Investigation of twelve trace elements in herbal tea commercialized in Brazil

• Autor(a) principal: Milani, Raquel Fernanda
• Data de Publicação: 2019
• Outros Autores: Silvestre, Letícia Kis
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório do Instituto de Tecnologia de Alimentos
• Texto Completo: http://repositorio.ital.sp.gov.br/jspui/handle/123456789/34
• topic: Herbal Tea; Trace Elements; Dietary Intake; Exposure Assessment; Icp-MS

12 trace elements were studied in Boldo, Chamomile, Mate and Peppermint tea.•Cd and Pb levels above Brazilian and MERCOSUR maximum limits were found.•16% of DV for manganese can be reached by a daily intake of one cup of mate tea. In this study twelve trace elements were investigated in herbal tea commercialized in Brazil. Boldo, Chamomile, Mate and Peppermint tea samples were acquired in Brazil local markets and both herbs and their infusions were evaluated. Trace elements were classified in two groups: poorly (Al, As, Ba, Cd, Cr, Fe, Pb and Se) and moderately (Cu, Mn, Ni and Zn) extractable. This patterned showed that even levels above threshold established by Brazilian and MERCOSUR regulations were observed in herbal tea (Cd and Pb in 89% and 78% of mate and peppermint tea samples, respectively), their infusions did not presented toxic levels. The estimative of exposure and dietary intake revealed important values for a daily consumption of a single cup of herbal infusion and an unique composition was also verified for herbal tea samples: although age and origin was unavailable, multivariate analysis classified the samples in four distinct groups.