毛细管气相色谱法快速测定鸡粉和鸡精调味料中甜蜜素OACSTPCD

Through the improvement of pretreatment method and derivatization conditions,a gas chromatography method for a rapid determination of sodium cyclamate in chicken powder seasoning and chicken essence was established.The results showed that,when the concentration of sulfuric acid increased from 200 to 500 g/L,the recovery rates of chicken essence samples were significantly improved,but the recovery rate of chicken powder seasoning sample did not improve much,the recovery rate of sample spiking ranged from 80.15%to 94.38%.When the mass concentration of sulfuric acid solution was gradually increased from 500 to 50 g/L,the average spiked recovery rate of the sample increased parabolically.Compared with the first method of gas chromatography in GB 5009.97-2016,this study focused on solving key technical problems in the determination of cyclamate in chicken essence and chicken powder samples.It was fast,accurate with high recovery rate.The pretreatment operation was carried out in a 50 mL centrifuge tube.The steps were relatively simple and efficient.The method in this study is suitable for a rapid detection of large quantity samples.