Sampling, sample preparation, and analytical variability associated with testing wheat for deoxynivalenol.

摘要: The variability associated with testing wheat for deoxynivalenol (DON) was measured using a 0.454 kg sample, Romer mill, 25 g comminuted subsample, and the Fluoroquant analytical method. total partitioned into sampling, sample preparation, components. Each variance component function of DON concentration equations were developed to predict each regression techniques. effect size, subsample number aliquots on reducing test procedure also determined. For procedure, coefficient variation (CV) at 5 ppm 13.4%. CVs analysis 6.3, 10.0, 6.3%, respectively. variation, used; preparation mill method used. are relatively small compared CV other commodities mycotoxins, such as aflatoxin in peanuts. Even when size used, sampling not largest source error found mycotoxin procedures.