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nature : food is food coloring and improve the color of the material. Often include synthetic foods and consuming natural pigment two categories. The former refers to artificial chemical synthesis system for the organic pigment, according to chemical structure can be divided into Azo (with amaranth red, lemon yellow, etc.) and non-azo (erythritol is bright red and blue), two; From the latter of natural, mostly edible resources, the use of certain processing methods available the organic coloring agents. The latter is a plant-derived, including animals and microorganisms from the pigment, the pigment content and stability as the former general. It was their sense of security higher than synthetic pigment. In addition, there will be artificial chemical synthesis, the chemical nature and structure of the pigment found exactly the same as organic pigment beta-carotene under the third category pigment, that is equivalent to the natural pigment (nature-identical colors). Permission consumption pigment also Carmine, the temptation red, sunset yellow, indigo and their respective aluminum color amylin, and sodium copper chlorophyll, titanium dioxide, beet red, caramel, yellow chrysanthemum extract, curcumin, red pepper, red clothing peanuts, sorghum, red, green-tea, tea yellow pigment, such as carbon black plant.
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