Fat extraction from acid- and base-hydrolyzed food samples using accelerated solvent extraction.

Area of Science:

• Food Science
• Analytical Chemistry
• Biochemistry

Background:

• Accelerated Solvent Extraction (ASE) is valuable for lipid analysis but challenging with acid/base-hydrolyzed samples due to reagent corrosivity.
• Existing methods for lipid extraction from food samples can be labor-intensive and face limitations with certain sample preparations.

Purpose of the Study:

• To develop and validate a novel in-cell method for accelerated solvent extraction (ASE) prior to lipid analysis in food samples.
• To overcome the limitations of direct ASE with acid- or base-hydrolyzed samples.
• To provide an efficient and reliable alternative to traditional lipid extraction protocols.

Main Methods:

• Development of an in-cell technique utilizing ion exchange materials to neutralize acid/base reagents.
• Application of the new method for lipid extraction from various food matrices.
• Validation using NIST Standard Reference Materials (SRM-1546 and SRM-1849).
• Comparison of results with the established Mojonnier method.

Main Results:

• The in-cell method effectively removed acid/base reagents without compromising lipid recovery.
• Excellent fat recoveries were achieved across diverse food samples using the novel ASE approach.
• Performance data demonstrated the efficacy and reliability of the new lipid extraction technique.
• The method showed comparable or superior results to the Mojonnier method.

Conclusions:

• The developed in-cell ASE method enhances the utility of accelerated solvent extraction for lipid analysis in food.
• This innovative approach simplifies labor-intensive protocols and addresses reagent compatibility issues.
• The method offers a robust and efficient solution for accurate lipid determination in food products.