Avaliação do risco toxicológico do consumo do amendoim (Arachis hypogaea L.) cultivado em solos contaminados por crómio e dos mecanismos de tolerância ao stress

Abstract

The present study aimed to evaluate the toxicological risk of peanuts grown in Cr-contaminated soils. It consisted of setting up an experimental trial in a greenhouse with two Cr levels (10 and 30 mg.kg-1), a control, and four replicates. The Cr concentration in plants and soil was determined using inductively coupled plasma atomic emission spectrophotometry (ICP-OES). The results show that the Cr concentration in peanut plants was below the FAO/WHO maximum permissible limit (MPL) (2.3 mg.kg-1). However, in the 30 mg.kg-1 Cr treatment, Cr levels in the plants were above the European Community/Codex maximum permissible limit (0.3 mg.kg-1). The bioaccumulation and translocation factors were greater than one (FBA and FT˃1) in both treatments. The estimated daily intake (EID) values were above the tolerable upper limit (Cr = 0.2 mg.kg -1 ), indicating a potential non-carcinogenic risk that is more pronounced in children. The estimates of the risk quotient (RQ) and lifetime incremental carcinogenic risk (LVCR) for adults and children were below the safety limit (RQ˂1; LVCR <10 -4 ), except for the 30 mg.kg -1 treatment, where the RQ in children was 1.077, and the LVCR in adults was 2.03 ⨯ 10 -4 . Therefore, these results suggest the existence of non-carcinogenic risks in children and carcinogenic risks in adults who consume peanuts grown in soils with these contamination patterns.(TRADUÇÃO NOSSA)