Sugars in Cola Drink Using Accucore 150-Amide-HILIC

Importance of the Topic

Polar sugars like fructose and glucose are crucial to monitor in food and pharmaceutical products. Accurate quantification ensures quality control in beverages, syrups, and medicated formulations, addressing both regulatory requirements and consumer health concerns.

Objectives and Study Overview

This study demonstrates a robust chromatographic approach for the separation and detection of high concentrations of fructose, glucose, and cetylpyridinium in a cola drink matrix. The main goal is to achieve sharp peak shapes and minimize broadening caused by sugar isomerization.

Methodology and Instrumentation

• Column: Thermo Scientific Accucore Surfactant Plus, 150-Amide-HILIC, 2.6 µm, 3.0 × 150 mm
• Systems: Thermo Scientific Dionex ICS-3000 ion chromatography system and UltiMate 3000 LC system
• Mobile Phases: A – Acetonitrile; B – 100 mM formic acid (85:15 v/v) with 10 mM sodium perchlorate
• Gradient: 0–12 min gradient program, 1.0 mL/min flow rate; column temperature 50 °C; injection volume 5 µL of degassed sample
• Detection: Refractive index detector for neutral sugars; suppressed conductivity detection with Thermo Scientific Dionex CSRS 300 suppressor (2 mm, external water 1.0 mL/min, 8 mA)

Main Results and Discussion

The method achieved baseline separation of fructose, glucose, and cetylpyridinium within six minutes. Operating the column at elevated temperature accelerated interconversion of sugar isomers, reducing peak broadening. Refractive index detection accommodated high sugar levels, while suppressed conductivity provided interference-free analysis of ionic species.

Benefits and Practical Applications

• Fast, high-resolution analysis suited for routine quality control
• Minimal sample preparation (simple degassing)
• Dual detection modes enable simultaneous monitoring of neutral and charged analytes
• Applicable to food, beverage, and pharmaceutical testing laboratories

Future Trends and Applications

Advances in HILIC stationary phases with optimized surface chemistries may further enhance isomer separation. Integration with mass spectrometry will improve selectivity in complex matrices. Trends toward automation and miniaturization will broaden use in on-site and point-of-care testing.

Conclusion

The 150-Amide-HILIC method on Accucore Surfactant Plus offers efficient, reproducible separation and detection of sugars and quaternary ammonium compounds in a cola drink matrix. Its high throughput, simple sample preparation, and dual detection capability make it an effective tool for analytical laboratories focused on carbohydrate and ionic analysis.