Microchips for CE: breakthroughs in real-world food analysis.

Area of Science:

• Analytical Chemistry
• Microfluidics
• Food Science

Background:

• Food matrices present complex analytical challenges due to their intricate composition.
• Capillary electrophoresis (CE) microchips offer a promising platform for overcoming these challenges.

Purpose of the Study:

• To review recent advances (2-3 years) in CE microchip technology for food analysis.
• To highlight strategies for improving selectivity, sensitivity, and sample preparation simplicity.
• To discuss emerging applications and detection methods in food analysis using microchips.

Main Methods:

• Direct injection strategies by enhancing peak capacity.
• Microchip-based separation and measurement of target analytes.
• On-chip integration of sample preparation steps.
• Incorporation of nanotechnology for enhanced detection.

Main Results:

• Successful separations of DNA probes, biogenic amines, vanilla flavors, and dyes.
• Advancements in transgenic food analysis, fraud detection, and toxin identification.
• Continued dominance of electrochemical and Laser-Induced Fluorescence (LIF) detection, with emerging alternatives.
• Integration of calibration and quality control on-chip, achieving high accuracy and precision.

Conclusions:

• CE microchips are significantly enhancing analytical capabilities for complex food matrices.
• The integration of sample preparation and advanced detection methods is crucial for commercialization.
• Future commercialization of microfluidic chips is promising due to improved analytical potency.