Abstract In this collaborative BCOJ study, the Alcolyzer method, after removing yeast by centrifugation, was found to be applicable to the analysis of alcohol concentration in pitching yeast slurries and yeast containing samples during fermentation. This method has been adopted for inclusion in the Methods of Analysis of the BCOJ, as the differences between the average alcohol concentrations measured by the Alcolyzer method and the distillation method were as small as 0.01 to 0.04% (v/v) and considered comparable. This method has been admitted as a reasonable and accurate method for the analysis of alcohol concentration in yeast-containing beer samples by the National Tax Agency Japan.

中文翻译：

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Alcolyzer 发酵过程中酵母浆和样品中的酒精浓度分析：2017-2018 BCOJ 合作工作报告

摘要 在这项 BCOJ 协作研究中，发现 Alcolyzer 方法在通过离心去除酵母后，适用于在发酵过程中分析酵母浆和含有酵母的样品中的酒精浓度。该方法已被纳入 BCOJ 的分析方法，因为通过 Alcolyzer 方法和蒸馏方法测量的平均酒精浓度之间的差异小至 0.01 至 0.04% (v/v)，并且被认为具有可比性。该方法已被日本国税厅认可为分析含酵母啤酒样品中酒精浓度的合理且准确的方法。