately two days. Global delivery covers Hong Kong, mainland China, the EU and other regions, with export documentation prepared for every shipment. Purecium also supports custom particle sizing and provides technical and regulatory communication, including bioavailability formulation guidance, to move curcumin from ingredient selection to commercial formulation.
Reviewed by the Chief Quality Assurance / Regulatory Affairs Specialist at Purecium for technical accuracy and regulatory alignment.
Curcumin Frequently Asked Questions (FAQ) for B2B Buyers
Q1. What is curcumin and what is it used for in dietary supplements?
Curcumin is the principal curcuminoid of turmeric (Curcuma longa), CAS 458-37-7, molecular formula C21H20O6, molecular weight 368.38 g/mol. It is used in joint health, inflammatory response, antioxidant, digestive and metabolic health formulas. Purecium supplies curcuminoids 95% turmeric extract as Curcumin 95% Natural Turmeric Extract Powder, Turmeric 95% Curcuminoids and Turmeric Extract 95% Powder, as 25 kg drum B2B raw material.
Q2. What is the difference between curcumin, curcuminoids and turmeric extract?
Turmeric extract is the concentrated botanical from Curcuma longa rhizomes; curcuminoids are the active polyphenol group within it, comprising curcumin, demethoxycurcumin and bisdemethoxycurcumin; and curcumin is the major individual curcuminoid. A 95% curcuminoid extract guarantees total curcuminoids at 95% minimum by HPLC, with the individual ratio reported on the CoA. Buyers should confirm which marker is being standardized before comparing quotations.
Q3. What are the curcuminoid levels in your different grades?
All three names on Purecium's offering are the same curcuminoids 95% minimum by HPLC product, sold under different trade descriptions: Curcumin 95% Natural Turmeric Extract Powder, Turmeric 95% Curcuminoids and Turmeric Extract 95% Powder. Each batch reports total curcuminoids (95% min), curcumin content (typically 70-80%), demethoxycurcumin and bisdemethoxycurcumin on the Certificate of Analysis.
Q4. How does curcumin work for joint and inflammatory support?
Curcumin modulates inflammatory mediators and supports antioxidant defense through its phenolic hydroxyl groups. Published clinical studies suggest that curcuminoid supplementation supports joint comfort, mobility and post-exercise recovery. These mechanisms are described in the biomedical literature and reflected in regulatory reviews of turmeric and curcumin by bodies such as the FDA (GRAS) and EFSA.
Q5. Why is curcumin bioavailability a concern and how is it addressed?
Native curcumin is poorly absorbed because it is rapidly metabolized and has low aqueous solubility. Formulators address this with piperine from black pepper, which inhibits curcumin metabolism, with phospholipid complexes that improve dispersion, or with micronization and other delivery technologies. The base curcuminoids 95% extract is the starting point for all of these formats, and Purecium can supply the base extract plus technical guidance on formulation.
Q6. Is curcumin safe and is it covered by regulatory recognitions?
Yes. Turmeric and curcumin are recognized by the FDA as GRAS in defined food uses, are covered by USP-NF and European Pharmacopoeia approaches for turmeric, and have been reviewed by EFSA and the NIH Office of Dietary Supplements for food and supplement use. As with any concentrated botanical, formulators should confirm destination-market practice for dosage and claim wording.
Q7. What is the typical dosage of curcumin in finished products?
Typical supplement servings range from 500 mg to 1,500 mg of curcuminoids per day, often divided into two or three doses. Bioavailability-enhanced formats may use lower curcuminoid loads per serving. Formulators should set label strength according to destination-market regulations and the finished-product positioning.
Q8. Why are heavy metals a critical specification for turmeric extract?
Turmeric is a soil-grown root crop, and roots can accumulate lead and other heavy metals from the soil. Because extraction concentrates the rhizome, heavy metals concentrate with the curcuminoids. Buyers should require heavy-metal testing to USP/EP limits on the CoA. Purecium tests every batch for heavy metals and supplies full reports on request.
Q9. Can curcumin be combined with other ingredients?
Yes. Curcumin is commonly paired with piperine (black pepper extract) for bioavailability, with ginger, Boswellia serrata or omega-3s in joint formulas, and with other antioxidants in general wellness blends. Formulators should account for the strong yellow-orange color of curcumin in product appearance and verify ingredient compatibility and blend uniformity.
Q10. Is curcumin vegan?
Yes. Purecium's curcumin is derived entirely from Curcuma longa rhizomes with food-grade solvent extraction and no animal-derived materials. It carries clear vegan, non-GMO, allergen-free and gluten-free statements and is suitable for vegan and vegetarian formulations.
Q11. What residual solvent levels should I expect in curcumin extract?
Food-grade turmeric extract is typically extracted with ethanol or ethyl acetate, and residual solvent must conform to USP/EP limits (for example, ethanol and ethyl acetate within their respective pharmacopeial limits). Purecium reports residual solvent on every Certificate of Analysis, and buyers should request the residue report as part of raw-material approval.
Q12. What quality documentation should I request when sourcing curcumin?
Request a current specification sheet, a batch-specific Certificate of Analysis showing identification, total curcuminoids and individual curcuminoid assay by HPLC, residual solvent, heavy metals, pesticide residues and microbial results, an SDS, allergen and gluten statements, and non-GMO declarations. Also request Kosher and Halal certificates, ISO 9001 and FSSC 22000 certificates, and stability data for registration.
Q13. What is the MOQ and lead time for curcumin from Purecium?
The minimum order quantity is 25 kg. The powder is packed in 25 kg drums with food-grade aluminum-foil inner bags, and samples and technical documentation are available before you commit. Standard production lead time is typically 7 to 15 working days after order confirmation, with faster dispatch for stocked items. For North American customers, Purecium holds inventory at its US warehouse, enabling pickup or delivery within approximately two days.
Q14. How should curcumin be stored, and what is the shelf life?
Store curcumin in tightly sealed original containers in a cool, dry place below 25 degrees Celsius, protected from light and moisture. The powder is stable under these conditions, and shelf life is generally 36 months from the date of manufacture. Each shipment's CoA states the production date and expiry date for inventory planning.
Q15. Why should we source curcumin from Purecium?
Purecium supplies curcuminoids 95% turmeric extract with HPLC-verified total and individual curcuminoid assays on every batch, produced from non-GMO Curcuma longa rhizomes in ISO 9001 and FSSC 22000 certified facilities with Kosher and Halal certification available. Every batch is released with a full Certificate of Analysis including residual solvent, heavy metal and pesticide results, an SDS and supporting documentation. The minimum order is 25 kg, inventory is staged at our US warehouse for two-day pickup, and global delivery covers Hong Kong, mainland China, the EU and beyond. For long-term supply relationships, Purecium provides consistent quality, batch traceability, regulatory documents and direct technical communication.
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