Multi-element analysis in aerials parts of Verbena minutiflora and infusions/Analise multi-elementar das partes aereas da Verbena minutiflora e infuses
This study evaluated the mineral content in the infusions and aerial parts (leaves, flowers and stems) of Gervao (Verbena minutiflora) for four consecutive years using the atomic spectrometry. The different parts of air V. minutiflora showed significant variability between certain mineral levels. Th...
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Veröffentlicht in: | Acta scientiarum. Health sciences 2018-01, Vol.40 (1) |
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Zusammenfassung: | This study evaluated the mineral content in the infusions and aerial parts (leaves, flowers and stems) of Gervao (Verbena minutiflora) for four consecutive years using the atomic spectrometry. The different parts of air V. minutiflora showed significant variability between certain mineral levels. The leaves and flowers showed the highest concentrations of all minerals, except for K, regardless of year of collection: stem (Fe = 50; Ca = 20, Zn = 770; Mg = 7.5; Cu = 4450; Al = 110; Na = 350, K = 13520 mg [kg.sup.-1]), flowers (Fe = 150, Ca = 33, Zn = 1.110, mg = 15, Cu = 7510, Al = 480; Na = 260, K = 10620 mg [kg.sup.-1]), leaves (Fe = 340, Ca = 35; 1930 = Zn, mg = 20, Cu = 12600; Al = 1.160; Na = 420, K = 12180 mg [Kg.sup.-1]). Notably, the concentrations of toxic elements (Pb, Cd and Cr) were below the limits of detection and quantification of the analytical technique in any shoot of Verbena. Minerals determined in aqueous infusions showed proportions ranging from 1.7 to 57.1% of the total value of minerals found in the leaves of Verbena. Keywords: medicinal plants, mineral levels, gervao, verbenaceae, atomic absorption. Este estudo objetivou determinar o teor de minerais nas infusoes e partes aereas (folhas, flores e caules) do gervao (Verbena minutiflora) durante quatro anos consecutivos usando a espectrometria atmica. As diferentes partes aereas da V minutiflora apresentaram variabilidade significativa entre os teores de minerais determinados. As folhas e flores apresentaram as maiores concentracoes de todos os elementos avaliados, exceto para o K, independentemente do ano de coleta: caule (Fe = 50; Ca = 20; Zn = 770; Mg = 7,5; Cu = 4450; Al = 110; Na = 350; K = 13520 mg [kg.sup.-1]), flores (Fe = 150; Ca = 33; Zn = 1,110; Mg = 15; Cu = 7510; Al = 480; Na = 260; K = 10620 mg [kg.sup.-1]), folhas (Fe = 340; Ca = 35; Zn = 1930; Mg = 20; Cu = 12600; Al = 1,160; Na = 420; K = 12180 mg [Kg.sup.-1]). Notavelmente, as concentracoes dos elementos toxicos (Pb, Cd e Cr) ficaram abaixo dos limites de deteccao e quantificacao da tecnica analitica, em qualquer parte aerea da Verbena. Os minerais determinados nas infusoes aquosas apresentaram proporcoes que variaram de 1,7 a 57,1% do valor total de minerais encontrados nas folhas da referida especie de Verbena. Palavras-chave: plantas medicinais, teores minerais, gervao, verbenaceae, absorcao atmica. |
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ISSN: | 1679-9291 |
DOI: | 10.4025/actascihealthsci.v40i1.36890 |