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Updated: Jun 12, 2026
11:27
A Package of Established Analytical Tools to Investigate the Solid-State Alteration of Lipid-Based Excipients
Published on: August 9, 2022
Detailed analysis of ACETEM emulsifiers and emulsifier products
Katharina Schuster1, Tanja Wernlein1, Tong Wang1
1Department of Food Chemistry and Analytical Chemistry (170a), Institute of Food Chemistry, University of Hohenheim, Garbenstrasse 28, 70599 Stuttgart, Germany.
Journal of Chromatography. A
|June 10, 2026
Summary
Analyzing acetic acid esters of mono- and diacylglycerols (ACETEM) emulsifiers is challenging due to their similarity to fats. This study developed new analytical methods for ACETEM characterization and semi-quantitative determination in food products.
Area of Science:
- Food Chemistry
- Analytical Chemistry
- Lipid Science
Background:
- Acetic acid esters of mono- and diacylglycerols (ACETEM) are emulsifiers structurally similar to fats.
- Analysis of ACETEM is difficult in fat-containing food matrices due to structural similarities.
- Limited methods exist for qualitative and quantitative ACETEM analysis.
Purpose of the Study:
- To characterize an ACETEM emulsifier and a product containing ACETEM.
- To develop a method for semi-quantitative determination of specific ACETEM compounds.
- To assess the variability of ACETEM composition in commercial emulsifiers.
Main Methods:
- High-performance thin-layer chromatography-fluorescence detection (HPTLC-FLD)
- Thin-layer chromatography coupled to mass spectrometry (TLC-MS)
- High-performance liquid chromatography coupled to MS (HPLC-MS)
- Direct infusion electrospray ionization tandem MS (DI-ESI-MS/MS)
- Nuclear magnetic resonance spectroscopy (NMR)
- Synthesis of four analytical standards for HPLC-MS/MS
Main Results:
- Multiple analytical techniques were employed for ACETEM characterization.
- A semi-quantitative HPLC-MS/MS method was developed and validated.
- Analyzed ACETEM emulsifiers contained 16-97% of specific acetylated glycerol compounds.
- Significant variation in the proportion of mono- and diacetylated species was observed.
Conclusions:
- The study successfully characterized ACETEM emulsifiers using advanced analytical techniques.
- The developed HPLC-MS/MS method enables semi-quantitative determination of key ACETEM compounds.
- Findings highlight the compositional variability of ACETEM emulsifiers, impacting their application and analysis.
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