Lac dye
Lac dye is a deep red colorant extracted from the crude shellac resin excreted by the lac insect. It is water-soluble and very easy to use.
Lac dye is a natural color pigment and not considered toxic. Therefore it is widely used as food color additive in Asia, especially Japan, Korea, and China.
|
PROPERTIES |
UNITS |
Specifications |
|
Colour value |
- |
1330 ~ 1610 |
|
Property |
- |
Red to dark red powder or granules having a slight characteristic odor. |
|
Identification (1)Color identification |
- |
A purplish red color develops. |
|
(2)Wavelength of maximum absorption |
nm |
485 ~ 495nm |
|
(3)Paper chromatography |
- |
A yellowish red to red spot is observed at an Rf value of about 0.4 |
|
Lead (as Pb) |
µ g/g |
Not more than 5 |
|
Arsenic (as AS) |
µ g/g |
Not more than 3 |
|
Loss on drying |
% | Not more than 10.0 |
|
Ash |
% | Not more than 1.0 |
|
Total viable aerobic count |
cfu/g | Not more than 300 |
|
Coliform group |
- | Negative |
|
Escherichia coli |
- | Negative |
|
Heat-resistant bacterium number |
cfu/g | Not more than 10 |
|
Salmonella bacterium |
- | Negative |
|
Bacillus cereus |
- | Negative |
|
Staphylococcus aureus |
- | Negative |
|
Clostridium genus |
- | Negative |
|
Fungus |
- | Negative |
|
Yeast |
- | Negative |
