Reference Laboratory for Food Chemistry, Saudi Food & Drug Authority (SFDA), Riyadh, Saudi Arabia.
Department of Monitoring and Risk Assessment, Saudi Food & Drug Authority (SFDA), Riyadh, Saudi Arabia.
Food Addit Contam Part B Surveill. 2023 Sep;16(3):266-273. doi: 10.1080/19393210.2023.2217539. Epub 2023 May 31.
Titanium dioxide (TiO), an E171 manufacturer-made food additive, is extensively utilised as a colourant in drug and a food products. Some studies showed that most of confectionary and food items contain inexplicable particles. The aim of this article is to determine the size and structure of TiO nanoparticles in different food products. Ten food samples, including coffee cream, white chocolate concentrate, frosting, gum, yoghurt candy, hard candies and chewy candies, were investigated for this purpose. The crystalline structure and particle size of TiO were determined by Powder X-ray Diffraction (PXRD) and Transmission Electron Microscopy (TEM). TEM images revealed that a few of the extracted nanoparticles had a rod-like shape, but most were spherical. Also, the size of the TiO particle had a wide distribution between 12 and 450 nm. Thus, to avoid human health risk, crucial factors such as size, and shape should be considered and regulated by food authorities.
二氧化钛（TiO），一种制造商制造的食品添加剂 E171，被广泛用作药物和食品产品的着色剂。一些研究表明，大多数糖果和食品中都含有无法解释的颗粒。本文的目的是确定不同食品产品中 TiO 纳米颗粒的大小和结构。为此，研究了包括咖啡奶油、白巧克力浓缩物、糖霜、口香糖、酸奶糖、硬糖和耐嚼糖在内的十种食品样品。通过粉末 X 射线衍射（PXRD）和透射电子显微镜（TEM）确定了 TiO 的晶体结构和粒径。TEM 图像显示，提取的纳米颗粒中少数具有棒状形状，但大多数是球形。此外，TiO 颗粒的大小在 12 到 450nm 之间分布很广。因此，为了避免对人类健康的风险，食品当局应考虑并调节大小和形状等关键因素。
