【摘要】 描述一种快速可靠的测定啤酒中双乙酰及其它连二酮的分析方法。 跟EBC分析法一样,新的测定法也是以分光光度法测定2、3——二烃基喹喔啉为基础。两种方法相比,对所加双乙酰的回收值以及变化系数,改进法都比EBC法有明显的改善,这种方法即快速又难确,被推荐用于质量控制方面。更多还原

【Abstract】 A ripid and reliable analytical method for the determination of diacetyl and other vicinal diketones in beer is described.Like Analytica EBC, the new assay is based on the spectrophotometric stimation of 2, 3-dialkylquinoxalines. A comparison between these two methods is made, from which it can be concluded that both the recovery figures for added diacetyl and the coefficient of variation found in the modified method show a notable improvement compared with the EBC mehod. This method is recommended for quality control use on the basis of its speed and accuracy.更多还原