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Macro, minor and trace elements in bovine milk from two Brazilian dairy regions

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Abstract

Brazil started to export dairy products in the early 2000s and since then has slowly consolidated its position in the world dairy market. To ensure the position in the international market by improving the quality of milk produced in the country, the government created a national program and a network of laboratories for milk quality. The Normative Instruction 51 (Instrução Normativa 51—IN51) was introduced within the national program establishing parameters for milk quality and safety. In spite of not being included in the IN51, chemical elements are under thorough discussion as quality parameters for their nutritional and toxicological relevance. This work aimed at evaluating the quality of milk from one of the major dairy regions in Brazil, located in the state of Rio Grande do Sul, by the determination of chemical elements, comparing the results with those previously obtained for milk samples from the main dairy region of the country, in the state of Minas Gerais. Samples were collected from cooling tanks in nineteen dairy farms. After freeze drying, chemical elements were determined by instrumental neutron activation analysis (INAA) and inductively coupled plasma mass spectrometry (ICP-MS). For ten out of sixteen chemical elements determined, there were significant differences between samples from both producing regions (p < 0.01).

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Acknowledgments

The authors are thankful to the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) for the financial support, to IPEN/CNEN for the irradiation of samples with neutrons, and to people who participated in the sampling and analyses, particularly the chemist Ms. Iolanda A. Rufini.

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Authors and Affiliations

  1. Laboratório de Radioisótopos, Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo (USP), Av. Centenário 303, Piracicaba, SP, 13416-000, Brazil

    Luís Gustavo Cofani dos Santos, Elisabete A. De Nadai Fernandes, Simone Silveira Nery da Silva Cofani dos Santos & Márcio Arruda Bacchi

  2. Departamento de Ciências Exatas, Escola Superior de Agricultura Luiz de Queiroz (ESALQ), Universidade de São Paulo (USP), Av. Pádua Dias 11, Piracicaba, SP, 13418-900, Brazil

    Gabriel Adrián Sarriés

  3. Laboratório de Toxicologia e Essencialidade de Metais, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto (FCFRP), Universidade de São Paulo (USP), Av. do Café s/n, Ribeirão Preto, SP, 14049-903, Brazil

    Fernando Barbosa Júnior

Authors
  1. Luís Gustavo Cofani dos Santos
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  2. Elisabete A. De Nadai Fernandes
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  3. Simone Silveira Nery da Silva Cofani dos Santos
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  4. Márcio Arruda Bacchi
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  5. Gabriel Adrián Sarriés
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  6. Fernando Barbosa Júnior
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Correspondence to Simone Silveira Nery da Silva Cofani dos Santos.

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dos Santos, L.G.C., De Nadai Fernandes, E.A., da Silva Cofani dos Santos, S.S.N. et al. Macro, minor and trace elements in bovine milk from two Brazilian dairy regions. J Radioanal Nucl Chem 291, 207–211 (2012). https://doi.org/10.1007/s10967-011-1305-6

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  • DOI: https://doi.org/10.1007/s10967-011-1305-6

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