Variability associated with testing corn for aflatoxin | Zendy

Whitaker T. B. | Zendy; Dickens J. W. | Zendy; Monroe R. J. | Zendy

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Variability associated with testing corn for aflatoxin

Author(s) -

Whitaker T. B.,

Dickens J. W.,

Monroe R. J.

Publication year - 1979

Publication title -

journal of the american oil chemists' society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.512

H-Index - 117

eISSN - 1558-9331

pISSN - 0003-021X

DOI - 10.1007/bf02909519

Subject(s) - aflatoxin , meal , zoology , mathematics , statistics , variance components , variance (accounting) , analysis of variance , sample (material) , food science , biology , chemistry , chromatography , accounting , business

The sampling, subsampling (both coarse and fine ground meal), and analytical variances associated with testing shelled corn for aflatoxin were estimated by the use of 500 g samples, 50 g subsamples, and the CB method of analysis. The magnitudes of the variance components increased with an increase in the aflatoxin concentration. Functional relationships were developed to predict the variance for a given aflatoxin concentration and any size sample, subsample, and number of analyses. At 20 ppb total aflatoxin, the coefficient of variantion associated with a 4.54 kg sample, 1 kg subsample of coarsely ground meal (passes a #14 screen), a 50 g subsample of finely ground meal (passes a #20 screen) and one analysis were 21, 8, 11, and 26%, respectively.

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