食品科学

• 安全检测 • 上一篇    下一篇

固相萃取-气相色谱-质谱联用法筛查食用菌中的农药残留

胡秋辉1,张昌娟1,郑惠华2,邱伟芬1,杨文建1,赵立艳3   

  1. 1.南京财经大学食品科学与工程学院,江苏省现代粮食流通与安全协同创新中心,
    江苏高校粮油质量安全控制及深加工重点实验室,江苏 南京 210023;2.江苏安惠生物科技有限公司,
    江苏 南通 226010;3.南京农业大学食品科学技术学院,江苏 南京 210095
  • 出版日期:2015-07-25 发布日期:2015-07-15
  • 基金资助:

    “十二五”国家科技支撑计划项目(2012BAD36B02);
    农产品中化学风险物高速分析检测系统的引进及其创新应用项目(农业部948项目)(2015-Z47)

Screening of Multi-Pesticide Residues in Edible Fungi by SPE and GC-MS

HU Qiuhui1, ZHANG Changjuan1, ZHENG Huihua2, QIU Weifen1, YANG Wenjian1, ZHAO Liyan3   

  1. 1. College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Key Laboratory of
    Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China;
    2. Jiangsu Alphay Bio-technology Co. Ltd., Nantong 226010, China;
    3. College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
  • Online:2015-07-25 Published:2015-07-15

摘要:

采用气相色谱-质谱联用结合NAGINATA™软件建立了筛查食用菌中多种农药残留的分析方法。采用乙腈提取,Carbon-NH2固相萃取小柱净化,气相色谱-质谱联用检测后NAGINATA™软件全智能分析,对照每个化合物的质谱质量精度以及质谱谱图的谱库给出匹配度,通过保留时间锁定对化合物作定性判断。结果表明,18 种农药在香菇中检出限为0.001~0.050 mg/kg;平均回收率为77%~110%;相对标准偏差为1.1%~6.9%。应用所建立的方法对35 个市售食用菌样品进行了筛查,检测出2 种农药残留,残留量均低于GB 2763—2014《食品中农药最大残留限量》的限量。该方法操作便捷、快速高效,适用于食用菌中农药多残留的快速筛查。

关键词: 食用菌, NAGINATA&trade, 软件, 固相萃取, 气相色谱-质谱联用, 农药残留

Abstract:

A gas chromatography-mass spectrometry (GC-MS) combined with NAGINATA™ software method was
developed for screening multi-pesticide residues in edible fungi. The pesticide residues in samples were extracted with
acetonitrile, cleaned up with Carbon-NH2 solid-phase extractor, detected by GC-MS, and finally analyzed by NAGINATA™
software. Based on the quality precision and retention time of each compound, the possible hazardous chemical compounds
were screened out by matching mass spectra with mass spectral library. Under the optimal conditions, the limits of detection
(LOD) of the established method were in the range of 0.001–0.050 mg/kg, and the average recovery rates for 18 pesticide
residues spiked in a blank sample were 77%–110% with relative standard deviations (RSDs) of 1.1%–6.9%. The method was
applied on 35 edible fungi purchased from local markets, and two pesticides were detected. which were below the maximum
residue limit (MRL) stipulated by the Chinese national standard GB 2763—2014. This method proved to be rapid, simple,
efficient and suitable for the fast screening of pesticide residues in edible fungi.

Key words: edible fungi, NAGINATA&trade, software, solid-phase extraction, gas chromatography-mass spectrometry (GC-MS), pesticide residues

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