Label-free aptamer-based partial filling technique for enantioseparation and determination of DL-tryptophan with micellar electrokinetic chromatography.

作者: Rong Huang , Wenming Xiong , Daifang Wang , Longhua Guo , Zhenyu Lin

DOI: 10.1002/ELPS.201200464

关键词:

摘要: In this study, a simple and reproducible method for enantioseparation determination of dl-tryptophan (DL-Trp) was developed by using partial filling technique in combination with MEKC. The corresponding L-Trp specific DNA aptamer used as chiral selector. Sodium cholate to form the micelles enhance enantiomers. Effects concentration, time, buffer composition, separation voltage on were evaluated. Mg(2+) Na(+) concentration found effectively affect efficiency reproducibility. Under optimal conditions, D- completely enantioseparated less than 9 min. This aptamer-based partial-filling approach has potential be extended other enantiomers after replacement aptamers.

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