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    E171 tagged posts

    Titanium Dioxide: E171 first enters the Blood via the Mouth

    May 24, 2023, Categories  Biology/Biotechnology, Health/Medical

    Titanium dioxide: E171 first enters the blood via the mouth
    Correlative secondary electron (SE) imaging, scanning transmission ion microscopy (STIM) and secondary ion mass spectrometric (SIMS) elemental mapping of ultrathin sections of buccal TR146 cells exposed to food-grade TiO2 (E171) particles for 24 hours. In contrast to the TEM images presented in figure 2, SE imaging obtained with a helium ion microscope (here, npSCOPE) reveals predominantly topographical information. The thin sections therefore show only limited contrast of the cell structures and the nanoparticles are easily recognized. For TEM-like imaging, the STIM detector attached to the npSCOPE prototype device allows investigation of the transmitted beam information and highlights the NP in relation to the cellular ultrastructure...
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    Common Food Additive Found to Affect Gut Microbiota

    May 14, 2019, Categories  Biology/Biotechnology, Chemistry/Nanotechnology, Health/Medical


    Impact of the food additive titanium dioxide (E171) on gut microbiota-host interaction. Frontiers in Nutrition, 2019

    Titanium dioxide nanoparticles E171 may impact human health. University of Sydney research provides new evidence that nanoparticles, which are present in many food items, may have a substantial and harmful influence on human health. E171 is commonly used in high quantities in foods and some medicines as a whitening agent. Found in more than 900 food products such as chewing gum and mayonnaise, E171 is consumed in high proportion everyday by the general population.

    Published in Frontiers in Nutrition, the mice study found that consumption of food containing E171 has an impact on the gut microbiota (defined by the trillions of bacteria that inhabit the gut) which coul...

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