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Reliable determination of tropane alkaloids in cereal based baby foods coupling on-line spe to mass spectrometry avoiding chromatographic step
Food Chemistry ( IF 8.5 ) Pub Date : 2018-09-24 , DOI: 10.1016/j.foodchem.2018.09.137
Jesús Marín-Sáez , Roberto Romero-González , Antonia Garrido Frenich

Cereal based foods are a major part of the infant diet and they can be contaminated with Solanaceae and other plants containing tropane alkaloids. This study was focused on the optimisation of an extraction procedure based on a solid-liquid method and an online SPE system, directly coupled to different mass spectrometry analysers as Orbitrap and triple quadrupole (QqQ), removing the chromatographic separation step. Total running analysis time was 15.8 min (17.3 min in the QqQ system). The developed method was validated obtaining recoveries ranging from 66 to 98% and 68–97% for the Orbitrap and QqQ respectively (RSD lower than 14.3%) and limits of quantification from 0.5 to 5 µg kg-1 and 0.5–10 µg kg-1 for the QqQ and Orbitrap analyser respectively. The validated method was applied to several cereal based baby food samples, finding a positive sample containing atropine (11.5 µg kg-1), scopolamine (2.8 µg kg-1) and apoatropine (7.5 µg kg-1).



中文翻译:

可靠的测定谷物基婴儿食品中的托烷生物碱,同时采用在线spe与质谱联用,避免了色谱步骤

谷类食品是婴儿饮食的主要组成部分,它们可能被茄科和其他含有托烷生物碱的植物所污染。这项研究的重点是基于固液法和在线SPE系统的萃取程序的优化,该方法直接与不同的质谱分析仪(如Orbitrap和三重四极杆(QqQ))耦合,省去了色谱分离步骤。总运行分析时间为15.8分钟(在QqQ系统中为17.3分钟)。所提出的方法进行了验证获得回收率为66到分别用于轨道阱和QQQ 98%和68-97%(RSD小于14.3%)和定量限为0.5〜5微克千克-1和0.5-10微克公斤- 1个分别用于QqQ和Orbitrap分析仪。经验证的方法应用于几种谷物类婴儿食品样品,发现阳性样品中含有阿托品(11.5 µg kg -1),东(碱(2.8 µg kg -1)和阿托品碱(7.5 µg kg -1)。

更新日期:2018-09-24
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