Automated Method for Measuring Diacetyl in Beer
Author Information
Author(s): J. C. Buijten, B. Holm
Primary Institution: Department of Alcohol and Drug Addiction Research, Karolinska Institutet
Hypothesis
The aim of the work described in this paper was to develop a fully automated method for the colorimetric determination of diacetyl in beer using a Technicon AutoAnalyzer II system.
Conclusion
The automated method for measuring diacetyl in beer showed a high correlation with gas chromatography results.
Supporting Evidence
- The correlation between the automated method and gas chromatography was highly significant, with R = 0.996.
- The precision of the AutoAnalyzer method was repeatable to + 3.170.
- The distillation step was identified as the most critical stage in the determination of diacetyl.
Takeaway
This study created a machine that can quickly and accurately measure a chemical in beer that affects its taste.
Methodology
The study used an automated distillation method coupled with a Technicon AutoAnalyzer II to measure diacetyl in beer samples.
Limitations
The study noted that prolonged distillation and high temperatures could lead to inaccurate results.
Statistical Information
P-Value
< 0.001
Statistical Significance
p<0.001
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