Open Daily: 10am - 10pm | Alley door pickup 10am - 7pm 3038 Hennepin Ave Minneapolis, MN
612-822-4611

  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Effects of TiO₂+Ag and SiO₂+Ag nanoparticles on Escherichia coli.

Effects of TiO₂+Ag and SiO₂+Ag nanoparticles on Escherichia coli.

Bouzana, Amina
Drissi, Maroua
Chernine, Saoussene

Paperback

Biology

ISBN10: 6209334105
ISBN13: 9786209334108
Publisher: Our Knowledge Publishing
Published: Dec 21 2025
Pages: 76
Weight: 0.25
Height: 0.18 Width: 6.00 Depth: 9.00
Language: English
The proliferation of nanotechnologies, particularly in the food sector, raises concerns about their safety for human health. Due to their nanometric size, these particles cross biological barriers, from the mouth to the intestine. This work assesses the toxicological impact of two nanoparticle (NP) mixtures: TiO₂/Ag and SiO₂/Ag on Escherichia coli, a bacterium representative of the intestinal flora. A clinical strain was isolated by coproculture, identified (API 20E), then exposed to dilutions of NPs (0.125-1024 μg/ml). Petri dishes in Hecktoen medium revealed phenotypic alterations after 24 h incubation at 37 C: decreased growth, reduced colonies, morphological changes, loss of mobility and variations in grouping. At certain concentrations (2 μg/mL TiO₂/Ag, 4 μg/mL SiO₂/Ag), genomic changes were observed (Gram staining), suggesting a potential imbalance in the gut microbiota. These results highlight the need for further study by molecular analysis (DNA extraction, sequencing) to better understand NPs-induced mutations.

Also from

Bouzana, Amina

View All

Also in

Biology

View All