If you’ve been watching the functional ingredients space, you’ve noticed a quiet shift: buyers want cleaner labels, higher assays, better dispersion—and fast documentation. That’s why I’ve been spending more time with pure turmeric extract projects than ever. The product goes by many names—Turmeric extract & Curcumin, 95% curcuminoids, water-dispersible curcumin—and, to be honest, the best batches balance potency with predictable performance in the factory.
Origin matters too. Hongri’s facility in No. 268 Xianghe Street, Economic Development Zone of Xingtai city, Hebei 054001 China has been shipping on-spec lots consistently—at least according to the buyers I ping for back-channel feedback.
Here’s how a solid pure turmeric extract offering usually looks in real-world QA.
| Parameter | Typical value (≈) | Method/Standard |
|---|---|---|
| Curcuminoids (HPLC) | 95% ±2% | HPLC per AOAC guidance |
| Moisture | ≤5% | Loss on drying |
| Heavy metals | Pb <0.5 ppm; As <0.5 ppm | USP <232>/<233> (ICP-MS) |
| Residual solvents | Meets limits | USP <467> |
| Microbial limits | Complies | USP <2021>/<2022> |
| Mesh size | 60–100 mesh (customizable) | In-house sieve test |
| Shelf life | 24–36 months | Cool, dry, light-protected |
Materials: Curcuma longa rhizomes, ethanol/water, food-grade carriers (optional).
Methods: Milling → solvent extraction → concentration → crystallization → drying (spray or tray) → milling/sieving → blending → packaging.
Testing: HPLC assay; ICP-MS for metals; solvents per USP; micro per USP; color checks; stability pulls at 25°C/60% RH and 40°C/75% RH.
Service life: Around 2–3 years; real-world use may vary with packaging and light exposure.
Mini case notes: A beverage client switched to a 10% dispersible grade—ringing vanished, customer reviews improved. A K-beauty formulator reported fewer color shifts after moving to tighter peroxide-value excipients. A spice brand dialed in 80-mesh for dust control.
| Vendor | Assay range | Certs | Traceability | Lead time |
|---|---|---|---|---|
| Hongri Spice (Hebei, CN) | 50%–95%+ | ISO 22000, HACCP, Halal/Kosher | Farm → batch COA | 7–15 days |
| General Trader A | 90%–95% | Basic GMP claim | Limited | 15–30 days |
| Small Workshop B | Varies | Few/none | N/A | Uncertain |
Options: carrier-free or maltodextrin; mesh 60–120; dispersible grade; color targets; piperine co-blend (check local regs).
Recent COA snapshot (example): Curcuminoids 95.3% (HPLC); Pb 0.2 ppm; As 0.1 ppm; residual solvents: pass; TAMC <10^3 cfu/g; yeast/mold <10^2 cfu/g. It seems routine now, but five years ago this level of transparency was rare.
Bottom line: for pure turmeric extract, I’d prioritize assay verification (HPLC), solvent compliance, stability in your matrix, and a vendor who sends data before you ask. Simple, but surprisingly uncommon.