ABSTRACT

Titanium dioxide (TiO₂) is commonly used in foods with code E171. There is information on the food packaging that it contains E171 in the ingredients section. However, there is no information on the amount of E171 used as ingredient. Therefore, determination of TiO₂ content of foods is extremely important for human health. In this study, confectionary foods, chewing gums, chocolates and white colored foods were investigated. TiO₂ levels of investigated foods were determined by inductively coupled plasma optical emission spectrometry (ICP-OES). The average titanium dioxide concentrations were found ranging from 3 to 2400 mg kg^-1. The size of TiO₂ particles in the foods samples was determined with transmission electron microscopy (TEM). Titanium dioxide nanoparticles in the studied foods were found to vary in size from 30 to 410 nm.

摘要

二氧化钛（TiO ₂）通常用于代码E171的食品中。在食品包装上的成分部分包含有关E171的信息。但是，没有有关用作成分的E171数量的信息。因此，确定 食品中TiO _2的含量对人体健康极为重要。在这项研究中，对糖果食品，口香糖，巧克力和白色食品进行了调查。 通过电感耦合等离子体发射光谱法（ICP-OES）确定被调查食物中TiO _2的含量。发现二氧化钛的平均浓度为3至2400 mg kg ^-1。TiO ₂的大小 用透射电子显微镜（TEM）测定食品样品中的颗粒。研究食物中的二氧化钛纳米粒子的大小介于30至410 nm之间。