Curcuma longa L. · Family: Zingiberaceae · Rhizome Oleoresin
Turmeric oleoresin is bought by two entirely different buyers — one wants colour strength, the other wants curcuminoid content — and those are separate specifications that do not track each other. We declare both, plus volatile oil and residual solvent, so you can tell which product you are being quoted. India is the origin of record for turmeric. CoA-backed supply.
One product, two specifications, and the difference costs money
Turmeric oleoresin is the solvent-extracted concentrate of Curcuma longa rhizome — the whole extractable fraction of the spice, carrying both the curcuminoid pigments that give turmeric its colour and the volatile oil (principally turmerones) that gives it aroma. India produces the large majority of the world's turmeric and is the origin of record for this material.
The commercial confusion on this ingredient is worth resolving before you request a quotation, because two different buyers ask for the same words and mean different things. A food colour buyer wants colour strength — how much yellow it delivers per kilo in the application. A nutraceutical buyer wants total curcuminoids by HPLC, because that is what their finished-product dose is built on.
Those two are related but they do not track each other reliably. Colour value is affected by the whole pigment fraction and by how it behaves in the matrix; curcuminoid assay is a defined analytical number. A material selected for colour performance is not automatically the strongest on curcuminoid assay, and vice versa. We declare both on every certificate rather than quoting one and letting the buyer assume it covers the other.
Two further declarations matter on any oleoresin and are frequently missing. Volatile oil content is what distinguishes an oleoresin from purified curcumin — it carries the aroma, and a low figure means you are drifting toward a colour extract rather than a spice oleoresin. And residual solvent is the defining QC control for solvent-extracted products: we state the solvent used and test every batch by GC.
What is in turmeric oleoresin
The principal curcuminoid and the compound the nutraceutical market is built on. Reported as part of total curcuminoids by HPLC.
The two companion curcuminoids. Together with curcumin they make up the total curcuminoids figure — which is why an assay stating only "curcumin" is ambiguous unless the basis is named.
ar-Turmerone and related sesquiterpenes forming the aromatic fraction. Their presence is what makes this an oleoresin rather than a purified colour, and the content is declared per batch.
The wider extracted fraction of the rhizome, contributing body and dispersion behaviour.
Where a grade is standardised to a fixed colour value or curcuminoid content, the carrier used is named with its inclusion level.
Purified curcumin is a different product made by further processing this material — higher assay, no volatile oil, different price. Quoted separately.
Why formulators specify a dual-declared turmeric oleoresin
Total curcuminoids with the basis stated, so a nutraceutical dose can be built on the number rather than on a colour claim.
Reported separately for colour buyers, because colour performance and curcuminoid assay are different measurements that do not track each other.
The line that separates a genuine spice oleoresin from a colour extract. Declared per batch rather than assumed.
The defining control on any solvent-extracted oleoresin. Solvent named, limits stated, tested every batch.
India produces the large majority of world turmeric — this is one of the few ingredients where Indian origin is the industry default rather than a claim.
Standard oleoresin is oil-soluble; polysorbate-based water-dispersible grades are available for beverage and aqueous systems.
These are functional and physico-chemical properties of the actives; SV Botanica does not make medical or therapeutic claims for this ingredient.
Colour grades, nutraceutical grades and dispersible forms
| Grade | Standardisation | Form | Best For | Solubility |
|---|---|---|---|---|
| Turmeric Oleoresin (Colour Grade) Colour-led | Standardised to colour value; curcuminoids also reported | Dark orange-red viscous liquid | Food colour, curry powders, sauces, ready meals | Oil-soluble |
| Turmeric Oleoresin 25% Standard | Total curcuminoids NLT 25% by HPLC | Dark orange-red viscous liquid | Seasonings, blends, general food use | Oil-soluble |
| Turmeric Oleoresin 30–40% High-assay | Total curcuminoids NLT 30% / 40% by HPLC | Dark reddish brown viscous liquid | Nutraceutical feedstock, concentrated applications | Oil-soluble |
| Turmeric Oleoresin WD Water-dispersible | Polysorbate-based; curcuminoids and colour reported | Orange dispersible liquid or paste | Beverages, dairy, aqueous systems | Water-dispersible |
| Curcumin 95% Quoted separately | Purified curcuminoids — a different product | Orange-yellow crystalline powder | Supplements, high-dose nutraceutical formats | Poorly water-soluble |
The last row is listed to prevent the most expensive misunderstanding on this ingredient. Curcumin 95% is a purified powder produced by further processing oleoresin — it carries no volatile oil, behaves differently in formulation, and sits at a different price entirely. If you are dosing a supplement on curcuminoid content, that is usually the product you want; if you are colouring or flavouring a food, the oleoresin is. Every grade declares total curcuminoids by HPLC, colour value, volatile oil content and residual solvent, whichever basis the grade is sold on, so the two buyer types can read the same certificate. Carrier and inclusion level are named on standardised grades.
