Results 181 to 190 of about 25,240 (226)
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A study of the reaction of urea with diacetyl monoxime and diacetyl
Clinical Biochemistry, 1972Summary 1. Four compounds were synthesized under different conditions using either diacetyl or its monoxime as a reagent in reactions with urea. From the absorption spectra and the log10 A vs. wavelength curves, the four compounds were shown to be the same substance as confirmed by the similarity in their infrared spectra. The compounds obey Beer'
R, Lugosi +3 more
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1982
Publisher Summary This chapter describes the assay method, purification, and properties of diacetyl reductase. Diacetyl reductase is assayed by measuring the decrease in absorbance at 340 nm caused by nicotinamide adenine dinucleotide dehydrogenase (NADH) oxidation during diacetyl reduction to acetoin.
Roberto Martín Sarmiento +1 more
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Publisher Summary This chapter describes the assay method, purification, and properties of diacetyl reductase. Diacetyl reductase is assayed by measuring the decrease in absorbance at 340 nm caused by nicotinamide adenine dinucleotide dehydrogenase (NADH) oxidation during diacetyl reduction to acetoin.
Roberto Martín Sarmiento +1 more
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OLFACTORY RESPONSIVENESS TO DIACETYL
Journal of Sensory Studies, 1994ABSTRACTOdor thresholds in the headspace over aqueous solutions of diacetyl (butane‐2,3‐dione) were measured in quadruplicate by a forced‐choice procedure in 53 individuals. Mean individual thresholds varied over a factor of 256, with the group average at .005 μg/ml. Thresholds showed a modest negative correlation with suprathreshold intensity ratings.
HARRY T. LAWLESS +3 more
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The vibrational spectra of diacetyl and diacetyl‐d6
Zeitschrift für Elektrochemie, Berichte der Bunsengesellschaft für physikalische Chemie, 1960AbstractThe infrared and Raman spectra of diacetyl and diacetyl‐d6 have been measured, and vibrational assignments are proposed for the fundamental bands and for several infrared active combination bands. The Raman spectrum of diacetyl‐d6 has not hitherto been determined, and only a few of the stronger Raman bands of diacetyl have been reported in ...
Klaus Noack, R. Norman Jones
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