摘要
[目的]对蜜饯制品中SO2残留的检测方法进行优化。[方法]采用BUCHI全自动凯氏定氮仪替代全玻璃蒸馏装置进行蒸馏蜜饯制品中的SO2,通过正交试验优化蒸馏过程,并按国标GB/T5009.34-2003滴定法测定SO2含量。[结果]蒸馏最佳条件为时间9 min,加水体积50 ml,取样量5 g;相对标准偏差(RSD)在0.7%～1.4%,回收率在96.8%～98.8%。[结论]该方法反应速度快,精密度高,适用于蜜饯制品中SO2残留量的测定。
[Objective] The aim was to optimize the determination method of sulfur dioxide residue in preserved fruit.[Method] Distillation of sulfur dioxide residue in preserved fruit was attempted by using the method of BUCHI auto-Kjeldahl＇s apparatus replaced the glass distiller,and the content of sulfur dioxide was determined according to the international standard GB/T5009.34-2003.[Result]The results showed that the optimum distillation conditions based on orthogonal test were as follows： samples 5 g,water 50 ml,distillation time 9 min.The relative standard deviations of this method were 0.7%-1.4%,the recoveries were 96.8%-98.8%.[Conclusion] This method was rapid,accurate,and suitable for the determination of sulfur dioxide residue in preserved fruit.
出处
《安徽农业科学》
CAS
2012年第16期8956-8957,9040,共3页
Journal of Anhui Agricultural Sciences
关键词
蜜饯制品
SO2残留
检测
优化
Preserved fruit
Sulfur dioxide residue
Determination
Optimization
