Botanical Source -
Chlorophyll (also chlorophyl) is a
green pigment found in almost all plants, algae, and cyanobacteria. Chlorophyll is a chlorin pigment, which is structurally similar to and produced through the same metabolic pathway as other porphyrin pigments such as heme. At the center of the chlorin ring is a magnesium ion. At the time of its discovery in the early 1900s, this was the first time that this element had been detected in living tissue.
Copper Chlorophyllin is obtained by the coppering of chlorophyll following its alkaline hydrolysis. The improved stability and brightness of Copper Chlorophyllin leads to its much wider use than chlorophyll as a food colour. There is an acid-stable type of this colouring. Chlorophyllins are used for the coloration of the most varied foodstuffs.