超高效/低压超临界流体色谱 (UHE/LP-SFC) 用于甘油三分析:植物油的鉴定,定量和分类
Eric Lesellier1, Anna Latos1, Caroline West1
1Institut de Chimie Organique et Analytique (ICOA) Université d'Orléans CNRS UMR 7311 Orléans cedex 2 France.
Analytical science advances
|May 8, 2024
概括
超临界流体色谱简化了使用蒸发光散射检测或紫外线检测在植物油中的甘油三量化. 这种方法可以轻松评估和比较19种不同油的相对度.
科学领域:
- 分析化学 分析化学
- 食品化学 食品化学
- 染色体学 染色体学 是一种染色学.
背景情况:
- 分析植物油甘油三糖的传统方法包括非水性逆相液态染色学和银离子染色学.
- 以前的研究表明,超临界流体染色学 (SFC) 使用长列和芯颗粒进行超高性能分离的有效性.
- 通过使用二氧化碳作为移动相,SFC为传统液态染色学方法提供了低毒性的替代方案.
研究的目的:
- 描述使用超临界流体色谱 (SFC) 与蒸发光散射检测 (ELSD) 结合的植物油中甘油三的量化.
- 提出一种简化的同位素化方法来量化甘油三,只需要一个校准曲线.
- 使用SFC-ELSD和SFC-UV检测,比较19种植物油的甘油三形状,以方便油的表征和潜在的替代.
主要方法:
- 超临界流体色谱 (SFC) 与同位素化被用于三糖分离.
- 使用蒸发光散射检测 (ELSD) 和210nm的紫外线检测进行了量化.
- 甘油三的鉴定利用了先前的油脂知识和Goiffon保留图,将保留因子与双键数相关联. 集群分析用于石油比较.
主要成果:
- 通过SFC-ELSD实现了对甘油三的简化相对量化,需要单个校准曲线 (triolein).
- 获得的相对度与现有文献数据一致.
- SFC-UV检测提供了一个替代的量化方法,根据双键含量计算紫外线反应的变化. 集群分析有效地区分了十九种植物油的甘油三形状.
结论:
- 超临界流体色谱为植物油中甘油三的相对定量提供了一种简单而有效的方法.
- 无论是ELSD还是紫外线检测都适合进行甘油三分析,而紫外线检测需要对双键变异进行校准.
- 开发的SFC方法可以有效地比较和描述植物油的甘油三化合物成分,有助于特定应用的选择和质量控制.
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