摘要
比较不同方法对酱油中三氯蔗糖能力验证样品的检测,并对结果进行分析。样品用水稀释后经HLB固相萃取柱净化富集,采用高效液相色谱-蒸发光散射检测器法和超高效液相色谱-串联质谱法检测三氯蔗糖的含量。高效液相色谱-蒸发光散射检测器法进行检测时,采用空白基质提取液配制标准曲线溶液,回收率明显改善。采用超高效液相色谱-串联质谱法进行检测时,首次发现了其铵加和物离子的稳定存在,正离子模式检测比负离子模式响应提高近4倍,两能力验证样品的Z值分别是-1.0、-0.9,评价为满意。2种方法准确、可靠,均可用于酱油中三氯蔗糖含量测定,高效液相色谱-蒸发光散射检测器法在基层实验室普遍适用,超高效液相色谱-串联质谱法更加快速、灵敏、准确,但其检测成本、对人员技术要求更高。
Different methods were compared in the detection of the sucralose proficiency test in soy sauce and the results were analyzed.The samples were detected by high performance liquid chromatography-evaporative light scattering detector(HPLC-ELSD)and ultra-performance liquid chromatography-tandem mass spectrometry(UHPLC-MS/MS)after diluted in the water and purified by HLB column.In the HPLC-ELSD method,the recovery was significantly improved when the standard curve was prepared by blank matrix extracts.In the UHPLC-MS/MS method,[M+NH_(4)]^(+)was first found stable existence,and the response of ESI+mode is about 4 times higher than that of ESI-mode.The Z values of this two proficiency testing samples were -1.0 and -0.9,rated as satisfactory.Both methods were accurate and reliable and can be used in the sucralose detection of soy sauce.The former method is generally applicable in common laboratories.The latter method is faster,more sensitive and accurate,while with higher testing cost and higher technical requirements for personnel.
作者
朱青
曹美萍
张继春
ZHU Qing;CAO Meiping;ZHANG Jichun(Shanghai Songjiang Institute for Food and Drug Control,Shanghai 201600,China)
出处
《食品与发酵科技》
2023年第6期155-160,共6页
Food and Fermentation Science & Technology
关键词
高效液相色谱-蒸发光散射检测器法
超高效液相色谱-串联质谱法
酱油
三氯蔗糖
能力验证
high performance liquid chromatography-evaporative light scattering detector
ultra-performance liquid chromatography-tandem mass spectrometry
soy sauce
sucralose
proficiency test
