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Food sensory quality of the food color is an important factor. It is often used in the production of food in a food additive - food coloring. Use of a natural food coloring food coloring food coloring and synthetic two categories. In 1850 the British invented the first synthetic aniline purple food coloring until it is colored with natural pigments to. As early as the 10th century, the ancients started to use natural pigments to the food coloring plant, the first use of pigment is Great Britain's Allie Urza people, when they rose by purple madder plant pigments made of candy. After the American people and Armand Leo Symantec Turk tribe have been extracted from the female cochineal Cochineal Red, used in food coloring. China since ancient times, the red rice wine, Sauce, made sausage and other habits. With natural and synthetic distinction. Use of natural pigment is extracted directly from the pigment plant and animal tissues, it is generally harmless to humans, such as red yeast rice, called chlorophyll, curcumin, beta carotene, amaranth, and sugar, color, etc., is part of it. Synthetic food coloring, is separated from the coal tar as the raw material made of aniline dyes, pigments or aniline is also known as coal tar pigments, such as the synthesis of Amaranth, carmine and tartrazine and so on. These synthetic colors easily induced by poisoning, diarrhea and even cancer, harmful, it is no more possible to use or not.性爱能消除青春痘吗
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