刘强欣 张虹 胡云强 闻佳钰 陈瑜 吴丹虹 何晓明



摘要 [目的]建立植物油中香兰素、甲基香兰素、乙基香兰素的高效液相色谱-串联质谱测定方法。[方法]以QuEChERS为基础,样品经乙腈-水(80∶20,V/V)提取,采用EMR-Lipid净化,以ACQUITY UPLC HSS T3色谱柱(2.1 mm×100 mm,1.8 μm)分离后,在电喷雾离子源的负离子模式下,多反应监测模式采集数据,外标法分量。[结果]在10~1 000 μg/L香兰素、甲基香兰素、乙基香兰素这3种化合物线性关系良好,相关系数(r)为0.993~0.998。[结论]该方法简单、准确、灵敏、快速,适用于植物油中3种香精的测定。
关键词 QuEChERS;香兰素;甲基香兰素;乙基香兰素;高效液相色谱-串联质谱法;植物油
中图分类号 TS207.3文献标识码 A
文章编号 0517-6611(2020)11-0198-04
Abstract [Objective]A liquid chromatographytandem mass spectrometric(LC-MS/MS)method was developed for the simultaneous determination of vanillin,methyl vanillin and ethyl vanillin in vegetable oils.[Method]The sample was extracted with acetonitrile-water(80∶20,V/V),cleared up by EMRLipid.The separation of target compounds were performed on an ACQUITY UPLC HSS T3 column(2.1 mm×100 mm,1.8 μm).Then the sample were ionized using Electrospray ionization (ESI),examined under multiple reaction monitoring(MRM) mode and quantified by the external standard method.[Result]The linear ranges of vanillin,methyl vanillin and ethyl vanillin were 10-1 000 μg/L,with correlation coefficients(r) of 0.993-0.998.[Conclusion]It is simply,accurate,sensitive and quick for the detection of three essnces in vegetable oils.
Key words QuEChERS;Vanillin;Methyl vanillin;Ethyl vanillin;High performance liquid chromatographytandem mass spectrometry;Vegetable oils
香蘭素、甲基香兰素和乙基香兰素是食品中常见的食用香料,其中香兰素是天然存在于咖啡、芦笋和香兰荚中,后两者是人工合成的化合物。它们是一种允许添加的食品添加剂,在糖果、饼干、糕点和饮料中被广泛应用。但有相关文献表明过量食入香精可导致头痛、恶心、呕吐、呼吸困难,甚至会损伤肝肾[1]。植物油是由不饱和脂肪酸和甘油化合而成的化合物,广泛分布于自然界中,是从植物的果实、种子、胚芽中得到的油脂(如菜籽油、大豆油和花生油等)。我国是植物油消费大国,植物油是一种生活必需品,人们每天通过各种形式摄入植物油,随着我国改革开放和国民经济的发展,人们生活水平日渐提升,食品产品安全意识逐步提高,并且依据GB 2760—2014《食品安全国家标准 食品添加剂使用标准》规定植物油脂是不得添加食用香料、香精,因此植物油中香兰素、甲基香兰素和乙基香兰素的检测就很有意义了。……