A.V. Nikulin, PhD; E.A. Platonov; O.G. Potanina, PhD Peoples’ Friendship University of Russia; 6, Miklukho-Maklai St., Moscow 117198, Russian Federation

Introduction. Due to recent environmental deterioration, it is very important to study the mineral composition of raw medicinal plant materials (RMPM). The promising task is also to search for raw plant materials, a potential source of essential trace elements for the normal functioning of the human body. Objective: to determine the levels of trace elements in RMPM of different morphological groups (flowers, roots, herb, leaves, and seeds) containing polysaccharides. Material and methods. The investigation objects were industrial samples of elecampane (Inula) roots and rhizomes, lime (Tilia) blossoms, dandelion (Taraxacum) roots, plantain (Plantago) leaves, marshmallow (Althaea) roots, violet (Viola) herb, flax (Linum) seeds, and burdock (Arctum) roots. The analytes were determined using inductively coupled plasma atomic emission spectrometry (Varian 720-ES, axially-viewed plasma) and electrothermal atomization atomic absorption spectrometry (Varian AA 240, GTA 120). Results. The levels of 9 essential and toxic elements were measured in 9 types of RMPM containing polysaccharides. The content of the analyzed trace elements in the raw materials was one order of magnitude lower than the recommended daily intake level for dietary supplements, but 2-10 times higher than in the fruits and vegetables, which are the richest in relevant elements. Elevated aluminum levels were found in all the samples. Conclusion. When determining the safety of RMPM, it is necessary to pay attention not only to the content of lead, cadmium, mercury, and arsenic, but also to that of aluminum and barium.

elecampane (Inula) roots and rhizomes
lime (Tilia) blossoms
dandelion (Taraxacum) roots
plantain (Plantago) leaves
marshmallow (Althaea) roots
violet (Viola) herb
flax (Linum) seeds
and burdock (Arctum) roots
element composition
inductively coupled plasma atomic emission spectrometry
electrothermal atomization atomic absorption spectrometry

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