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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Evaluation of sample preparation procedures for aflatoxin analysis in raw peanut

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Author(s):
Maria Antonia Calori-Domingues [1] ; Rafael Condino Rechdan [2] ; Ademar Moretti [3] ; Eduardo Micotti da Gloria [4] ; Ivani Valarini Zambello [5] ; José Eduardo Corrente [6] ; Carlos Tadeu dos Santos Dias [7]
Total Authors: 7
Affiliation:
[1] Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz. Departamento de Agroindústria, Alimentos e Nutrição - Brasil
[2] Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz. Departamento de Agroindústria, Alimentos e Nutrição - Brasil
[3] Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz. Departamento de Agroindústria, Alimentos e Nutrição - Brasil
[4] Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz. Departamento de Agroindústria, Alimentos e Nutrição - Brasil
[5] Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz. Departamento de Agroindústria, Alimentos e Nutrição - Brasil
[6] Universidade Estadual de São Paulo. Departamento de Bioestatística - Brasil
[7] Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz. Departamento de Ciências Exatas - Brasil
Total Affiliations: 7
Document type: Journal article
Source: Química Nova; v. 33, n. 7, p. 1409-1495, 2010-00-00.
Abstract

The variability in aflatoxin 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 Ten analytical samples were withdrawn from each sample/procedure and analyzed by thin layer chromatography.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. (AU)