流动化学分析仪快速测定啤酒生产过程游离氨基氮含量  

Rapid Test of Free Amino Nitrogen Content in Beer-brewing by Flow Chemical Analyzer

作　　者：李丽[1] 宗绪岩[1] 罗惠波[1] 卫春会[1] 江文涛[1] 

机构地区：[1]四川理工学院生物工程学院,四川自贡643000

出　　处：《酿酒科技》2013年第6期104-106,共3页Liquor-Making Science & Technology

基　　金：四川省教育厅科研项目(编号:11ZB248);四川省教育厅科研重点项目(编号:12ZA100)

摘　　要：为了更快捷、更精确的测定啤酒发酵过程中样品游离氨基酸含量,选用甘氨酸作为标准品,使用流动化学分析仪对已知样品进行了测定。结果表明,在30～150 mg/L浓度范围内,具有良好的线性关系(R=0.9997)和重现性(RSD范围为0.82%～1.46%),空白加标回收率较准确(98.80%～102.67%),并具有较低的检出限(1.244 mg/L)。该方法可作为一种快速、准确的检测方法应用于生产。To determine free amino nitrogen content in beer-brewing quickly and accurately,flow chemical analyzer was used for the detection of beer samples with glycine as the standard.The data showed that there were good linear relations（R=0.9997） and repeatability（RSD range 0.82 % ～1.46 %） as free amino nitrogen content ranged from 30 mg/L to 150 mg/L.The recovery rate of control beer samples was accurate（98.80 %～ 102.67 %）.And the detection limit was low（1.244 mg/L）.Such method could be used in beer production because of its rapid and accurate measuring results.

关 键 词：啤酒 流动分析仪 游离氨基氮 茚三酮 

分 类 号：O657[理学—分析化学] TS262.5[理学—化学]