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Separation of aflatoxin‐contaminated cottonseed based on physical characteristics of seed cotton and ginned seed
Author(s) -
Lee Louise S.,
Cucullu Alva F.,
Pons W. A.,
Russell T. E.
Publication year - 1977
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/bf02894417
Subject(s) - aflatoxin , cottonseed , contamination , horticulture , biology , botany , food science , ecology
and Summary Samples of aflatoxin‐contaminated stored ginned cottonseed and of freshly harvested seed cotton and companion ginned seed were examined under long wave ultraviolet (UV) and visible light to develop physical criteria for separating aflatoxin‐contaminated seed from sound seed. Seed locks characterized by bright greenish‐yellow, or cateye, fluorescence when viewed under long wave UV light were separated from samples of 12 varieties of freshly harvested seed. As a result, 80–100% (mean 96%) of the aflatoxin contamination that was concentrated in 2–9% (mean 6%) of the seed weight was effectively removed. The cateye fluorescence separation technique was slightly less effective for removing aflatoxins from companion freshly harvested, ginned samples, but most of the aflatoxins were concentrated in only 0.5–3% (mean 2%) of the seed weight. This approach was relatively ineffective for stored ginned seed, probably due to deterioration of the cateye fluorescence.