Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/j.chemosphere.2024.143736 |
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| Title (Primary) | Teabag-derived micro/nanoplastics (true-to-life MNPLs) as a surrogate for real-life exposure scenarios |
| Author | Banaei, G.; Abass, D.; Tavakolpournegari, A.; Martín-Pérez, J.; Gutiérrez, J.; Peng, G.; Reemtsma, T.; Marcos, R.; Hernández, A.; García-Rodríguez, A. |
| Source Titel | Chemosphere |
| Year | 2024 |
| Department | EAC |
| Volume | 368 |
| Page From | art. 143736 |
| Language | englisch |
| Topic | T9 Healthy Planet |
| Supplements | Supplement 1 |
| Keywords | Nanoplastics; Teabags; Polypropylene; Nylon; Cellulose; Intestinal cells; Cell uptake |
| Abstract | The potential health implications of environmental micro/nanoplastics (MNPLs) are increasingly concerning. Beyond environmental exposure, other sources such as food packaging, including herbal/teabags, may also be significant. This study investigates the release of MNPLs from three commercially available teabags. By simulating tea preparation, MNPL samples were extracted and characterized using a range of analytical techniques: scanning electron microscopy (SEM), transmission electron microscopy (TEM), attenuated total reflectance/Fourier transform infrared spectroscopy (ATR-FTIR), dynamic light scattering (DLS), laser Doppler velocimetry (LDV), and nanoparticle tracking analysis (NTA). The results confirmed that the teabags were made of nylon-6 (NY6), polypropylene (PP), and cellulose (CL) and that microfibers and nano-range particles (NPLs) were present in the leachates. NTA data revealed that the number of released NPLs was 1.20 × 109/mL (PP; 136.7 nm), 1.35 × 108/mL (CL; 244 nm), and 8.18 × 106/mL (NY6; 138.4). The leachate particles were then stained with iDye Poly-Pink and used to expose three human intestine-derived cell types (Caco-2, HT29, and HT29-MTX) to assess their biointeractions and the role of the mucosubstances in vitro. The results demonstrated that after 24 h of exposure to 100 μg/mL NPLs, there was significant uptake of PP-NPLs in HT29-MTX cells, as a model of cells segregating high amount of mucus. A similar uptake was observed for CL-NPLs in HT29 and HT29-MTX cells, while NY6-NPLs were internalized preferentially in Caco-2 cells. These findings underscore the importance of identifying new environmentally relevant MNPL exposure sources, for developing realistic MNPLs samples, and further investigating their potential human health effects. |
| Banaei, G., Abass, D., Tavakolpournegari, A., Martín-Pérez, J., Gutiérrez, J., Peng, G., Reemtsma, T., Marcos, R., Hernández, A., García-Rodríguez, A. (2024): Teabag-derived micro/nanoplastics (true-to-life MNPLs) as a surrogate for real-life exposure scenarios Chemosphere 368 , art. 143736 10.1016/j.chemosphere.2024.143736 |
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