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Human exposure assessment to potentially toxic elements (PTEs) from tofu consumption

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Colecciones
  • DOBST. Obstetricia y Ginecología, Pediatría, Med. Preventiva y Salud Pública, Toxico., Medi. Legal y Forense, Parasitología
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Autor
Paz Montelongo, Soraya Autoridad ULL; Rubio Armendáriz, María del Carmen; Gutiérrez Fernández, Ángel J.; González Weller, Dailos; Hardisson de la Torre, ArturoAutoridad ULL
Fecha
2021
URI
http://riull.ull.es/xmlui/handle/915/40843
Resumen
Potentially toxic elements (PTEs) (V, B, Ba, Li, Sr, Cr, Ni, Al, Pb, Cd) were determined in 130 samples of different tofu types (natural, flavored, smoked, and fresh made) by ICP-OES (inductively coupled plasma optical emission spectrometry). Al was the most notable element found with the highest concentration (6.71 mg/kg ww) found in flavored tofu. Ni level (0.38 mg/kg) stands out in smoked tofu. European tofu has higher PTE levels than Chinese tofu. Organic-produced tofu has higher PTE concentrations than conventional produced tofu. A total of 200 g/day of smoked tofu confers a contribution percentage of 39.6% of its TDI (tolerable daily intake). In addition, 200 g/day of flavored tofu would mean a high Pb contribution with a 23.2% of the BMDL (benchmark dose level) set in 0.63 μg/kg bw/day to the development of nephrotoxicity. Mean consumption would not pose a risk to adults’ health. Considering the obtained results, it would be advisable to establish limits for certain metals such as Pb, Al, and Ni in this type of product. Furthermore, it is recommendable to set consumer guidelines to some tofu types in order to avoid excessive intake of PTEs.
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Universidad de La Laguna

Universidad de La Laguna

Pabellón de Gobierno, C/ Padre Herrera s/n. | 38200 | Apartado Postal: 456 | San Cristóbal de La Laguna, Santa Cruz de Tenerife - España | Teléfono: (+34) 922 31 90 00