Turmeric oleoresin is bought in four forms. The standard oil-soluble oleoresin is the stocked item; the others are sourced against a confirmed order.
| Form | What it is | Specification basis | Availability |
|---|---|---|---|
| Standard oil-soluble oleoresin | Solvent-extracted concentrate of Curcuma longa rhizome, solvent removed | Total curcuminoids by HPLC; volatile oil; residual solvent by GC | Stocked; colour and nutraceutical grades |
| Deodorised turmeric oleoresin | Volatile oil stripped after extraction to remove the turmeric aroma, leaving colour and curcuminoids | Curcuminoids by HPLC; volatile oil reported as low; residual solvent | On request; colouring where turmeric flavour is unwanted (dairy, confectionery, beverages) |
| Water-dispersible | Polysorbate-based dispersion of the oleoresin for aqueous systems | Curcuminoids and colour value on the finished blend | On request; beverages, dairy, sauces |
| Granulated / encapsulated | Oleoresin spray-dried or plated on a food-grade carrier as a free-flowing powder | Curcuminoids declared on the carrier basis; carrier named | On request; dry mixes, seasoning blends, tablets |
Turmeric oleoresin is a colour and flavour ingredient; if the target is a high-purity nutraceutical active, the product is curcumin 95%, not oleoresin. For the difference see the turmeric and curcumin extract buyer’s guide.
Full product specification for Turmeric Oleoresin, curcuminoids 25%. Values are specification limits, not batch results; a batch-specific CoA is issued per shipment.
| Parameter | Specification / Limit | Method |
|---|---|---|
| Botanical Source | Curcuma longa L. | — |
| Plant Family | Zingiberaceae | — |
| Part Used | Dried rhizome | — |
| Country of Origin | India | — |
| Appearance | Viscous liquid | Organoleptic |
| Colour | Dark orange-red to reddish brown* | Organoleptic |
| Odour & Taste | Characteristic of turmeric, aromatic | Organoleptic |
| Total Curcuminoids (% w/w) | NLT 25 — basis stated on certificate | By HPLC |
| Curcumin / DMC / BDMC ratio | Reported on request | By HPLC |
| Colour Value | Declared per batch | Spectrophotometric |
| Volatile Oil (% v/w) | Declared per batch (typically 15–25) | Distillation |
| Solubility | Oil-soluble; water-dispersible grade available | — |
| Carrier / Diluent | Declared with inclusion level (standardised grades) | Declaration |
| Moisture (% w/w) | NMT 1.0 | Karl Fischer |
| Residual Solvent | Solvent named; within permitted limits — every batch | By GC |
| Lead (ppm) | NMT 1.0 | ICP-MS |
| Arsenic (ppm) | NMT 1.0 | ICP-MS |
| Cadmium (ppm) | NMT 0.3 | ICP-MS |
| Mercury (ppm) | NMT 0.1 | ICP-MS |
| Pesticide Residues | Complies (EU MRL, on request) | GC-MS / LC-MS/MS |
| Ethylene Oxide (ETO) | Not treated — declaration provided | LC-MS/MS (on request) |
| Synthetic Curcumin | Absent — declaration provided | By HPLC (on request) |
| Aflatoxins B1 / Total (ppb) | NMT 2 / NMT 4 | HPLC-FLD |
| Total Plate Count (cfu/g) | NMT 10,000 | USP <2021> |
| Yeast & Moulds (cfu/g) | NMT 100 | USP <2021> |
| Escherichia coli | Absent | USP <2022> |
| Salmonella sp. | Absent | USP <2022> |
| HS Code | 3301.90 | — |
| Kosher / Halal | Certified (on request) | Certification |
| Shelf Life | 24 months from date of manufacture, in original packed condition | — |
| Storage | Cool, dark place below 25°C, in tightly closed containers, protected from light | — |
*Colour and viscosity vary with grade, curcuminoid content and carrier. Two lines on this specification are commonly missing elsewhere and both matter. The first is volatile oil: it is what makes this an oleoresin rather than a colour extract, and a materially low figure indicates the aromatic fraction has been stripped. The second is residual solvent — the defining control on any solvent-extracted product. We name the solvent used and test every batch by GC; a supplier who will not name the solvent cannot be assessed against your market's limits. Note also that total curcuminoids and colour value are different measurements: the first is an HPLC assay of three defined compounds, the second is a performance measure. A material optimised for one is not automatically the best on the other, and quotations should be compared on the basis your application actually uses. Synthetic curcumin adulteration is a documented problem in this trade — screening is available and we recommend it for nutraceutical-grade purchases. A current Certificate of Analysis and MSDS are issued with every batch.
