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Published on: February 16, 2024
Spectroscopic Decoding of Ethanol-Water Clusters in Alcoholic Beverages
Cheng-Feng Zhang1,2, Yi Li3, Yuqing Wu1,2
1State Key Laboratory for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, China.
Applied Spectroscopy
|June 4, 2026
Summary
Ethanol-water clusters (EWC) significantly impact alcoholic beverage quality. Spectroscopic methods reveal how EWC structure and dynamics influence taste and mouthfeel, aiding industry advancements.
Area of Science:
- Food Science and Technology
- Physical Chemistry
- Spectroscopy
Background:
- Sensory quality of alcoholic beverages depends on complex ethanol-water cluster (EWC) structures.
- Understanding these dynamic hydrogen-bonded networks is crucial for beverage science.
Purpose of the Study:
- To review advancements in understanding ethanol-water cluster (EWC) structures in alcoholic beverages.
- To highlight the role of spectroscopy in elucidating EWC characteristics and their impact on sensory perception.
Main Methods:
- Multiscale spectroscopic techniques: infrared (IR), Raman, nuclear magnetic resonance (NMR), and fluorescence spectroscopy.
- Two-dimensional correlation analysis for structural elucidation.
- Integration with computational modeling and artificial intelligence.
Main Results:
- Spectroscopic methods provide molecular insights into EWC structural characteristics, stability, and transformation.
- External factors (temperature, electric fields) and endogenous components (acids, esters) modulate EWC architecture.
- Emerging predictive understanding of EWC behavior through integrated approaches.
Conclusions:
- EWC dynamics are fundamental to the sensory quality (taste, mouthfeel) of alcoholic beverages.
- Spectroscopy, coupled with computational methods, offers a scientific basis for beverage quality monitoring and optimization.
- This knowledge supports tailored sensory design and process improvements in the beverage industry.
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