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Determination of residual solvent in oilseed meals and flours: I. Dimethyl formamide extraction procedure
Author(s) -
Fore S. P.,
Dupuy H. P.
Publication year - 1970
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/bf02680160
Subject(s) - solvent , formamide , octane , hexane , chromatography , chemistry , acetone , extraction (chemistry) , residual , aqueous solution , residual oil , cottonseed , organic chemistry , food science , mathematics , algorithm
A procedure is described for determination of residual acetone and hexane in cottonseed and soybean meals and flours by extraction of the residual solvent with dimethyl formamide (DMF)‐water (95∶5) followed by gas liquid chromatography analysis of the DMF extracts. A representative group of samples was analyzed both by this procedure and one employing iso‐octane as extractant. In all cases where residual solvent was found, the amount was markedly greater when aqueous DMF was the extracting solvent.