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- W2045792281 abstract "Abstract Two methods were compared for quantitative determination of trace amounts of mesityl oxide and diacetone alcohol in acetone‐extracted oilseed meals and flours. In the first, a simple, rapid and direct gas chromatographic procedure, a 0.04 g sample of oilseed meal or flour was placed between 2 small glass wool plugs in a liner of the injection port of a gas chromatograph. Water‐saturated molecular sieve 5A (1.1 g) was added over the glass wool sandwich, and the liner was placed in the heated injection port and firmly secured. Mesityl oxide and diacetone alcohol, and other volatiles, were eluted rapidly from the sample onto the column by the combined action of heat, moisture, and carrier gas. The components then were resolved readily by temperature‐programed gas chromatography on a 2 ft × 1/4 in. Porapak P column. The second method, which is time consuming and tedious, is a modification of the Todd azeotropic distillation procedure and was included, for comparison, as a conventional measure of the concentrations of mesityl oxide and diacetone alcohol. Samples of oilseed meals and flours were analyzed by both methods. The results are compared, and the relative merits of the two procedures are discussed." @default.
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- W2045792281 date "1975-03-01" @default.
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- W2045792281 title "Determination of mesityl oxide and diacetone alcohol in oilseed meals and flours" @default.
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- W2045792281 doi "https://doi.org/10.1007/bf02633043" @default.
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