优化了从微生物来源中分离阿斯塔山丁立体异构体,使用奇拉HPLC进行分离
Xuehua Han1, Xin Wang1, Yanhong Chen1,2,3,4
1College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, P. R. China. xipingdu@jmu.edu.cn.
Analytical methods : advancing methods and applications
|December 10, 2024
概括
一种新的半准备性HPLC方法可以有效地分离阿斯丁 (AST) 立体异构体. 这种方法实现了天然来源的全跨AST的高纯度,使大规模制备成为可能.
科学领域:
- 分析化学 分析化学
- 自然产品化学 自然产品化学
- 染色体学 染色体学 是一种染色学.
背景情况:
- 素 (AST) 是一种有价值的抗氧化剂,具有多种不同的立体异构体,对隔离和利用提出了挑战.
- 有效地分离AST立体异构体对于其在各种行业中的应用至关重要.
- 对于复杂的立体同位素混合物,现有的方法往往在纯度和可扩展性方面扎.
研究的目的:
- 开发一种半准备性高性能液体染色学 (HPLC) 方法,以高效地分离阿斯塔山丁立体异构体.
- 为了从不同的自然来源获得高纯度的全跨阿斯塔丁.
- 为大规模制备阿斯塔克桑立体异构体提供基础.
主要方法:
- 开发一种半准备性HPLC方法,使用Chiralpak IC手术柱.
- 优化移动相组合 (甲醇-甲基三-丁乙烯,90:10v/v) 和流量 (3.06mL/min).
- 使用质谱学分析立体同位素纯度,分子量和碎片化模式.
主要成果:
- 实现了全转型阿斯塔丁的高纯度:97.9%来自*血球球菌Pluvialis*和97.5%来自*Phaffia rhodozyma*.
- 证明了该方法的优异线性 (R2 > 0.999) 和可重复性 (RSD < 3.8%).
- 成功分离了三种全跨AST光学异构体,证实了该方法的有效性.
结论:
- 开发的半准备性HPLC方法提供了高负载能力和奇拉识别的阿斯塔山丁立体同位素的高效分离.
- 该方法提供了一种可靠和可扩展的方法,用于从自然来源获得高纯度的全跨阿斯丁.
- 这项研究为工业规模生产和应用特定的阿斯塔山丁立体同位素奠定了基础.
相关概念视频
Optimizing Chromatographic Separations
342
Optimizing chromatographic separations is crucial for obtaining clean separations in a minimum amount of time. Optimization is required for several factors, including kinetic effects related to band broadening, plate height, capacity factor, and separation factor.
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
342
Racemic Mixtures and the Resolution of Enantiomers
18.1K
A racemic mixture, or racemate, is an equimolar mixture of enantiomers of a molecule that can be separated using their unique interaction with chiral molecules or media. Racemic mixtures are denoted by the (±)- prefix. This ‘optical rotation descriptor’ applies to the whole solution of a racemic mixture rather than a specific stereoisomer. Enantiomers typically have the same physical and chemical properties. Hence, they are not easily separable. However, enantiomers can exhibit...
18.1K
High-Performance Liquid Chromatography: Introduction
1.5K
High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
In HPLC, two phases play a critical role in the separation process:
1.5K
Principles Of Column Chromatography
6.7K
The chromatography technique was first invented in 1901 by Michael S. Tswett, a Russian botanist, to separate plant pigments using organic solvents. Further, in 1941, Archer John Porter Martin and R. L. M. Synge modified the technique by packing silica gel into a column. A mixture of amino acids was then separated on the packed column using chloroform and water mixture as the mobile phase. This was the first report on column chromatography. At present, column chromatography is a widely used...
6.7K
Size-Exclusion Chromatography
499
In size-exclusion chromatography (SEC), also known as molecular-exclusion or gel-permeation chromatography, molecules are separated based on their sizes. This technique is important for separating large molecules such as polymers and biomolecules. The two classes of micron-sized stationary phases encountered in SEC are silica particles and cross-linked polymer resin beads. Both materials are porous, but their pore sizes vary significantly.
Silica particles offer advantages such as rigidity,...
Silica particles offer advantages such as rigidity,...
499
High-Performance Liquid Chromatography: Elution Process
424
In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
424


