A chemical used to whiten food. Food ingredients inherently have their own inherent color, but if only the edible parts are refined, the more refined they are, the whiter the color will generally be. For example, flour is made by milling only the endosperm of wheat, but if the degree of refinement is low, the bran gets mixed in and the food becomes discolored. For this reason, consumers often consider the whiter the color, the higher the quality, which is why bleaching agents are added. There are two types of bleaching agents: oxidizing type, which bleaches by oxidizing pigments, and reducing type, which bleaches by reducing pigments. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
食品の色を白くするために用いる薬剤。食品原料は本来,固有の色をもっているが,可食部のみを精製すると,精製度がよいものは一般に色が白くなる。例えば,小麦粉は小麦の胚乳部のみを製粉するが,精製度が悪いとふすまが混入し,着色を示す。そのため,消費者は色が白いものほど高級なものと認めることが多く,漂白剤が添加される素地となっている。漂白剤には,色素を酸化して漂白する酸化型のものと,還元して漂白する還元型のものがある。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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