{"id":348,"date":"2018-01-09T10:00:39","date_gmt":"2018-01-09T12:00:39","guid":{"rendered":"http:\/\/pressreleases.scielo.org\/en\/?p=348"},"modified":"2023-03-28T13:51:01","modified_gmt":"2023-03-28T16:51:01","slug":"research-tests-concentration-of-toxic-metals-in-commercial-yerba-mate-in-the-southern-brazilian-states","status":"publish","type":"post","link":"https:\/\/pressreleases.scielo.org\/en\/2018\/01\/09\/research-tests-concentration-of-toxic-metals-in-commercial-yerba-mate-in-the-southern-brazilian-states\/","title":{"rendered":"Research tests concentration of toxic metals in commercial yerba mate in the southern Brazilian states"},"content":{"rendered":"

By Lisia Maria Gobbo dos Santos, Technologist of Public Health of the Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil<\/strong>\"\"<\/a><\/p>\n

The researchers involved in this study had as objective to determine and compare the concentrations of metals in yerba mate (Ilex paraguariensis) marketed and consumed in the different states of southern Brazil. Previous research had already detected the presence of many vitamins and metals in yerba mate from the mineral composition of the plant itself or the contamination of water resources by the use of fertilizers, pesticides, coal and oil combustion, incineration of urban and industrial waste, among other processes. In this study \u201cArsenic, cadmium and lead concentrations in Yerba mate commercialized in Southern Brazil by inductively coupled plasma mass spectrometry\u201d, published in Ci\u00eancia Rural (Vol. 47, No. 12), the researchers tested 104 samples collected at supermarkets in the states of Paran\u00e1, Santa Catarina and Rio Grande do Sul, determining the concentration levels of arsenic, cadmium and lead metals by using inductively coupled plasma mass spectrometry (ICP-MS), model Nexion 300D (Perkin Elmer). The research was based on previous studies on toxic metals in yerba mate, such as Saidelles et.al. (2009; 2013) and Ernst (2002) on Asian herbs.<\/p>\n

According to the results, the yerba mate samples show contamination by cadmium and lead. The concentration of cadmium was higher than the limit established by ANVISA in 84% of samples from Rio Grande do Sul, 63% from Paran\u00e1 samples and 75% from samples from Santa Catarina. Even so, the concentration of these metals in the infusion is low.<\/p>\n

The researcher Lisia Maria Gobbo dos Santos comments that the study provides important information to assist the competent bodies in assessing the maximum value of metals allowed for these products. The large number of samples from different states and brands of yerba mate, covering almost 80% of the brands available in the market, allowed the researchers to have an overview of the concentration of metals in a much consumed product in the southern region of the country. According to Lisia, the likelihood of risk related to the consumption of these infusions needs to be elucidated by other researches, consolidating the knowledge about yerba mate.<\/p>\n

References<\/h3>\n

ERNST, E. Toxic heavy metals and undeclared drugs in Asian herbal medicines. Trends in Pharmacological Sciences<\/em> [online]. 2002, vol. 23, no. 3, pp. 136-139, ISSN: 0165-6147 [viewed 30 November 2017]. DOI: 10.1016\/S0165-6147(00)01972-6<\/a>. Avaliable from: http:\/\/www.cell.com\/trends\/pharmacological-sciences\/fulltext\/S0165-6147(00)01972-6?_returnURL=http%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0165614700019726%3Fshowall%3Dtrue<\/a><\/p>\n

SAIDELLES, A.P.F., et al<\/em>. An\u00e1lise de metais em amostras comerciais de erva-mate do Sul do Brasil. Alim. Nutr. <\/em>[online]. 2010, vol. 21, no. 2, pp. 259-265, ISSN: 0103-4235 [viewed 30 November 2017]. Avaliable from: http:\/\/serv-bib.fcfar.unesp.br\/seer\/index.php\/alimentos\/article\/viewFile\/996\/a12v21n2.pdf<\/a><\/p>\n

SAIDELLES, A.P.F., et al<\/em>. Determina\u00e7\u00e3o de Cu, Ni e Zn por Icp-Ms e infus\u00f5es da erva-mate comercializadas nas regi\u00f5es do Sul do Brasil. Alim. Nutr. Braz. J. Food Nutr<\/em>. [online]. 2013, vol. 24, no. 3, pp. 283-289, ISSN: 0103-4235 [viewed 30 November 2017]. Avaliable from: http:\/\/serv-bib.fcfar.unesp.br\/seer\/index.php\/alimentos\/article\/view\/291\/2160<\/a><\/p>\n

To read the article, access it:<\/h3>\n

SANTOS, L.M.G., et al<\/em>. Arsenic, cadmium and lead concentrations in Yerba mate commercialized in Southern Brazil by inductively coupled plasma mass spectrometry. Cienc. Rural<\/em> [online]. 2017, vol. 47, no. 12, e2170202, ISSN: 1678-4596 [viewed 30 November 2017]. DOI: 10.1590\/0103-8478cr20170202<\/a>. Avaliable from: http:\/\/ref.scielo.org\/kk5sqx<\/a><\/p>\n

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External link<\/h3>\n

Ci\u00eancia Rural \u2013 CR: <http:\/\/www.scielo.br\/cr<\/a>><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

The Yerba mate commercialized in the Brazilian states of Rio Grande do Sul, Paran\u00e1 and Santa Catarina has a high concentration of cadmium metal, exceeding the limit established by the National Agency of Sanitary Surveillance (ANVISA). Even so, when used in hot infusions, yerba mate exhibits low concentrations of toxic metals such as arsenic, cadmium and lead. …<\/span> Read More →<\/span><\/a><\/span><\/p>\n","protected":false},"author":146,"featured_media":52,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[3,20,12],"tags":[192,21],"class_list":["post-348","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-agricultural-sciences","category-cr","category-press-releases","tag-agronomy","tag-ciencia-rural"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/pressreleases.scielo.org\/en\/wp-json\/wp\/v2\/posts\/348","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressreleases.scielo.org\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pressreleases.scielo.org\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pressreleases.scielo.org\/en\/wp-json\/wp\/v2\/users\/146"}],"replies":[{"embeddable":true,"href":"https:\/\/pressreleases.scielo.org\/en\/wp-json\/wp\/v2\/comments?post=348"}],"version-history":[{"count":5,"href":"https:\/\/pressreleases.scielo.org\/en\/wp-json\/wp\/v2\/posts\/348\/revisions"}],"predecessor-version":[{"id":359,"href":"https:\/\/pressreleases.scielo.org\/en\/wp-json\/wp\/v2\/posts\/348\/revisions\/359"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pressreleases.scielo.org\/en\/wp-json\/wp\/v2\/media\/52"}],"wp:attachment":[{"href":"https:\/\/pressreleases.scielo.org\/en\/wp-json\/wp\/v2\/media?parent=348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pressreleases.scielo.org\/en\/wp-json\/wp\/v2\/categories?post=348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pressreleases.scielo.org\/en\/wp-json\/wp\/v2\/tags?post=348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}