QuEChERS-高效液相色谱-串联质谱法测定酵母抽提物中9种黄色合成色素

Journal of Analytical Science(2016)

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Abstract
本文建立了酵母抽提物中9种黄色合成色素的高效液相色谱-串联质谱(HPLC-MS/MS)分析方法.样品用乙腈-甲醇(5∶5,V/V)提取,经聚苯乙烯/二乙烯苯(PEP)和C18粉净化,以Zorbax Eclipse Plus C18柱(100×3.0 mm,1.8μm)分离,流动相为乙腈-10 mmol/L NH4Ac,梯度洗脱.采用电喷雾负离子源(ESI)、多重反应监测(MRM)模式检测,基质匹配外标法定量.结果表明,9种黄色合成色素在各自线性范围内相关系数(r2)均大于0.994;检出限(S/N>3)为0.01~0.30 mg/kg,定量限(S/N>10)为0.02~3.0 mg/kg,3个加标水平(1、2、10倍定量限)下,回收率为75.5%~115.1%,相对标准偏差(RSD)为4.7%~17.6%.该方法适用于酵母抽提物中9种黄色合成色素的同时测定.
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Key words
QuEChERS,Yellow synthetic pigment,Yeast extract,High performance liquid chromatography-tandem mass spectrometry
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