Curcumin
| Nome del prodotto | Curcumin |
|---|---|
| Altri nomi | Turmeric Yellow, Diferuloylmethane, Natural Yellow 3, C.I. 75300 |
| Numero CAS | 458-37-7 |
| Botanical Source | Curcuma longa L. (turmeric rhizome) |
| Formula molecolare | C21H20O6 |
| Peso molecolare | 368.38 g/mol |
| Aspetto | Orange-yellow crystalline powder |
| Analisi (HPLC) | ≥95%, ≥98% (curcuminoids basis) |
| Solubilità | Practically insoluble in water; soluble in ethanol, acetone, DMSO |
| Confezione | 25 kg fiber drum with double PE liner |
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Synonyms: Curcumin, Diferuloylmethane, Turmeric Yellow, Natural Yellow 3, C.I. 75300, (E,E)-1,7-Bis(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-dione
Curcumin is the principal curcuminoid of turmeric, the golden-yellow rhizome of Curcuma longa L. that has anchored South Asian cooking and Ayurvedic medicine for well over two thousand years. In the traditional system it was applied as an anti-inflammatory and wound-healing agent; today the same molecule sits at the center of a global market spanning dietary supplements, functional beverages, and pharmaceutical research. What changed is not the chemistry but the demand for a defined, reproducible grade of the compound rather than a crude spice powder.
Chemically, curcumin is a symmetrical diferuloylmethane — two ferulic acid units joined by a seven-carbon chain that carries both the conjugated dienone system and the two phenolic rings responsible for most of its reported bioactivity. It rarely exists alone in nature: turmeric oleoresin typically contains curcumin alongside demethoxycurcumin and bisdemethoxycurcumin, and commercial material is usually expressed as total curcuminoids. Standardized curcumin at 95% or 98% is therefore a purification product, not a simple extract, and the ratio between the three curcuminoids is a useful quality marker for buyers who need batch-to-batch consistency.
The molecule’s weak points are well known to formulators. It is practically insoluble in water, degrades quickly under alkaline conditions, and shows poor oral bioavailability unless paired with piperine, phospholipids, or a delivery system such as micelles or nanoparticles. Light and oxygen sensitivity also mean that storage and packaging choices matter as much as the assay value on the COA. For these reasons, most industrial buyers specify curcumin by HPLC purity, curcuminoid profile, and heavy-metal limits rather than by botanical origin alone.
| Parametro | Specifiche |
|---|---|
| Analisi (HPLC) | ≥95.0% total curcuminoids |
| Identificazione | IR spectrum conforms to reference standard |
| Perdita per essiccazione | ≤2.0% |
| Residuo di combustione | ≤0.5% |
| Metalli pesanti | ≤10 ppm (Pb ≤2 ppm, As ≤2 ppm) |
| Limiti microbiologici | Total plate count ≤1000 cfu/g; yeast and mold ≤100 cfu/g |
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