From rhizome to declared oleoresin — assayed, solvent-controlled, documented
Raw Material: Turmeric oleoresin is produced from dried Curcuma longa rhizome sourced from Indian turmeric growing regions. Curcuminoid content in the raw rhizome varies with variety and growing conditions, so incoming material is assayed before extraction rather than assumed — the yield and the achievable grade both depend on it.
Extraction & Testing: Produced at certified facilities in India. Each batch is assayed for total curcuminoids by HPLC, colour value, and volatile oil, with residual solvent tested by GC against the named solvent. Physico-chemical and contaminant testing covers moisture by Karl Fischer, heavy metals by ICP-MS, aflatoxins by HPLC-FLD, pesticide residue screening and a full microbiological panel. Synthetic curcumin screening is available on request and recommended for nutraceutical-grade purchases.
Documentation: Every shipment ships against a batch-specific Certificate of Analysis stating curcuminoids with the assay basis, colour value, volatile oil, the solvent used and its residual level, carrier and inclusion where applicable, together with an MSDS. Halal, Kosher and Organic certification are available — see our guides on EU pesticide MRL compliance and EU import requirements.
What backs every batch of Turmeric Oleoresin oleoresin
Key information for global product registration and labelling
A distinction worth getting right before labelling. Purified curcumin is a permitted food colour in the EU (E100), with its own specifications; turmeric oleoresin is a spice extract used for colour and flavour. Those are not interchangeable regulatory categories, and which one your finished product declares depends on the material you actually bought and how it is used. In the US, turmeric and turmeric oleoresin are handled under their own colour-additive listings. The practical point: the regulatory identity follows the specification, not the marketing name, so your labelling should be built on the certificate. We state clearly which material is supplied — oleoresin or purified curcumin — and the analytical basis it is sold on.
Every oleoresin is a solvent-extracted product, and residual solvent is therefore its defining quality control rather than an afterthought. Permitted solvents and their maximum residues are set by the destination market's extraction-solvent rules, and the limits differ between solvent classes. We name the solvent used on every certificate and test each batch by GC. Buyers should confirm that the solvent used is permitted for their market and application — a supplier who will not name it has made that assessment impossible. Where a customer requires a specific solvent system, that can be specified at order.
Supplied from India by SV Botanica — FSSAI Central Licence holder, Spices Board and APEDA registered exporter — from the world's principal turmeric origin. Shipped against a batch-specific Certificate of Analysis with export documentation available on request. This product is supplied as a food and nutraceutical ingredient and is not intended to diagnose, treat, cure or prevent any disease.
Guides on turmeric sourcing, curcuminoid standardisation and authenticity
How curcuminoid grades are specified, and where oleoresin sits against purified curcumin.
QualityA documented problem in this trade, and the screening that detects it.
SourcingGrowing regions, variety and curcuminoid variability in the raw rhizome.
ComparisonThe volatile fraction versus the curcuminoid fraction — and where oleoresin carries both.
RegulatoryResidue limits and screening for India-origin ingredients.
RegulatoryDocumentation, controls and border expectations for Indian botanicals.
Other turmeric products and spice oleoresins from our range
Technical and commercial questions answered by our ingredients team
Colour grades and nutraceutical grades, each declaring total curcuminoids by HPLC, colour value, volatile oil and residual solvent. Tell us which basis your application uses. Samples for qualified buyers.
Supplied as a bulk ingredient for further manufacture. Buyers are responsible for compliance with the regulations of their destination market. This product is not intended to diagnose, treat, cure or prevent any disease.
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