Curcumin is a yellow pigment obtained from the rhizomes of turmeric. Its principal component is curcumins. It is soluble in ethanol but insoluble in water. It exhibits a yellow shade at acidic and neutral pH and a reddish-brown at alkaline pH. Stable to heat but sensitive to light.
Quality Control
With heavy metal, solvents residue, pesticide residue microorganism meet USP/EP/CP standards.
Yellow to Red crystalline powder, soluble in ethanol and glacial acetic acid,but insoluble in water and diethyl ether
It exhibits a yellow shade at acidic and neutral pH and a reddish-brown at alkaline pH, PH 7.8(yellow)~9.2(red brown)
Good stable to reducing agent, good staining(especially for protein)
Stable to heat but sensitive to light and iron ion
Application:
A food additive used for coloring food, beverage, alcoholic drinks, pastry, jelly, and snacks.