Health Risk Assessment and Accumulation of Potentially Toxic Elements in Capsella bursa-pastoris (L.) Medik
2025
Ivana Mikavica | Dragana Ranđelović | Miloš Ilić | Marija Simić | Jelena Petrović | Marija Koprivica | Jelena Mutić
Capsella bursa-pastoris (L.) Medik (C. bursa-pastoris) is an underexplored medicinal herb and bioindicator of potentially toxic elements (PTEs). Its broad traditional utilization combined with its high capacity for PTE accumulation may endanger human health. Herein, we investigated the concentrations and mobility of PTEs (Ba, Co, Cr, Cu, Fe, Mn, Ni, Sr, and Zn) in the urban soil&ndash:C. bursa-pastoris system and comprehensively assessed potential health risks associated with exposure to contaminated soils, plant and herbal extracts. Cu, Zn, Sr, and Mn were the most abundant in soils and predominantly phytoavailable. The calculated values of the geo-accumulation index (Igeo) indicated moderate to heavy Cu, Zn, and Sr contamination in the soil. C. bursa-pastoris demonstrated two strategies for PTEs&mdash:the exclusion of Ba, Cr, Mn, and Sr, and the accumulation of Cu, Ni, Co, and Fe. Principal Component Analysis (PCA) classified samples from four cities based on the PTE levels in soils, plants, and herbal extracts. Although plant tissues contained elevated levels of PTEs, the estimated daily intake (EDI), target hazard quotient (THQ), and lifetime carcinogenic risk (LCR) demonstrated no significant health risks from consuming C. bursa-pastoris and its extracts. The obtained results indicated the higher sensitivity of children to the hazardous effects of PTEs compared to adults. Extensive risk assessments of polluted soils and inhabiting plants are crucial in PTE monitoring. This study underscored its importance and delivered new insights into the contamination of medicinal herbs, aiming to contribute to implementing safety policies in public health protection.
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