Novel Integrated Flow-Based Steam Distillation and Titration System for Determination of Volatile Acidity in Wines

Area of Science:

• Analytical Chemistry
• Food Science
• Chemical Engineering

Background:

• Volatile acidity is a key quality parameter in wines.
• Accurate determination of volatile acidity is crucial for winemaking.
• Existing methods can be time-consuming and require manual calibration.

Purpose of the Study:

• To develop a novel, integrated flow-based system for automated volatile acidity determination in wines.
• To eliminate the need for calibration in the analysis.
• To improve the efficiency and accuracy of wine quality assessment.

Main Methods:

• Development of an integrated system combining steam distillation and titration with spectrophotometric detection.
• Automated sample introduction into a heated steam distillation module.
• Flow-based monosegment analysis for distillate and titrant mixing and detection.

Main Results:

• The developed system achieved high accuracy and precision for volatile acidity determination in wine samples.
• Both separate distillation/titration procedures and the integrated system showed high performance.
• Precision was below 9.4% and accuracy better than 6.7% for the integrated system in wine samples.

Conclusions:

• The novel integrated system provides a robust and automated method for volatile acidity analysis in wines.
• The system's design eliminates the need for calibration, simplifying the analytical workflow.
• This technology offers a significant advancement for routine wine quality control.