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The determination of dimethyl sulphoxide in aqueous solution
Author(s) -
Anness Brian J.
Publication year - 1981
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740320407
Subject(s) - chemistry , aqueous solution , hydrochloric acid , dimethyl sulfoxide , chromatography , sulfur , chloride , methionine , gas chromatography , nuclear chemistry , organic chemistry , amino acid , biochemistry
Abstract A method for the determination of dimethyl sulphoxide (DMSO) in aqueous extracts is described. DMSO is reduced using stannous chloride and hydrochloric acid to dimethyl sulphide which can be measured by gas‐liquid chromatography. Other sulphur compounds, including S‐methyl methionine, have no effect on the assay. Levels of DMSO in solution higher than 10 μg litre −1 can be readily determined. In samples of brewery wort the levels of DMSO were within the range of 261‐411 μg DMSO litre −1 and repeated determinations on two samples of beer gave mean values of 417 and 627 μg DMSO litre −1 with coefficients of variation of 13.7 and 11.8% respectively.