Lac Dye

Lac Dye is a natural food color extracted from the female insect Laccifer locca which is attach to legume and mulberry plants, by the process of extracting with weak sodium carbonate solution and refining. The main composition is laccaic acid A and laccaic acid BCDE etc.. ·Characteristics The appearance of normal lac dye is bright red powder, can dissolve in ethanol and propanediol, slightly dissolve in water, not in cottonseed oil. The appearance of water soluble lac dye is brown powder, and can completely dissolve in purified water. The shade of color solution is different when PH changes, its reddish orange when PH is between 35,red to purplish red color when PH is between 57, its purplish red when PH is more than 7.It has excellent resistance to light and heat in acid medium, but not in alkali medium. It can be influenced by metal ions, especially ferric ion. Before using water soluble lac dye, appropriate quantity of purified water must be used for dissolving lac dye before adding into food or beverage. ·Quality Standard ItemsEnterprise StandardNormal ProductWater solubleAppearance Bright Red PowderBrown PowderColor Value E1%1cm490nm 13016070160Loss on Drying % Less than 1010Ash % Less than 0.813PH 34Leadas Pb mg/kg Less than 55Arsenicas As mg/kg Less than 22Pathogenic Bacteria NegativeNegative