摘要
为提高肉与肉制品中挥发性盐基氮测定速度,进行了肉与肉制品中挥发性盐基氮(GB/T5009.44-2003)国家标准测定方法的改进试验:①采用BUCHI-K360型全自动定氮仪测定法替代半微量定氮法;②采用碳酸钾溶液代替氧化镁混悬液作为碱性试剂。通过改进法的重复性试验,回收率试验和两种测定方法的差异显著性试验结果表明,①改进法的方法重复性试验的RSD小于1.0%;②改进法的回收率和加标回收率在98.39%～l00.72%之间。③改进法与标准法测定结果的t值0.319<。该法适合肉与肉制品中挥发性盐基氮的快速测定。
In order to quickly determine the TVB-N in meat and meat products, the standard means of TVB-N in meat and meat products were improved. Such as： 1） TVB-N of mutton was analyzed by BUCHI -K360 type automatic azotometer; 2） Using Potassium carbonate as alkalescence reagent. The results showed that： 1） relative standard deviation（RSD） of improve means low 1% ; 2） Recovery and add Standard of improve means from 98.39% to 100.72%;3） improve and standard means t value 0.319〈t005^12 .The method was adequate for quickly determine the TVB-N of Meat and meat products.
出处
《肉类研究》
2009年第10期58-60,共3页
Meat Research
