Online Extraction-Fractionation of Functional Ingredients from Foods using SFE-SFC System Coupled with A Fraction Collector

Significance of the Topic

Lycopene is a carotenoid known for its antioxidant activity and potential in preventing lifestyle related diseases. Efficient extraction and fractionation of such sensitive compounds from complex food matrices is critical for both research and quality control.

Objectives and Study Overview

This work aims to develop a fully automated method for extracting, purifying and fractionating lycopene from processed tomato products. The focus is on optimizing supercritical fluid chromatography conditions and coupling online supercritical fluid extraction with a fraction collector to streamline the entire sample preparation process.

Methodology and Instrumentation

The approach utilizes static and dynamic extraction with supercritical CO2 directly connected to an SFC system. Six stationary phases were screened for lycopene and beta carotene separation. The optimal conditions used an ODS column with acetonitrile modifier. Instrumentation included a Shimadzu Nexera UC platform with an SFE unit, fraction collector and LotusStream gas-liquid separator. Detection was carried out by diode array detection and confirmation by LCMS.

Key Results and Discussion

• Column scouting identified ODS with acetonitrile as the best combination, improving resolution and reducing analysis time.
• Automated online workflow reduced manual pretreatment from one hour to five minutes.
• Preparative fractionation achieved high purity lycopene free from beta carotene interference.
• Recovery of lycopene was 78 percent relative to standard, demonstrating efficient isolation with minimal degradation.

Benefits and Practical Applications

• Seamless automation reduces hands on time and exposure to light heat or oxygen.
• High throughput capability supports routine analysis in food quality laboratories and research departments.
• Pure fractions enable preparation of in house standards when commercial references are unavailable.

Future Trends and Opportunities

• Extension of online SFE SFC workflows to other bioactive compounds and diverse sample types.
• Integration with real time mass spectrometry for structural characterization during fractionation.
• Scale up of preparative processes for industrial level purification of functional ingredients.
• Development of eco friendly modifiers and CO2 recycling to enhance sustainability.

Conclusion

The integration of online supercritical fluid extraction and chromatography with fraction collection enables rapid, automated isolation of lycopene from processed tomatoes. This method significantly cuts sample preparation time while delivering high purity fractions, offering valuable gains in efficiency for food and nutraceutical analysis.