India makes most of the world’s curcumin extract, and many of the websites calling themselves turmeric extract manufacturers are traders. That is not a problem in itself. We are a merchant exporter, not a manufacturer, and we say so. The problem is not knowing which one you are dealing with, and not checking the material either way. This is the checklist we would use if we were in your seat.
Start With the Licence, Not the Website
Every food business operator handling curcumin extract for food or supplement use in India needs an FSSAI licence. A manufacturer holds one for the plant’s address, with manufacturing among its kinds of business. A trader or exporter holds one for trading or export. Ask for the licence number and check it yourself on the FSSAI FoSCoS portal. The name, address and kind of business on the portal should match the company invoicing you and, for a manufacturer, the site the material is made at. A licence held only for trading at a city office address tells you that you are talking to a trader, whatever the website says.
Do the same with every certificate offered (GMP, ISO 22000, FSSC 22000, HACCP, organic). Read the scope and the site address, not just the logo. A certificate for a different site or a different activity does not cover your material.
Ask How Curcuminoids Are Measured
“Curcumin 95%” means total curcuminoids (curcumin, demethoxycurcumin and bisdemethoxycurcumin) at 95%, and the method matters as much as the number. A UV-spectrophotometric figure measures everything that absorbs near 425 nm, including any synthetic colourant that does. An HPLC figure separates the three curcuminoids and reports each one. Ask for HPLC with the three peaks shown, and ask what ratio the plant normally produces. Our HPLC vs UV explainer for curcumin 95 and curcuminoids assay guide go through the gap between the two numbers.
Screen for the Known Adulterants
- Synthetic curcumin. It is cheaper than extracting curcumin from rhizome and it passes a UV assay. A curcuminoid profile with almost no demethoxy- and bisdemethoxycurcumin is the first warning. Carbon-isotope testing settles the question where it matters. See synthetic curcumin in turmeric extract.
- Lead chromate. This industrial pigment has been added to turmeric to brighten its colour. Forsyth and colleagues (Environmental Research, 2019) traced lead exposure in Bangladesh to lead chromate added to turmeric at polishing mills. Ask for lead on every certificate, tested by ICP-MS or AAS, and treat a high lead result as a reason to reject, not to negotiate.
- Industrial dyes (Sudan dyes, metanil yellow) are screened on the same logic for the powder and oleoresin end of the range.
Residues: Ethylene Oxide and Solvents
Two residue questions decide whether a lot clears customs in the EU and in other strict markets.
- Ethylene oxide. Ask whether the material or any carrier has ever been fumigated with ETO. Ask for 2-chloroethanol and ETO results by GC-MS from an independent laboratory. EU border controls on Indian-origin botanical supplements now centre on this hazard.
- Residual solvents. Curcumin is usually extracted with acetone, ethyl acetate or ethanol. Ask for the solvent to be named on the certificate and its residue declared. See permitted extraction solvents for how the solvent choice interacts with organic claims.
What a Real Plant Can Show You
- A batch record that ties your lot number to an extraction date, the rhizome lot and the solvent used.
- In-house HPLC with chromatograms, and an independent laboratory’s results for the same lot on request.
- Solvent recovery: where the solvent goes after extraction, and how residue is driven down.
- Retained samples for each batch, kept beyond the product’s shelf life.
- A site visit or a video audit of the line, scheduled on your dates, not theirs.
A trading desk cannot show you items 1 to 5 from its own premises. It should be able to get them from the plant, and a good one will.
Direct From a Manufacturer, or Through an Exporter?
Buy direct when you take full-container volumes of a single grade, can audit the plant yourself and have the import team to handle Indian export paperwork. You get the shortest chain and the lowest unit price.
An exporter makes sense when you need several ingredients from different plants on one shipment and one set of documents. It also makes sense when your lots are below a plant’s minimum, or when you want one counterparty who answers for testing and paperwork across all of it. The cost is a margin. The test is whether the exporter gives you the plant’s batch-level evidence and independent results, or only its own letterhead.
Our turmeric extract, curcumin 95% by HPLC is sourced on those terms. For the wider buying checklist see the turmeric extract buyer’s guide and the sourcing guide.
Curcumin 95% by HPLC, with the batch evidence
Tell us the grade, the quantity and the destination market. We send the specification, a reference certificate and the testing panel for your market.