5. Biological Source: The isolation of a “yellow coloring-matter”
from the rhizomes of Curcuma longa (turmeric) and named as
Curcumin, which is a member of the ginger family
(Zingiberaceae).
Mr. Sagar Kishor Savale
10. Chemical Name (1E,6E)-1,7-Bis(4-hydroxy-3-methoxyphenyl)-1,6 heptadiene-3,5-dione
Synonyms Polyphenols
Molecular Formula C21 H20 O6
Molecular Weight 368.39 g/mol
Density 1.28 g/cm3
Log P/ hydrophobicity 1.82
pKa 8.3±0.04
Refractive Index n20
D 1.42
Solubility Slightly Soluble in Water, Soluble in Ethanol and Methanol (10 mg/ml), DMSO (25 mg/ml), acetic acid,
0.1M NaOH, acetone, water (< 0.1 mg/ml).
BCS Class Class II
λmax Methanol: 430 nm
Appearance Bright yellow-orange powder
Physical State Solid Powder
Melting point 175°C
Identification Melting point, infrared absorption spectrophotometry (IR), Differential scanning Calorimetry (DSC)
Mr. Sagar Kishor Savale
11. Dose and dosing frequency: Up to 12 gm per day.
Bioavailability: The mean oral bioavailability of curcumin is 2% due mainly to hepatic first
pass metabolism.
Plasma Protein binding: 90 %
Plasma half-life: 11 hrs.
Mr. Sagar Kishor Savale