A simple and accurate GC/MS method for the quantitative analysis of diacetyl in beer and wine |
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| Authors: | Brigitte Martineau Terry Acree Thomas Henick-Kling |
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| Affiliation: | (1) Department of Food Science and Technology, Cornell University, 14456 Geneva, NY, USA |
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| Abstract: | A GC/MS method for the quantification of diacetyl is described. Diacetyl is derivatized with 4,5-dichloro-1,2-diaminobenzene to form 6,7-dichloro-2,3-dimethylquinoxaline (DCDMQ). The derivative is extracted in benzene and quantified by GC/MS. Formation of DCDMQ is linearly correlated with diacetyl concentration. The method is rapid, sensitive (determination limit 0.0005  g/mL) precise (standard error < 2%), and accurate (recovery of diacetyl 91.5% + 1.5%). |
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