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Removal of aflatoxins from oilseed meals by extraction with aqueous isopropanol
Author(s) -
Rayner Eric T.,
Dollear F. G.
Publication year - 1968
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/bf02668965
Subject(s) - aflatoxin , cottonseed meal , cottonseed , extraction (chemistry) , chemistry , solvent , aqueous solution , chromatography , azeotrope , food science , soybean meal , organic chemistry , distillation , raw material
Aqueous isopropanol was found to be an effective solvent for removal of aflatoxins from contaminated cottonseed and peanut meals. Extraction with 6 passes of 80% aqueous isopropanol at 60C resulted in complete removal of aflatoxins in both meals, as measured by thin‐layer chromatography. Under similar extraction conditions, the isopropanol‐water azeotrope, 88% isopropanol by weight, removed 88% of the total aflatoxins in peanut meal, a reduction from 82 to 10 ppb, and 79% of the total aflatoxins in cottonseed meal, a reduction from 214 to 46 ppb. Lower temperatures were less effective with both solvent systems.