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通过SPP-teicoplanin和另一种紫外线检测方法,快速,灵敏的LC-MS解析酸生物标志物

Saba Aslani¹, Daniel W Armstrong²

¹Department of Chemistry and Biochemistry, University of Texas at Arlington, 700 Planetarium Place, Arlington, TX, 76019, USA.

Analytical and bioanalytical chemistry

|April 2, 2024

概括

使用HPLC对alpha-hydroxy酸的分离对疾病诊断和食品质量至关重要. 这项研究优化了使用teicoplanin chiral静止阶段的方法,提高了检测灵敏度和enantioresolution.

科学领域:

分析化学分析化学
螺旋式分离螺旋式分离
生物标记分析生物标记分析

背景情况:

阿尔法氧酸是癌症和糖尿病等疾病的重要生物标志物.
准确的enantioseparation对于可靠的诊断和食品工业的质量控制至关重要.

研究的目的:

开发和优化高性能液体染色学 (HPLC) 方法,用于11个α-酸的酶选择性分离.
为了评估基于表面多孔颗粒的提科普拉宁 (TeicoShell) 奇拉静止相的性能.

主要方法:

利用HPLC与TeicoShell奇拉静止阶段进行enantioseparation.
研究了保留行为,包括水友互动液体染色学 (HILIC),逆相和离子排除.
采用液态染色学-质谱学 (LC-MS) 和紫外线光谱检测,优化移动相 (氨酸盐,二酸盐).

主要成果:

与紫外线检测相比,LC-MS显示了显著更高的灵敏度 (两次数).
移动相酸度和离子强度对反溶解和反选择性产生了关键影响,而更高的离子强度提高了保留和分辨率.
在含有甲酸盐的移动相中,乙二一般比甲醇提高了对抗溶解的效果,尽管甲醇在高盐度下减轻了长时间的保留时间.
量子反体纯度分析显示,大多数单量子反体标准中都存在杂质.

结论:

开发的HPLC方法有效地使用teicoplanin合静止阶段分离α-基酸反体.
优化移动相条件,特别是离子强度,是实现高反解和选择性的关键.
LC-MS为检测这些生物标志物提供了更高的灵敏度,标准的纯度评估对于准确的分析至关重要.

关键词:

疾病生物标志物疾病生物标志物异构体异构体异构体异构体异构体异构体具有反选择性 (enantioselectivity) 的一个特性.氧酸是一种氧酸.质谱测量质量谱测量泰科贝 (TeicoShell) 是一种贝.

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