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Interrelationships among selected essential elements in medicinal plant raw materials and their water-extractable forms

100%
Konieczynski P., Wesolowski M.
Herba Polonica
|
2013
|
tom 59
|
nr 2
In the study, the relationships were investigated among N, P, Fe, Zn, Mn and Cu, in medicinal plant raw materials (herbal bags) and their water-soluble chemical forms in infuses. 42 independent samples of plant materials were chosen, represented by different morphological plant parts as herbs, leaves, flowers and fruits. The elements were determined by UV/Vis spectrometry (non-metals), and FAAS (metallic elements) after previous mineralization of plant samples (total concentrations), and directly in herbal teas (water-extractable forms). Most frequently the correlations between non-metals and Zn and Mn occurred, both between their total contents the water-extractable forms. Statistically significant correlations were also found in pairs: Zn-Mn, Fe-Zn, Mn-Fe, and Cu-Zn. Application of multivariate analysis revealed that cluster analysis grouped the studied samples into clusters with similar levels of the analyzed elements, and principal component analysis allowed the identification of water-extractable Zn, P-PO4 and water-extractable Cu as the most crucial factors determining the differentiation of the studied plant samples.
2

The influence of lead on occurrence of some essential elements in teeth

86%
Malara P., Kwapulinski J., Malara B.
Acta Toxicologica
|
2004
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tom 12
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nr 1
3

Determination of zinc, iron, nitrogen and phosphorus in several botanical species of medicinal plants

72%
Konieczynski P., Wesolowski M.
Polish Journal of Environmental Studies
|
2007
|
tom 16
|
nr 5
785-780
The total concentration of zinc, iron, nitrogen and phosphorus, as well as their water and acetic acid extractable forms - nitrate nitrogen, ammonium nitrogen and phosphate phosphorus - were determined in st. John's wort herb (Hypericumperforatum L.) yarrow herb (Achillea millefolium L.), nettle leaves (Urtica dioica L .) and birch leaves (Betula pendula Roth.), collected from four natural locations in northern Poland. The content of total Zn and Fe was determined by FAAS, whereas of total N, total P and their extractable forms by UV/Vis spectrophotometry. The obtained results showed that particular plant species differed significantly in the contents of Zn, Fe, P and P-P04. The area of harvest didn't have major effects on the concentration of analyzed elements in the studied plant species. Significantly, 13 inter-element correlations were obtained for the studied elements, mainly between iron and nitrogen, iron and phosphorus, phospho­rus and nitrogen and among their water-extractable forms, indicating their involvment in metabolism of medicinal plants. Nutritional and toxicological aspects of the analyzed plants used commonly as folk medi­cines in Poland were evaluated by comparison of the obtained results with the WHO/FAO norms.
4

Detection of total phenols, essential and toxic elements in Latvian whole grain bread

72%
Bobere N., Podjava A., Jakobsone I.
Polish Journal of Food and Nutrition Sciences
|
2011
|
tom 61
|
nr Suppl.1
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