The CDIATM Erythrosin Colloidal Gold Test Cassette (Soft Drinks) is a lateral flow immunoassay for the detection of erythrosin in soft drinks.
Erythrosin antigen is coated on the test region of the nitrocellulose membrane of the strips, and erythrosin antibody is labeled with colloid gold. During a test, the colloid gold labeled antibody coated in the strip move forward along the membrane, and a red line will show up when the antibody gathers with the antigen in the test line; if erythrosin in the sample is over the detection limit, line T is blank; on the other wise, if erythrosin in the sample is less than the detection limit, line T is red.
Erythrosine, also known as Red No. 3, is an organoiodine compound, specifically a derivative of fluorone. It is cherry-pink synthetic, primarily used for food coloring. It can be used as food coloring, printing ink, biological stain, dental plaque disclosing agent, radiopaque medium and sensitizer for orthochromatic photographic films. In 1990 the U.S. FDA had instituted a partial ban on erythrosine. In June 2008, the Center for Science in the Public Interest (CSPI) petitioned the FDA for a complete ban on erythrosine in the United States. The CDIATM Erythrosin Colloidal Gold Test Cassette (Soft Drinks) is a lateral flow immunoassay for the detection of erythrosin in soft drinks.