胡麻油中3-氯丙醇酯的GC-NCl-MS测定  

Determination of 3-MCPD Ester in Flaxseed Oils by GC-NCI-MS

作　　者：王永瑞[1,2] 王丹 徐宇丽 魏长庆 WANG Yongrui1,2, WANG Dan3, XU Yuli3, WEI Changqing1,2(1. Food College, Shihezi University,Shihezi 832000;2. Key Laboratory of Xinjiang Plant Medicine Resource Utilization,Shihezi 832000; 3. Shihezi Entry-exit Inspection and Quarantine Bureau,Shihezi 83200)

机构地区：[1]石河子大学食品学院,石河子832000 [2]新疆植物药资源利用教育部重点实验室,石河子832000 [3]石河子出入境检验检疫局,石河子832000

出　　处：《食品工业》2018年第10期300-303,共4页The Food Industry

基　　金：国家自然科学基金青年科学基金项目(31401617);国家自然科学基金地区科学基金项目(31360389;31760434);中国博士后科学基金第59批面上资助项目(168667);石河子大学高层次人才项目(RCZX201524)

摘　　要：采用气相色谱-负化学离子源-质谱(GC-NCI-MS)联用技术,建立了测定食用植物油中3-氯丙醇酯(3-MCPD酯)含量的分析方法。该方法在0.01～0.10 mg/kg范围内线性关系良好(r2=0.997 4),检出限为5μg/kg,定量限为20μg/kg。加标回收率在80.47%～81.68%之间,相对标准偏差在5.60%～8.35%之间。对市售胡麻油中3-MCPD酯进行检测,结果表明:石河子市售的三种胡麻油中3-MCPD酯的含量在0.307 7～1.205 9 mg/kg之间。相对其他文献报道过的油脂,胡麻油中3-MCPD含量处于一个相对中等水平。Gas chromatography-negative chemical ionization-mass spectrometry （GC-NCI-MS） was used in order to establish a method for the content determination of 3-Monochloro-1, 2-propanediol ester （3-MCPDE） in vegetable oils. The method showed good linear relationship in the range of 0.01-0.10 mg/kg （r2=0.997 4）. The detection limit and quantification limit were 5 μg/kg and 20 μg/kg, respectively. The recovery rate was between 80.47% and 81.68%, and the relative standard deviation was between 5.60% and 8.35%. The content of 3-Monochloro- 1, 2-propanediol ester （3-MCPDE） in flaxseed oil was detected, and the results showed that the content of 3-MCPD ester in three flaxseed oils was between 0.307 7 and 1.205 9 mg/ kg. Compared with other oils, the content of 3-MCPD ester was at a moderate level.

关 键 词：气相色谱-负化学离子源-质谱联用技术 胡麻油 3-氯丙醇酯 

分 类 号：TS227[轻工技术与工程—粮食、油脂及植物蛋白工程]