Suplementos alimentares: avaliação multielementar e influência do consumo por praticantes de atividade física

• Ano de defesa: 2017
• Autor(a) principal: Paula Maria Borges de Salles
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: K0-aani; Biomonitor; Análise por ativação neutrônica; Suplementos alimentares; Cabelo; Suplementos dietéticos; Engenharia nuclear; Análise por ativação nuclear
• Link de acesso: http://hdl.handle.net/1843/BUBD-AW6PL9

The purpose of this study was to verify if the consume of dietary supplements has been contributing to increase the content of essential and non-essential inorganic chemical elements in physically active individuals, evaluating hair as biomonitor. The neutron activation analysis, k0-method, using larger sample, was applied on multielementar concentration determination in dietary supplements and hair biomonitors using the TRIGA MARK I IPR-R1 reactor located at CDTN/CNEN, Belo Horizonte. The elemental concentrations obtained in eleven brands of dietary supplements were compared with values displayed on the labels of the products. The results were also compared with maximum values foreseen in the Brazilian legislations and with the recommended values by health and food safety international agencies. It was found that most supplements have no information about their macro and micronutrients composition in their packs. The information, when present, is different from those obtained experimentally. Regarding the biomonitor analysis, hair samples from three different groups were collected: the comparative group, composed by sedentary individuals who did not take supplements; the group composed by physically active individuals and did not consume supplements; and other group composed by physically active individuals who made use of dietary supplements. The elemental analysis showed that Zn was obtained in all samples. The elements Au, Br, Na and Zn were determined in all samples of Comparative Group; Au, Br, Cr and Zn in physically active individuals group and non-consumers of supplements and Cr, Na and Zn, in physically active individuals group and consumers of supplements. Variance test, basing on elemental concentration in biomonitors pointed out that, in this sampling, the groups compounded by physically active individuals were similar regardless of whether or not they consume dietary supplements; however, they were different from the comparative group.