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Validation of a rapid ultra-high-performance liquid chromatography-tandem mass spectrometry method for quantification of chlorogenic acids in roasted coffee.
Journal of Mass Spectrometry ( IF 2.3 ) Pub Date : 2020-07-28 , DOI: 10.1002/jms.4634
Silvia Colomban 1 , Elena Guercia 1 , Luciano Navarini 2
Affiliation  

Chlorogenic acids (CGAs) are a large class of esters formed between quinic acid and hydroxycinnamic acids. They are present in coffee as a complex mixture of positional and geometric isomers, where caffeoylquinic acids (CQAs) are the most abundant, followed by dicaffeoylquinic acids (diCQAs), feruloylquinic acids (FQAs), and p‐coumaroylquinic acids (p‐CoQAs). The aim of this work is to develop a new reliable and fast liquid chromatography–tandem mass spectrometry (LC–MS/MS) method for simultaneous identification and quantification of total amount of 11 CGAs in roasted coffee. Regarding sample preparation step, aqueous methanol and 100% aqueous ultrasonic extractions were evaluated. For the filtration Step 4, different membranes were tested, in order to fill the void of complete evaluation of extractables recovery when using different membranes, highlighting an incomplete recovery when using nylon filters. An LC/electrospray ionization (ESI)–MS/MS method was developed and validated following the European rules in terms of specificity, linearity, concentration range, limit of detection (LOD) and limit of quantification (LOQ), precision, and trueness, in order to obtain a useful quality control tool for roasted coffee. The method was applied for quantification of CGAs of a roasted coffee sample previously characterized by an interlaboratory circuit (LVU), and results were compared with the quantitation of CGAs via UHPLC‐DAD. The quantitative results were expressed as 5‐CQA equivalents, and the validation of this approach opens the way to reliable, cheap, and environmental‐friendly tools for quality control purposes.

中文翻译:

快速超高效液相色谱-串联质谱法用于定量烘焙咖啡中绿原酸的验证。

绿原酸(CGA)是奎尼酸和羟基肉桂酸之间形成的一大类酯。它们以位置异构体和几何异构体的复杂混合物形式存在于咖啡中,其中咖啡酰奎尼酸(CQAs)最丰富,其次是二咖啡酰奎尼酸(diCQAs),阿魏酰基奎尼酸(FQAs)和对-香豆酰奎尼酸(p-CoQAs) 。这项工作的目的是开发一种新的可靠,快速的液相色谱-串联质谱法(LC-MS / MS),用于同时鉴定和定量烘焙咖啡中11种CGA的总量。关于样品制备步骤,评估了甲醇水溶液和100%超声水溶液的提取。对于过滤步骤4,测试了不同的膜,以填补使用不同膜时完全评估可萃取物回收率的空白,突出显示使用尼龙过滤器时恢复不完全。LC /电喷雾电离(ESI)–MS / MS方法是根据欧洲关于特异性,线性,浓度范围,检测限(LOD)和定量限(LOQ),精确度和真实性的规则进行开发和验证的,为了获得有用的烘焙咖啡质量控制工具。该方法用于量化以前由实验室间电路(LVU)表征的烘焙咖啡样品的CGA,并将结果与​​通过UHPLC-DAD进行的CGA定量进行比较。定量结果以5 CQA当量表示,这种方法的验证为质量控制目的的可靠,廉价和环保工具开辟了道路。LC /电喷雾电离(ESI)–MS / MS方法是根据欧洲关于特异性,线性,浓度范围,检测限(LOD)和定量限(LOQ),精确度和真实性的规则进行开发和验证的,为了获得有用的烘焙咖啡质量控制工具。该方法用于量化以前由实验室间电路(LVU)表征的烘焙咖啡样品的CGA,并将结果与​​通过UHPLC-DAD进行的CGA定量进行比较。定量结果以5 CQA当量表示,这种方法的验证为质量控制目的的可靠,廉价和环保工具开辟了道路。LC /电喷雾电离(ESI)–MS / MS方法是根据欧洲关于特异性,线性,浓度范围,检测限(LOD)和定量限(LOQ),精确度和真实性的规则进行开发和验证的,为了获得有用的烘焙咖啡质量控制工具。该方法用于量化以前由实验室间电路(LVU)表征的烘焙咖啡样品的CGA,并将结果与​​通过UHPLC-DAD进行的CGA定量进行比较。定量结果以5 CQA当量表示,这种方法的验证为质量控制目的的可靠,廉价和环保工具开辟了道路。浓度范围,检测极限(LOD)和定量极限(LOQ),精度和真实性,以便获得有用的烘焙咖啡质量控制工具。该方法用于量化以前由实验室间电路(LVU)表征的烘焙咖啡样品的CGA,并将结果与​​通过UHPLC-DAD进行的CGA定量进行比较。定量结果以5 CQA当量表示,这种方法的验证为质量控制目的的可靠,廉价和环保工具开辟了道路。浓度范围,检测极限(LOD)和定量极限(LOQ),精度和真实性,以便获得有用的烘焙咖啡质量控制工具。该方法用于量化以前由实验室间电路(LVU)表征的烘焙咖啡样品的CGA,并将结果与​​通过UHPLC-DAD进行的CGA定量进行比较。定量结果以5 CQA当量表示,这种方法的验证为质量控制目的的可靠,廉价和环保工具开辟了道路。该方法用于量化以前由实验室间电路(LVU)表征的烘焙咖啡样品的CGA,并将结果与​​通过UHPLC-DAD进行的CGA定量进行比较。定量结果以5-CQA当量表示,这种方法的验证为质量控制目的的可靠,廉价和环保工具开辟了道路。该方法用于量化以前由实验室间电路(LVU)表征的烘焙咖啡样品的CGA,并将结果与​​通过UHPLC-DAD进行的CGA定量进行比较。定量结果以5 CQA当量表示,这种方法的验证为质量控制目的的可靠,廉价和环保工具开辟了道路。
更新日期:2020-08-10
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