Extraction of light filth from whole wheat flour: methodology validation
Vol. 63 No. 1 (2004), ORIGINAL ARTICLE
Vol. 63 No. 1 (2004)

Extraction of light filth from whole wheat flour: methodology validation

ORIGINAL ARTICLE
https://doi.org/10.53393/rial.2004.63.34799
Published 2004-12-30
Márcia Nogueira Dimov
Seção de Microscopia Alimentar, Divisão de Bromatologia e Química, Instituto Adolfo Lutz
Vivian Regina Silveira
Seção de Microscopia Alimentar, Divisão de Bromatologia e Química, Instituto Adolfo Lutz
Silvia Nagib Elian
Instituto de Matemática e Estatística da Universidade de São Paulo
Marilene De Vuono Camargo Penteado
Departamento de Alimentos e Nutrição Experimental da Faculdade de Ciências Farmacêuticas da Universidade de São Paulo
pdf (Português (Brasil))

Keywords

insect fragment
rodent hair
extraneous materials
light filth
accuracy
precision

How to Cite

1.
Dimov MN, Silveira VR, Elian SN, Penteado MDVC. Extraction of light filth from whole wheat flour: methodology validation. Rev Inst Adolfo Lutz [Internet]. 2004 Dec. 30 [cited 2024 May 11];63(1):91-6. Available from: https://periodicos.saude.sp.gov.br/RIAL/article/view/34799
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Abstract

This investigation aimed to evaluate the modified method performance of extraction of light filth from whole wheat flour, which was carried out at Food Microscopy Laboratory of Instituto Adolfo Lutz, São Paulo-SP by means of intra-laboratory study. For performing this study, the technique standardized and published by International AOAC, 2000 was modified by suppressing the reflux step for defatting the flour. The experimental design was as following: three spiked levels for insect fragments - FI (5, 15, and 30 FI per 50 g), and three for rodent hairs - RH (5,10, and 15 RH per 50 g) with six replicates for each level. Two analysts independently were performed the techniques. No change was observed in insect fragments recovery by means of the modified technique. Our results were of 97%, 96%, and 94% in average for FI, and of 78%, 77%, and 70% for RH in average. These results were higher when  compared with AOAC interlaboratorial study data for FI (94%, 86%, and 86%), but lower for RH recovery comparing to AOAC RH
data (95%, 91%, and 96%). A possible explanation for the low RH recovery in the present study might be on account of the use of magnetic stirring.

https://doi.org/10.53393/rial.2004.63.34799
pdf (Português (Brasil))

References

1. Brickey, P.M. Jr. - Extraneous Materials in Ground Cocoa Bean Products. J. Assoc. Anal. Chem v. 48(3), p:.543-5, 1965

2. Brickey, P.M. et al. - Analytical Entomology of Foods and Drugs. J. Assoc. Anal. Chem., 51(4): 872-6, 1968.

3. Glaze, L.E. e Bryce, J.R. - Extraction of Light Filth from Whole Wheat Flour, Flotation Method: Collaborative Study. J. Assoc. Anal. Chem Int. 77, (5): 1150-2, 1994

4. Horwitz, W. (ed) ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS Official Methods of Analysis método 945.75 A. 17 ed. Gaithersburg. 2000.

5. Método 970.66 A(a)(c). 17 ed. Gaithersburg. 2000.

6. Método 993.26. 17 ed. Gaithersburg, 2000.

7. Nogueira Dimov, M. - Análise de Perigos e Pontos Críticos de Controle no Processamento de Farinha de Trigo Integral. São Paulo, 2000. [Dissertação de Mestrado – Faculdade de Ciências Farmacêuticas, Universidade de São Paulo].

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Copyright (c) 2004 Revista do Instituto Adolfo Lutz

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