自制测定蛋白质用快速催化片剂消化效果的试验报告  

Report on the effect of digestion with self-made cataIyst for the determination of protein

作　　者：姚野梅[1] 李锦才[1] 朱钢华 

机构地区：[1]上海水产大学食品工程系

出　　处：《化学试剂》1996年第3期176-178,共3页Chemical Reagents

摘　　要：食品中蛋白质含量测定需采用浓硫酸消化。经典方法采用硫酸铜加硫酸钾作催化剂，消化时间长，采用自制的测定蛋白质的快速催化片剂，消化时间可缩短２～６倍，蛋白质测定结果的精密度小于１％，方法误差小于１％，自制催化片剂可代替经典催化剂和进口催化片剂产品。Protein in foods is determined after digestion with sulphuric acid. Traditional method uses copper sulphate and potassium sulphate as catalysts, but the digesting time is too long. We have developed a kind of catalyst tablet for use in protein determination, which can shorten the digesting time by a factor of 2～6. The relative standard deviation of results is below1%and the error is below 1%. This kind of catalyst tablet can replace the traditional catalyst and imported products.

关 键 词：蛋白质 消化 食品分析 催化剂 片剂 

分 类 号：TQ426.99[化学工程] TS207.3[轻工技术与工程—食品科学]