Diacetyl was an important flavor component produced by beer yeast during the metabolic way of amino acid in beer brewing.Its content was an important index to estimate the beer quality.

• 双乙酰是啤酒生产过程中由酵母在合成氨基酸的途径中产生的重要风味物质,其含量是衡量啤酒成熟的重要标志。