鲜(冻)肉中挥发性盐基氮测定方法的改进研究  

Improvement of the Method for Determination of Volatile Base Nitrogen in Fresh (Frozen) Meat

作　　者：王文正[1] 郭长英[1] 李腾[1] 丁蕊艳[1] WANG Wen-zheng;GUO Chang-ying;LI Teng(Institute of Quality Standards,Shandong Academy of Agricultural Sciences,Ji'nan,Shandong 250100)

机构地区：[1]山东省农业科学院质量标准研究所,山东济南250100

出　　处：《安徽农业科学》2018年第8期168-169,共2页Journal of Anhui Agricultural Sciences

基　　金：山东省农业科学院青年科研基金项目(2016YQN46)

摘　　要：[目的]改进鲜(冻)肉样品中挥发性盐基氮的测定方法。[方法]用福斯8400全自动定氮仪代替传统国标法GB/T5009.44—2003(半微量定氮法)测定鲜(冻)肉类中的挥发性盐基氮,通过方法的改进,对比2种方法的测定结果。[结果]改进后的全自动定氮仪方法与原国标法测定结果无显著差异,且改进后检测方法的精确度优于原国标法,同时避免了人工滴定产生的试验误差。[结论]应用全自动定氮仪测定挥发性盐基氮含量,具有操作简单、省时快速、效率高的优点,适合快速检测大批量样品,改进后的方法值得推广应用。[Objective]To improve the determination of volatile base nitrogen in fresh(frozen)meat samples.[Method]The volatile nitrogen in fresh(frozen)meat was determined by using the fux 8400 automatic nitrogen meter instead of the traditional national standard GB/T5009.44-2003(semi micro nitrogen method).The results of two methods were compared by the improvement of the method.[Result]The result of the improved automatic nitrogen determination method was not significantly different from that of the original national standard method,and the accuracy of the improved detection method was better than that of the original national standard method,and at the same time,the experimental error caused by manual titration was avoided.[Conclusion]The application of automatic nitrogen determination instrument had the advantages of simple operation,time saving and high efficiency.It was suitable for rapid detection of large quantities of samples.The improved method was worth popularizing.

关 键 词：鲜(冻)肉 挥发性盐基氮 半微量定氮法 全自动定氮仪 

分 类 号：TS207[轻工技术与工程—食品科学]