Amino acid analysis showed that the inactivation of the enzyme was due to the modification of the arginyl residue by butanedione( Table3).

氨基酸分析表明,酶的失活是因为精氨酸基。

Butanedione (diacetyl) is an important aroma chemical with strong butter flavor.In traditional method, 2, 3-Butanedione is produced via synthetic way.

摘要2，3-又称双乙酰，是一种黄色至浅绿色具有强烈奶油香味的重要香料。