Diacetyl is an important byproduct of the fermentation of beer.The content of diacetyl is the most important index to judge the maturation of beer.

• 双乙酰(2,3-丁二酮)是啤酒发酵过程中产生的重要副产物,双乙酰的含量是衡量啤酒成熟的最重要指标。