Carminic acid (C22H20O13) is a red glucosidal hydroxyanthrapurin that occurs naturally in some scale insects, such as the cochineal and the Polish cochineal. The insects produce the acid as a feeding deterrent. Carminic acid is the colouring agent in carmine. Synonyms are C.I. 75470 and C.I. Natural Red 4.
US Patent Issued to CHR-Hansen on Sept. 20 for "Method for the Preparation of a Carminic Acid Lake" (Danish Inventors)
Sep 23, 2011; ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 8,021,440, issued on Sept. 20, was assigned to CHR-Hansen A/S (Horsholm,...