Omega Fatty Acids in Chicken Fat Using a Thermo Scientific™ Acclaim™ C30 Column

Significance of the Topic

Omega-3 fatty acids are essential unsaturated lipids with proven benefits in human health, including cardiovascular and neurological function. Precise measurement of these compounds in food matrices such as chicken fat is critical for nutritional analysis, quality control, and research into dietary lipid profiles.

Objectives and Overview of the Study

This work demonstrates a robust liquid chromatography method using a Thermo Scientific Acclaim C30 column to separate, identify, and quantify a range of omega fatty acids in saponified chicken fat samples and standards. The aim is to achieve high resolution of structurally similar fatty acids for accurate analysis.

Methodology and Instrumentation

Samples consisted of mixed omega-fatty acid standards dissolved in isopropanol and saponified chicken fat extracts.

• Chromatographic column: Thermo Scientific Acclaim C30, 5 µm, 4.6 × 150 mm
• LC system: Thermo Scientific Dionex UltiMate 3000 RS with Dual Gradient capability
• Mobile phases:
    A: water : formic acid : mobile phase B = 900 : 3.6 : 100 (v/v)
    B: acetone : acetonitrile : THF : formic acid = 675 : 225 : 100 : 4 (v/v)
• Gradient program: initial 100 % A to 5 % A over 22 min, held, then re-equilibrated to 100 % A by 32 min
• Flow rate: 1.00 mL/min; column temperature: 30 °C; injection volume: 2 µL
• Detector: Thermo Scientific Dionex Corona ultra Charged Aerosol Detector, nebulizer at 15 °C, high filter setting

Instrumentation Used

All separations were performed on a Thermo Scientific Dionex UltiMate 3000 RS LC system equipped with a dual-gradient pump and Corona ultra charge aerosol detector coupled to an Acclaim C30 reversed-phase column.

Main Results and Discussion

The method provided baseline resolution of fourteen fatty acids, including α-linolenic acid, eicosapentaenoic acid, docosahexaenoic acid, and related isomers.

• Excellent peak shape and separation for cis- and trans-configured unsaturated fatty acids
• Reproducible retention times with relative standard deviations below 1 %
• Clear distinction between omega-3, omega-6, and other long-chain fatty acids in complex chicken fat matrix

Benefits and Practical Applications

This analytical approach offers:

• High specificity for nutritional and regulatory laboratories quantifying dietary lipids
• Reliable analysis of closely related fatty acid isomers without derivatization
• Compatibility with quality-control workflows in the food and feed industries

Future Trends and Applications

Advances may include coupling charged aerosol detection with mass spectrometry for enhanced sensitivity and structural confirmation. Emerging stationary phases and ultra-high-performance LC systems could reduce analysis times further. The method can be extended to other food matrices, nutritional supplements, and lipidomics research.

Conclusion

The Thermo Scientific Acclaim C30 column method provides a reliable, high-resolution solution for quantifying a broad spectrum of omega fatty acids in chicken fat. Its robustness and flexibility make it valuable for both routine analysis and research applications.