Toxic and essential elements in conventional and home-produced eggs by ICP-MS analysis

Abstract

Concentrations of As, Ba, Cd, Co, Mn, Pb, Se, Sr, V, Cu, Fe, Mg, Zn and Mo were determined in conventional and home-produced eggs as sold in Brazil. Thirty-four conventional and 21 home-produced samples were obtained in different Brazilian cities. Elements were determined by inductively coupled plasma mass spectrometry (ICP-MS). Concentrations of Ba, Cd, Co, Pb, Se, Fe, Zn and Mo in conventional and home-produced eggs differed (statistically significant). Correlations were found among the other elements in both production systems. The estimated daily intake for toxic elements based on Brazilian egg consumption did not exceed the toxicological reference values. The results clearly demonstrated that eggs are an important source of essential elements such as Mo, Fe, Se and Zn.

The Use of Decision Trees and Naïve Bayes Algorithms and Trace Element Patterns for Controlling the Authenticity of Free‐Range‐Pastured Hens’ Eggs

“…Taking into account the differences in the production system between free‐range and battery eggs, a differentiated pattern in mineral concentration has previously been demonstrated (Overmeire and others ; Giannenas and others ; Batista and others ; Freitas and others ). Thus, if a chemical element composition database is defined, data mining tools, such as decision trees and naïve Bayes (NB) algorithms, can be used to identify the group to which a new sample belongs after a preliminary group classification (Mutihac and Mutihac ).…”

Evaluation of macro- and microelement levels for verifying the authenticity of organic eggs by using chemometric techniques

“…Contrary to a previous report from Vincevica-Gaile et al, 30 who found a wide range of concentrations in hen eggs grown in Latvian organic farms, Brazilian organic and regular eggs presented elemental compositions within narrow concentration ranges. In a previous study from our research group, de Freitas et al 31 determined trace element concentrations in commercial and free-range whole chicken eggs sold in different Brazilian regions. A wider range of concentrations for ordinary and free-range eggs than in the present study was found.…”

“…de Freitas et al 31 reported As levels in Brazilian egg samples ranging from 23 AE 2 to 21.5 AE 8.5 ng g À1 (AE is the standard deviation, SD) for ordinary and free-range egg samples, respectively. According to the Codex Alimentarius Commission 32 the acceptable limit for this toxic element in eggs and their derivatives is 500 ng g À1 .…”

Occurrence and dietary exposure of heavy metals in marketed vegetables and fruits of Shandong Province, China

“…Compared with the above methods, ICP‐MS has the superiority of wide linear range, high sensitivity, high throughput, and strong antimatrix interference ability (Jiang, Huang, et al., 2020 ; Yin et al., 2020 ). It has been used in the applications of multicomponent metal elements in red wine, grain, meat, and eggs (de Freitas et al., 2013 ; Persson et al., 2009 ; Song et al., 2020 ; Vacchina et al., 2020 ). Therefore, ICP‐MS provides an ideal tool for the simultaneous detection of multicomponent heavy metals in food.…”