Variations in Cadmium and Lead Bioaccessibility in Wheat Cultivars and Their Correlations with Nutrient Components

Abstract

To reduce the health risks of exposure to Cd and Pb in wheat, a field experiment was conducted to investigate the differences in Cd and Pb bioaccessibility among the grains of 11 wheat cultivars and their relationships with the nutrient compositions of grains. The grain concentrations (Cd: 0.14–0.56 mg kg–1, Pb: 0.08–0.39 mg kg–1) and bioaccessibility (5.28–57.43% and 0.72–7.72% for Cd and Pb in the intestinal phase, respectively) of Cd and Pb differed significantly among the 11 cultivars. A safe wheat cultivar (Shannong16) with a relatively low health risk and the lowest grain Cd and Pb concentrations was selected. Ca, Mg, phytate, and methionine played key roles in affecting Cd and Pb bioaccessibility in wheat, with Ca and phytate significantly negatively correlated with Cd and Pb bioaccessibility. These findings can be used to optimize the selection strategy for safe wheat cultivars for healthy grain production in Cd-polluted farmland.

Ecotoxicity of Cadmium along the Soil-Cotton Plant-Cotton Bollworm System: Biotransfer, Trophic Accumulation, Plant Growth, Induction of Insect Detoxification Enzymes, and Immunocompetence

“…An unchanged larval growth, larval duration, pupal duration, and adult emergence is usually realized at the cost of decreased pupal weights, pupal size, and fecundity. A reason why we observed a significant reduction in the measured life history components can be attributed to high foliar Cd concentration and Cd-induced nutrient quality reduction due to high TCs, as documented in wheat cultivars subjected to Pb and Cd exposure …”

Distribution of Elements in Durum Wheat Seed and Milling Products: Discrimination between Cultivation Methods through Multivariate Data Analysis

“…The cultivation method affects the final products, but high-quality pasta has been obtained from organic wheat in Southern Italy using selected varieties of wheat [ 3 ]. Foods derived from wheat contribute to meeting the body’s need for essential elements [ 4 ]; however, when polluted [ 5 , 6 ], they can significantly contribute to overexposure to some elements. Wheat plants exploit elements [ 7 ] present in the soil for their biological needs, but the concentration of these elements and their solubility change in different soils, making their uptake by the plants more or less likely [ 8 ].…”