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.
出处
《酿酒科技》
北大核心
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)
关键词
啤酒
流动分析仪
游离氨基氮
茚三酮
beer
flow chemical analyzer
free amino nitrogen
ninhydrin
作者简介
李丽(1982-),女,四川理工学院讲师,博士。
通讯作者:宗绪岩。