在食品样本中对兽医药物的有针对性分析,通过开发一个高分辨率的并联质谱图书馆
Adeeba Khadim1, Syed Usama Yaseen Jeelani1, Muhammad Noman Khan1
1H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan.
Journal of agricultural and food chemistry
|August 2, 2023
概括
一个新的光谱库有助于快速检测食品中的158种兽药. 许多已识别的药物残留物超过了安全限值,造成健康风险,并需要更好的食品安全监测.
科学领域:
- 食品安全分析 食品安全分析
- 分析化学是一种分析化学.
- 质谱测量质量谱测量
背景情况:
- 食品中的兽药残留物对公众健康构成重大风险.
- 准确和快速的识别方法对于监测这些残留物至关重要.
- 现有的方法可能缺乏用于多类药物检测所需的全面范围.
研究的目的:
- 为16个类别的158种兽医药物开发一个高分辨率的质谱库.
- 建立一种使用LC-HR-ESI-MS/MS.的食品样本中的兽药快速识别方法.
- 通过分析真实食品样本和量化检测到的残留物来验证图书馆的实用性.
主要方法:
- 为158种兽医药物创建一个高分辨率的质谱图书馆.
- 使用了液体染色学-高分辨率电喷射电离-并联质谱法 (LC-HR-ESI-MS/MS).
- 根据Log P和确切质量对药物进行聚合;采集了使用[M + H]+,[M + Na]+和[M + NH4]+离子在各种碰撞能量的光谱.
主要成果:
- 在使用保留时间,HR-MS和MS / MS光谱的食品样本中成功识别了17种兽药.
- 使用LC-IT-MS.量化了五种特定的药物 (多西环素酸盐,林氏素,硫素,莫西素,二酸盐).
- 检测到的药物度在0.0805至0.9731毫克/公斤之间,经常超过粮农组织/世卫组织的最大残留物限值.
结论:
- 开发的光谱库允许在食品中对多类兽药进行高通量选.
- 确定的残留物水平表明需要加强食品安全监督和监管.
- 该研究为监管机构和食品安全实验室提供了宝贵的工具.
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