Turmeric is one of the world's most traded spices — yet buyers still receive shipments that do not match their process because "turmeric" was never defined precisely enough on the purchase order. Finger or bulb? Polished or unpolished? Whole, sliced or ground? Each choice changes price, curcumin content and suitability for your application.
The anatomy of a turmeric shipment
Dried turmeric is the rhizome of Curcuma longa. In trade, material is often separated into:
- Finger turmeric — the primary rhizome, generally preferred for appearance and curcumin content
- Bulb / round — secondary rhizomes, often lower priced
- Mixed or unseparated lots — economical but less uniform
Specify which grade you require, especially for retail spice lines or standardised extract feedstock.
Polished vs. unpolished
| Grade | Appearance | Typical buyer |
|---|---|---|
| Polished finger | Smooth, bright yellow-orange | Retail spice, premium food |
| Unpolished / semi-polished | More natural, variable surface | Extraction, industrial food |
| Powder from selected grade | Depends on source rhizome | Seasonings, supplements, colour |
Curcuminoids: whole spice vs. extract
Standard dried turmeric typically contains roughly 2–5% curcuminoids, varying by cultivar, region and season. This is not the same as a 95% curcumin extract used in some supplement formulations. When your specification references curcumin, confirm:
- Whether you are buying whole / ground turmeric or a concentrated extract
- Which test method defines the percentage
- Whether colour strength (oleoresin) is the more relevant parameter for your use
Forms for different manufacturing routes
Whole and sliced rhizome suits buyers who grind in-house or produce pickles and traditional preparations. Ground turmeric must specify mesh size and whether the powder is from dry grinding or other processes. Steam-treated or sterilised grades may be required for certain export markets — document the process and retain validation records.
Origin, adulteration awareness and identity
Reputable suppliers support identity checks and provide COAs with batch traceability. Discuss adulteration controls — colourants, starch or other bulking agents in powder — and whether your QA protocol includes microscopy, chemical markers or third-party verification.
Odour, volatile oil and flavour profile
Turmeric's essential oil fraction contributes to aroma and perceived freshness. Long storage or poor packaging can flatten this profile even when colour remains acceptable. For spice blenders, a sensory reference sample is as valuable as a numeric COA.
Quotations that reflect the right grade
When requesting turmeric from NATRIGANIC, include form (whole / sliced / powder), polish level, intended application and destination market. We will respond with grades that match your programme — not a generic commodity quote that leaves room for misunderstanding.
View turmeric rhizome in our catalogue or submit an enquiry with your specifications.