[通过高性能液体染色学-蒸发光散射检测同时确定固体食品中的六种罕见糖]
Yu Liu1, Jia-Li Xing2, Jian Shen2
1College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China.
Se pu = Chinese journal of chromatography
|September 15, 2023
概括
一种新的HPLC-ECLD方法准确量化了固体食品中的六种罕见糖,解决了糖替代品的安全问题. 这种方法确保了准确的标签,并支持日常监测稀糖含量.
科学领域:
- 分析化学 分析化学
- 食品科学 食品科学 食品科学
- 食品安全 食品安全
背景情况:
- 过度摄入糖与代谢健康问题有关.
- 稀有糖越来越多地被用作糖替代品,这引发了食品安全方面的担忧,如改和错误标签.
- 目前还没有一种标准化的方法来同时确定固体食品中的多种罕见糖.
研究的目的:
- 开发和验证高性能液态染色学 (HPLC) 方法与蒸发光散射检测 (ECLD) 结合,用于同时确定固体食品中的六种罕见糖.
- 优化染色学和探测器条件,以便进行准确和敏感的分析.
- 提供一种可靠的质量控制方法和对食品中稀有糖的监管监测.
主要方法:
- 高性能液态染色学 (HPLC) 具有蒸发光散射检测 (ECLD).
- 使用Zorbax原始NH2柱与酸-水移动相和流速梯度化.
- 优化了ECLD参数,包括漂流管温度和雾化器载体气体流量.
- 样品的制备过程包括水性提取,用酸和铁化物净化,过.
主要成果:
- 开发的方法实现了所有六种罕见糖的尖,对称的峰值,分辨率>1.5 对于所有六种罕见糖 (糖,糖,三糖,异糖,红醇,曼尼醇).
- 使用外部标准方法进行量化显示出出色的线性 (R2 > 0.9985).
- 该方法表现出高灵敏度 (LOD 0.020-0.60 g/100 g),良好的精度 (RSD <5%),以及高平均恢复率 (92.6%-103.2%).
- 对实际食品样本的分析证实了该方法的适用性,并发现罕见糖含量的标签普遍一致.
结论:
- 已建立的HPLC-ECLD方法是简单的,快速的,灵敏的和可重复的,用于同时确定固体食品中的六种罕见糖.
- 该方法满足检测罕见糖的要求,并为制定中国食品分析方法标准提供技术支持.
- 这种分析方法对于日常监测固体食品中的稀糖水平至关重要,确保消费者安全和准确的产品标签.
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