Analysis of Saccharides

Analysis of Saccharides by SEC/Ligand Exchange Chromatography Using Shim-pack SCR-101C

Significance of the topic

Accurate separation and quantification of carbohydrates and related polyols are essential in food science, biotechnology and pharmaceutical quality control. Saccharides such as glucose, fructose and maltose influence product stability, bioactivity and nutritional value. Implementing reliable chromatographic techniques supports regulatory compliance and optimizes process monitoring.

Objectives and Study Overview

This study aims to demonstrate the performance of a size-exclusion chromatography (SEC) method combined with ligand exchange on a specialized column to resolve mono-, di- and higher saccharides, along with small polyols. Key goals include achieving clear baseline separation using water as the sole mobile phase and evaluating the method’s applicability to diverse sugar samples.

Methodology and Instrumentation Used

The analytical setup employs a Shim-pack SCR-101C column with the following parameters:

• Column dimensions: 300 mm × 7.9 mm I.D., particle size 10 µm
• Mobile phase: ultrapure water
• Flow rate: 1.0 mL/min
• Column temperature: 80 °C
• Detector: Refractive Index Detector (RID)

This straightforward configuration allows for high‐temperature elution without buffers, minimizing background noise and maintenance requirements.

Main Results and Discussion

Under the described conditions, polyethylene glycol (PEG 4000), maltose, glucose, fructose, glycerol, ethanol and sorbitol were injected and eluted with distinct retention times. The ligand‐exchange mechanism at elevated temperature selectively interacts with hydroxyl groups, enabling sharp peak shapes and baseline resolution. Monosaccharides (glucose, fructose) were distinguished from disaccharides (maltose) and small polyols. PEG 4000 served to demonstrate the upper exclusion limit of the column.

Benefits and Practical Applications

• Use of pure water simplifies mobile phase preparation and reduces waste disposal concerns.
• High‐temperature operation enhances resolution without the need for salt additives.
• Robust and reproducible separation supports routine quality control in food and pharmaceutical laboratories.
• Applicable to a broad range of carbohydrates, polyols and related impurities.

Future Trends and Potential Applications

Advancements may include coupling SEC/ligand exchange with mass spectrometry for structural identification, development of higher‐throughput columns for process analytics, and integration with automated sampling in bioreactors. Novel stationary phases with tailored ligand chemistries could further improve selectivity for specific sugar isomers.

Conclusion

The Shim-pack SCR-101C column combined with SEC/ligand exchange and RID detection delivers reliable, high‐resolution separation of saccharides and polyols using water as the mobile phase. The method’s simplicity, robustness and wide applicability make it a valuable tool for analytical laboratories focused on carbohydrate profiling and quality assurance.