One-step Real-time Food Quality Analysis by Simultaneous DSC-FTIR Microspectroscopy

Area of Science:

• Food Science
• Analytical Chemistry
• Materials Science

Background:

• Assessing food stability and decomposition is crucial for product quality and safety.
• Traditional methods for stability testing can be time-consuming and may not provide real-time insights.
• Simultaneous analysis of thermal properties and chemical changes is desirable for comprehensive understanding.

Purpose of the Study:

• To review the application of a combined differential scanning calorimetry and Fourier-transform infrared (DSC-FTIR) microspectroscopy technique.
• To demonstrate its utility in simulating accelerated stability tests and detecting decomposition products in real-time.
• To highlight its versatility and effectiveness in various food science contexts.

Main Methods:

• Utilizing differential scanning calorimetry (DSC) to analyze thermal transitions.
• Employing Fourier-transform infrared (FTIR) microspectroscopy for chemical identification.
• Combining DSC and FTIR for simultaneous, real-time analysis of sample behavior under thermal stress.
• Simulating accelerated stability testing conditions.

Main Results:

• The DSC-FTIR technique provides a fast, simple, and powerful analytical approach.
• Successful applications include analyzing encapsulated squid oil stability.
• Demonstrated effectiveness in studying sweetener (aspartame) dehydration and condensation.
• Showcased utility in investigating trehalose dehydration, rehydration, and solidification.
• Enabled online monitoring of the Maillard reaction between glucose and asparagine in the solid state.

Conclusions:

• The DSC-FTIR technique is a valuable tool for rapid food stability assessment.
• It enables simultaneous detection of thermal events and chemical decomposition products.
• The technique offers broad applicability and rapid interpretation for food science research and development.