Publicação: Avaliação de procedimentos de preparo de amostra de amendoim in natura para análise de aflatoxinas
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The variability in afatoxin B1 concentration among peanut subsamples of 4 sample preparation procedures was evaluated. For each procedure, 18 samples were prepared involving dry comminuting/homogenization or dry roughly comminuting followed by the preparation of a aqueous slurry. Ten analytical samples were withdrawn from each sample/procedure and analyzed by thin layer chromatography. The coefficient of variation (CV%) among each set of 10 analytical samples was assumed to be associated with the sample preparation procedure. The procedure that made use of a subsample mill and preparation of a subsample slurry, showed lower variability (CV%) among the analytical subsamples.
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Aflatoxin, Sample preparation, Variability
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Português
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Quimica Nova, v. 33, n. 7, p. 1490-1495, 2010.
