超高效液相色谱法同时测定饮料中的17种食品添加剂
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刘泰然,女主管检验师,研究方向为食品安全 E-mail:ltr724@yahoo.com.cn

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Simultaneous determination of 17food additives in drinks by ultra high performance liquid chromatography
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    摘要:

    建立超高效液相色谱法(UPLC)同时测定饮料中安赛蜜、柠檬黄、苯甲酸、新红、苋菜红、糖精钠、靛蓝、山梨酸、胭脂红、日落黄、诱惑红、阿斯巴甜、酸性红、亮蓝、喹啉黄、赤藓红、专利蓝ⅴ共17种食品添加剂的方法。方法样品经乙腈除去蛋白、用水稀释,采用迪马Endeavorsil TM C18反相色谱柱(1.8μm×2.1mm×100mm)分离,以乙腈-乙酸铵(20mmol/L,pH 5.8~6.0)为流动相进行梯度洗脱,在30℃柱温、0.3ml/min流速下,采用二极管阵列检测器多波长分析,外标法定量。结果在10min内可以实现17种食品添加剂的完全分离;在0.025~25.0mg/L范围具有良好的线性关系,回归系数均大于0.998, 检出限为0.00070~0.0074mg/L;定量限为0.0024~0.0430 mg/L;标准加入的平均回收率为86.4%~ 104.8%,相对标准偏差值为0.25%~9.6%。结论该方法简便、快速、分离效果好、灵敏度高,适用于饮料中17种添加剂的检测需求。

    Abstract:

    A simple, rapid method was developed for the simultaneous determination of 17food additives in drinks by ultra high performance liquid chromatography ( UPLC). MethodsAfter protein precipitation, the sample was diluted by water, separated on a Endeavorsil TM C18 column (1.8μm×2.1mm×100mm) with ammonium acetate (0.02mol/L) / acetonitrile as the gradient eluent with a flow rate of 0.3ml/min at 30℃. Components were detected with a diode array detector at 215,0and 254nm, respectively. The quantification was performed by the external standard method. ResultsThe method showed good linearity for 17food additives with correlation coefficients (r) above 0.998. All target food additives could be separated within 10min. The UPLC method exhibited excellent linearity over the range of 0.025-25.0mg/L. The detection limit ranged from 0.00070to 0.0074mg /L. The limits of quantification was 0.0024 to 0.043mg/L. The average recoveries for 17food additives from spiked drinks were in the range of 86.4%-104.8% with relative standard deviations (RSDs) of 0.25%-9.6%. ConclusionThe analytical method is simple, accurate, sensitive and suitable for the determination of 17additives in drinks.

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刘泰然,赵海燕,罗仁才.超高效液相色谱法同时测定饮料中的17种食品添加剂[J].中国食品卫生杂志,2013,25(1):44-48.

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  • 收稿日期:2012-10-29
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