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Sampling cottonseed lots for aflatoxin contamination
Author(s) -
Velasco James,
Whitaker T. B.,
Whitten M. E.
Publication year - 1975
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/bf02672168
Subject(s) - aflatoxin , cottonseed , contamination , coefficient of variation , sample (material) , mathematics , zoology , environmental science , statistics , toxicology , biology , chemistry , microbiology and biotechnology , chromatography , ecology
Large samples called “sublots” were drawn from 41 commercial lots of contaminated cottonseed. Each sublot was subdivided into twenty 5 lb samples which were analyzed for aflatoxin. The mean, median, variance, coefficient of variation, and the estimated range among the sample concentrations were computed. The results indicated that: (A) the variance among sample concentrations was large and was found to be a function of sample concentration and (B) the distribution of sample concentrations was skewed; the density of sample values was greater below the sublot concentration.