Wormwood pigment: Wormwood pigment is a pigment component in the original gum secreted by the purple gummy worm on its parasitic plants. Cordyceps pigment is divided into two categories: water-soluble and water-insoluble. The water-soluble one is wormwood red acid. It is stable to light and heat when acidic. The color tone varies with the degree of acid reduction.
Saffron yellow pigment: a yellow pigment in saffron pigment. Soluble in water and ethanol, insoluble in oil.
Copper chlorophyllin sodium salt: blue-black powder with golden luster, amine-like flavor, soluble in water, aqueous solution is blue-green, light resistance is stronger than chlorophyll.
Red currant rice: is one of the traditional use of natural red pigment. Production method is to inoculate the purple red mold inoculation on the rice culture and become. Mainly for the manufacture of barbecued pork, red enema, red fermented bean curd and some preparation of wine coloring.
Sauce color: that is, caramel, is one of China's traditional use of natural coloring, for the brown or dark brown liquid. Liquid caramel is the sucrose or maltose syrup in 160 ~ 180 ℃ high temperature heating for 3 hours, so that the caramelization, and then neutralized with alkali production, in order to make the reaction accelerate, sometimes add ammonium salt as a catalyst.
Caramel itself is non-toxic, but the caramel produced with ammonium salt contains a nitrogen-containing heterocyclic compound 4-methylimidazole, which has a convulsive effect, and if the content is higher, it is harmful to people.
Carotene: a normal component of human food, is one of the nutrients people need, can be used as cream coloring agent.
Capsaicin and beet red: red pigment from chili peppers and beet respectively. The former is a carotenoid, but carrot A original. It is non-toxic to humans and is used in canned foods.