Espectroscopia por energia dispersiva para a determinação quantitativa dos principais elementos nas cinzas de leite

Autores

DOI:

https://doi.org/10.33448/rsd-v10i10.18910

Palavras-chave:

Minerais do leite; Espectrometria de raios-X; Cinzas do leite; Análise de leite.

Resumo

O presente estudo preliminar visa a rápida determinação quantitativa dos principais elementos químicos nas cinzas de amostras de leite cru, utilizando espectrometria de fluorescência de raios-X por energia dispersiva. A precisão do método foi satisfatória (coeficiente de variação ≤ 5%). Os valores médios (em mmol·kg -1) obtidos na análise de 32 amostras de leite cru mostraram boa concordância com os dados da literatura nacional e internacional: K (26,1 ± 4,6), Ca (33,8 ± 3,7), P (28,4 ± 2,7), Na (21 ± 3,3) e Mg (4,7 ± 0,5). A concentração residual de Cl (19,0 ± 3,3 mmol·kg-1) foi menor do que o esperado devido às perdas por incineração. Os resultados sugerem um bom potencial de aplicação do método para outros produtos de laticínios.

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Publicado

10/08/2021

Como Citar

PAULA, I. L. de .; RENHE, I. R. T. .; STEPHANI, R. .; PERRONE, Ítalo T. .; CARVALHO, A. F. de .; POMBO, A. W. . Espectroscopia por energia dispersiva para a determinação quantitativa dos principais elementos nas cinzas de leite. Research, Society and Development, [S. l.], v. 10, n. 10, p. e280101018910, 2021. DOI: 10.33448/rsd-v10i10.18910. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/18910. Acesso em: 23 nov. 2024.

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Seção

Ciências Agrárias e Biológicas