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药用色素分两大类;即天然色素和合成色素,天然色素一般较为安全,分植物色素(甜菜红,胡萝卜素,辣椒素等)、动物色素(虫胶色素,胭脂虫素等).合成色素由于经过复杂的工艺过程,混入有害物质机会较多,制成的色素也可能有一定毒性.但由于合成色素成本低,色泽鲜艳,着色力强,色调多样,故仍被广泛使用.随着每理学的发展,发现某些色素有慢性毒性和致癌性.因此,应有较为严格的规
Medicinal pigments are divided into two major categories; natural pigments and synthetic pigments. Natural pigments are generally safe. They are divided into plant pigments (beet red, carotene, capsaicin, etc.), animal pigments (shellacin, cocophora, etc.). Due to the complicated process, pigments have more chances of mixing harmful substances, and the resulting pigments may also have certain toxicity. However, synthetic pigments are still widely used due to their low cost, bright color, strong coloring power, and various hue. The development of each science found that some pigments have chronic toxicity and carcinogenicity. Therefore, there should be stricter regulations.