0617403 - ÚIACH 2026 RIV US eng J - Journal Article
Duša, Filip - Rusin, M. - Smolková, Denisa - Šesták, Jozef - Dobrowolska-Iwanek, J. - Woźniakiewicz, M. - Lavická, Jana
Adapting the laser-induced fluorescence detection setup of the standard capillary electrophoresis equipment to achieve high-sensitivity detection of 2-aminoacridone labeled oligosaccharides.
Journal of Separation Science. Roč. 48, č. 3 (2025), s. 1-6. ISSN 1615-9306. E-ISSN 1615-9314
R&D Projects: GA ČR(CZ) GA22-00236S; GA MŠMT(CZ) 9F23002; GA MŠMT(CZ) EH23_020/0008535
Institutional support: RVO:68081715
Keywords : laser-induced fluorescence * capillary electrophoresis * human milk oligosaccharides * 2-aminoacridone
OECD category: Analytical chemistry
Impact factor: 2.8, year: 2023 ; AIS: 0.381, rok: 2023
Method of publishing: Open access
Result website:
https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/epdf/10.1002/jssc.70112

DOI: https://doi.org/10.1002/jssc.70112

The high-sensitivity capabilities of laser-induced fluorescence (LIF) detection continuously promote the development of various labels with different fluorescence properties. However, this strategy also requires the adaptation of existing detection systems to suit the excitation and emission characteristics of novel fluorescent tags. In this study, we adapted the LIF detector of the commercial capillary electrophoresis instrument to the specific fluorescence spectra of 2-aminoacridone labeled human milk oligosaccharides. An external solid-state laser with a wavelength of 405 nm was connected to the commercial capillary electrophoresis instrument via a simple 3D-printed laser-to-light-guide adapter, and different optical filter setups were compared based on the signal-to-noise ratio. The optimized setup provided detection limits as low as 0.27 to 0.34 nM, corresponding to injection of 3.4 to 4.6 attomoles of 2-aminoacridone labeled oligosaccharides. These findings show that the optimized laser and filter configuration can enhance the sensitivity of electrophoretic separation by several orders of magnitude. In addition, the presented setup can be utilized as a guide for coupling different lasers to the commercial instrument.
Permanent Link: https://hdl.handle.net/11104/0364336
 
Scientific data in ASEP :
DATASET for "Adapting the LIF detection setup of the standard CE equipment to achieve high-sensitivity detection of 2-aminoacridone-labeled oligosaccharides"