分立式流动分析法测定啤酒总SO2  

Determination of Sulfur Dioxide in Beer by Segmented Flow Analyzer

作　　者：王安平 王荣 胡华强 Wang Anping, Wang Rong, Hu Huaqiang, Lin zhiping （ Beijing Yanjing Brewery Group Corporation Research Centre ）

机构地区：[1]北京燕京啤酒股份有限公司技术中心, 101300

出　　处：《啤酒科技》2014年第7期27-31,共5页Beer Science and Technology

摘　　要：采用分立式啤酒分析仪,用5,5＇二硫代双硝基苯甲酸（DTNB）为显色剂能快速、精确测定啤酒中的总SO2.方法的回收率在93.7％～104.4％之间,一次实验的重复性变异系数0.43％,多次实验的重复性变异系数1.5％～4.7％.对收集的18个样品用美国化学家协会（ASBC）标准方法盐酸副玫瑰苯胺比色法与之做了对比,收集数据用配对数据T检验表明两方法没有显著性差异.A spectrophotometric method using dithiobisnitrobenzoic acid （DTNB）as the color reagent for determination of total sulfur dioxide in Beer by segmented flow analyzer was described. The recoveries were 93.7 to 104.4%, reproducibility coefficients of once analyses was 0.43%, reproducibility coefficients of variety analyses ranged from 1.5 to 4.7%. Eighteen beer samples were tested by segmented flow analyzer and the spectrophotometric method using para-rosaniline recommended by the American Society of Brewing Chemists （ ASBC ） .Based on the paired t test for differences in means for SO2 analyses, the two method were not significantly different at the 95% confidence level.

关 键 词：总SO2 分立式啤酒分析仪 重复性变异系数 回收率 

分 类 号：TS262.5[轻工技术与工程—发酵工程;轻工技术与工程—食品科学与工程]