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For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
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在婴儿配方中烯胺的确定:一种新的提取方法

Sumeyra Sevim1,2, Rosalia Lopez-Ruiz2, Antonia Garrido-Frenich2

  • 1Department of Nutrition and Dietetics, Faculty of Health Sciences, Ankara Medipol University, 06500 Ankara, Türkiye.

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概括

烯胺 (AA) 是婴儿配方奶粉中的潜在污染物. 一种新的LC-MS方法准确地检测AA,揭示了配方类型之间的显著差异,并强调了持续安全监测的必要性.

关键词:
LC LC LC LC LC LC LC LC LC在MSMSMSMSMSMSMSMSMSMSMS中,我们可以看到烯胺的使用方法婴儿配方奶粉的使用方法牛奶 牛奶 牛奶 牛奶样品的准备 样品的准备

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科学领域:

  • 食品化学 食品化学
  • 分析化学 分析化学
  • 毒理学 毒理学 毒理学

背景情况:

  • 婴儿配方奶粉是母乳养的重要替代品,适用于无法完全母乳养的婴儿.
  • 在婴儿配方奶粉生产期间的热处理可能会导致烯胺 (AA) 的形成,这是一种潜在的致癌物质.
  • 现有的AA分析方法通常是复杂的,昂贵的和耗时的,限制了各种食物矩阵的常规分析.

研究的目的:

  • 开发和验证一种强大的液体染色体质谱法 (LC-MS) 方法,用于准确检测婴儿配方奶粉中的烯胺.
  • 评估各种商业可用的婴儿配方奶粉样本中的烯胺含量.
  • 调查不同类型婴儿配方奶粉中烯胺度的变化.

主要方法:

  • 建立了一个新的LC-MS协议,涉及连续的水分,乙酸沉和双吸附剂清理.
  • 方法验证包括线性,矩阵效应,灵敏度 (LOD/LOQ) 和恢复评估.
  • 在31个婴儿配方样本中量化了烯胺,包括牛奶制品,山羊奶制品,植物制品,氨基酸制品和谷物制品.

主要成果:

  • 经过验证的LC-MS方法显示出优异的线性 (R2>0.99),良好的灵敏度 (LOD:10μg/kg,LOQ:20μg/kg) 和一致的恢复率 (82-99%).
  • 在所有分析的婴儿配方奶粉中检测到烯胺,在基于氨基酸的配方奶粉中个体水平最高 (268.2μg/kg).
  • 平均AA度因配方类型而异,以谷物为基础的配方显示最高水平 (188.1 ± 100.8 μg/kg),其次是山羊奶为基础的,植物为基础的和牛奶为基础的配方 (p < 0.001).

结论:

  • 开发的LC-MS方法为婴儿配方奶粉中的烯胺分析提供了可靠和高效的工具.
  • 在不同类型的婴儿配方奶粉中,烯胺含量存在显著的变化,受成分和加工的影响.
  • 持续监测婴儿食品中的烯胺对于确保婴儿安全和通知监管标准至关重要.