HPLC-MS法测定饮料中甜蜜素等6种非糖类甜味剂含量

摘要

[目的]建立快速、准确、高灵敏度的测定甜蜜素等6种甜味剂的分析方法.[方法]采用高效液相色谱-串联质谱法(HPLC-MS)测定市售饮料中的甜蜜素、安赛蜜、阿斯巴甜、纽甜、三氯蔗糖、甜菊糖苷的含量,同时采用正负离子模式,并进行多反应检测(MRM).[结果]该方法的线性范围为20～1 000 ng/mL,标准曲线线性良好,其回归方程及相关系数R分别为:甜蜜素,Y=3 380X-49 100盈=0.9997;安赛蜜,Y=8 620X +21 700,R=0.998 7;阿斯巴甜,Y=4 070X-12 400,R=0.999 7;纽甜,Y=5 930X-21 300,R=0.9994;三氯蔗糖,Y=123X+ 425,R=0.999 7;甜菊糖苷,Y=332X-967,R=0.997 1.最低检出限分别为甜蜜素0.1 mg/kg、安塞蜜0.2 mg/kg、阿斯巴甜0.2 mg/kg、纽甜0.03 mg/kg、三氯蔗糖0.2 mg/kg、甜菊糖苷0.2 mg/kg.[结论]该方法操作简便、快速,是食品中甜蜜素等6种非糖类甜味剂的快速而准确的检测方法.%[Objective] In order to establish a rapid,accurate,high sensitivity method for determination of Cyclamate Sodium etc.six kinds of sweetening agent.[Method] The contents of Cyclamate Sodium,Acestlfame,Aspartame,Neotame,Sucralose and Stevioside in commercially available beverage were determined by HPLC-MS,the positive and negative ion modes were used to conduct MRM.[Result] The results showed that a good linearity was obtained for the standard curve with 20 to 1 000 ng/mL,and the regression equation and correlation coefficient R were:Cyclamate Sodium:Y=3 380X-49 100,R =0.999 7;Acesulfame Y=8 620X +21 700,R =0.998 7;Aspartame:Y=4 070X-12 400,R =0.999 7;Neotame:Y=5 930X-21 300,R =0.999 4;Sucralose:Y=123X +425,R =0.999 7;Stevioside:Y =332X-967,R =0.997 1.The minimum detection limits were:Cyclamate Sodium:0.1 mg/kg;Acesulfame:0.2 mg/kg;Aspartame:0.2 mg/kg;Neotame:0.03 mg/kg;Sucralose:0.2 mg/kg;Stevioside:0.2 mg/kg.[Conclusion] This method is rapid,simple,sensitive and accurate,and it is a suitable method for rapid determination of Cyclamate Sodium etc.six kinds of sweetening agent of non-carbohydrate in the food.