| Texto completo | |
| Autor(es): |
de Oliveira, Aline Pereira
;
Naozuka, Juliana
;
Figueroa, Julio Alberto Landero
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF HAZARDOUS MATERIALS; v. 451, p. 12-pg., 2023-03-07. |
| Resumo | |
Mushrooms may incorporate significant levels of Hg making its consumption harmful to human health. Mercury remediation induced by Se competition in edible mushrooms represents a valuable alternative since Se plays effective roles against Hg uptake, accumulation, and toxicity. In this way, Pleurotus ostreatus and Pleurotus djamor were cultivated on Hg-contaminated substrate simultaneously supplemented with Se(IV) or Se(VI) under different dosages in this study. The protective role of Se was assessed taking into account morphological char-acteristics and Hg and Se total concentrations determined by ICP-MS, as well as proteins and protein-bound Hg and Se distribution by SEC-UV-ICP-MS, and Hg speciation studies (Hg(II) and MeHg) by HPLC-ICP-MS. Both Se (IV) and Se(VI) supplementation were able to recover the morphology mainly of Hg-contaminated Pleurotus ostreatus. The mitigation effects induced by Se(IV) stood out more than Se(VI) in terms of Hg incorporation, decreasing the total Hg concentration up to 96 %. Also, it was found that supplementation mainly with Se(IV) reduced the fraction of Hg bound to medium molecular weight compounds (17-44 kDa) up to 80 %. Finally, it was shown a Se-induced inhibitory effect on Hg methylation, decreasing MeHg species content in mushrooms exposed to Se(IV) (51.2 mu g g-1) up to 100 %. (AU) | |
| Processo FAPESP: | 19/00663-6 - O papel da especiação de selênio no antagonismo de selênio e metais tóxicos em cogumelos enriquecidos com selênio |
| Beneficiário: | Aline Pereira de Oliveira |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |
| Processo FAPESP: | 17/05009-7 - Avaliação do antagonismo entre selênio e elementos tóxicos em cogumelos: enriquecimento e remediação |
| Beneficiário: | Aline Pereira de Oliveira |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 18/06332-9 - Enriquecimento elementar: essencialidade e toxicidade |
| Beneficiário: | Juliana Naozuka |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |