Description
B2B BOTANICAL INGREDIENT · SPECIFICATION & COA SUPPORT
Curcumin Extract Powder Standardized to 95%
LongBio supplies Curcuma longa root extract powder standardized to 95% curcumin for B2B formulation. Buyers can review the assay basis, specification and current offered-lot COA before sample or order approval.

TYPICAL SPECIFICATION
COA-Backed Specification
| Botanical identity | Curcuma longa L. |
|---|---|
| Plant part | Root / rhizome |
| Form and colour | Fine orange powder |
| Assay | Curcumin 95% by UV; representative result 95.11% |
| Particle size | 98% through 80 mesh |
| Loss on drying | <=5.0%; representative result 3.08% |
| Ash | <=5.0%; representative result 2.13% |
| Representative record | Representative COA batch LXJH250318, manufactured 18 May 2025 |
| Shelf life | Two years when stored properly |
The values above include limits and representative results from reviewed batch LXJH250318. They are not a substitute for the current batch document. Final supply is governed by the approved order specification and shipment COA.

BUYER DECISION GUIDE
When to Select the 95% Curcumin Grade
Select this grade when the purchasing specification requires Curcuma longa root extract quantified to 95% curcumin by UV. Do not treat turmeric powder, ratio extracts and standardised curcumin grades as interchangeable. Confirm botanical identity, plant part, analytical method and the offered-batch result before approval.
- Evaluation samples: typically 10-20 g, subject to stock
- Regular MOQ: typically 1 kg
- Common packing: 1 kg bag; bulk packing confirmed separately
- Typical lead time: 7-15 working days after order confirmation
- Private-label and specification consultation available

QUALITY & DOCUMENTATION
Batch Verification for B2B Qualification
The reviewed representative COA records 95.11% curcumin by UV, 3.08% loss on drying and 2.13% ash, together with particle-size, heavy-metal and microbiological controls. Buyers should request the current offered-batch COA and may arrange independent testing before a commercial order.
Beyond “95%” — What Curcumin Buyers Should Actually Check
Application / Formulation Example: Curcumin 95% is the workhorse of joint and inflammatory-support formulas, but the “95%” figure alone doesn’t tell the whole story. The two numbers that matter: curcuminoid content (95%) and the curcumin:demethoxycurcumin:bisdemethoxycurcumin ratio (typically ~77:17:6 in natural turmeric). For bioavailability, standard practice pairs 500 mg curcumin 95% with 5–10 mg piperine, or uses a patented bioavailable form (phytosome/lipid-based) where the brand claims enhanced absorption.
Spec Comparison:
| Parameter | Our Curcumin 95% | Low-Grade “Curcumin” (70–80%) | Unstandardized Turmeric Powder |
|---|---|---|---|
| Curcuminoids | ≥95% (COA) | 70–80% | 2–5% |
| Curcumin ratio | Documented (77:17:6-type) | Often undocumented | N/A |
| Extraction | Controlled solvent, residual tested | Varies | Raw spice |
| Application | Nutraceutical dose-efficient | Compromised dosing | Culinary only |
Market Context: Turmeric/curcumin is one of the largest botanical extract categories globally, with demand sustained across joint, metabolic, and cognitive health. In a mature category, the differentiation shifts to documented ratios, batch-level COA, and application-ready formats. (Qualitative trend.)
FREQUENTLY ASKED QUESTIONS
Curcumin Extract Purchasing FAQ
What specification defines Curcumin Extract Powder 95%?
The evidence-backed grade is Curcuma longa root extract powder standardised to 95% curcumin by UV.
Which plant part is used?
Representative COA LXJH250318 identifies Curcuma longa root as the source material.
What COA evidence supports the 95% claim?
Representative batch LXJH250318 recorded 95.11% curcumin by UV against a 95% specification. Commercial release is governed by the COA for the supplied batch.
Can buyers request a sample and current batch COA?
Yes. Sample availability and the current offered-batch COA are confirmed against the requested quantity, destination market and specification.
How should product and contaminant tests be reviewed?
Do not assess Curcumin 95% by UV; representative result 95.11% in isolation; particle size, moisture or drying data and market-relevant safety limits can also affect acceptance.
When should MOQ be reconfirmed?
Confirm MOQ and timing on the live quotation because stock position, testing, packing and destination requirements can change both.
Can the specification or packaging be customised?
Particle size, packing and selected quality parameters may be reviewed case by case. Feasibility, test method and MOQ are confirmed before quotation.
How This Grade Differs
Curcumin Extract Powder 95% is qualified using botanical identity: Curcuma longa L.; plant part: Root / rhizome; offered grade: Curcumin 95% by UV; representative result 95.11%. Its purchasing definition is anchored to Curcumin 95% by UV; representative result 95.11%; alternatives must be compared on marker target and analytical basis.
Compare these related grades before approval:
For a substitution review, compare botanical identity, plant part, assay target, analytical method, physical form and the current offered-batch COA.
Curcumin Extract Powder 95% Qualification Snapshot
This snapshot is taken from the specification evidence displayed on this page. Confirm that the quotation, specification and current offered-batch COA describe the same grade before approval.
| Botanical identity | Curcuma longa L. |
|---|---|
| Plant part | Root / rhizome |
| Assay | Curcumin 95% by UV; representative result 95.11% |
| Particle size | 98% through 80 mesh |
| Loss on drying | <=5.0%; representative result 3.08% |
Three Checks Before Ordering
- Match botanical identity and plant part.
- Match assay target, unit and analytical method.
- Review the current batch data and destination-market documents.
Continue with Standardized Botanical Extracts, the COA review checklist, or the specification comparison guide.
Request COA, Sample or Quotation
Send the target assay, application, annual volume, destination country and required test limits. LongBio will confirm the matching grade, document availability and quotation.





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