Handheld Devices for Food Authentication and Their Applications: A Review

Area of Science:

• Food Science
• Analytical Chemistry
• Technology Innovation

Background:

• Food authentication is critical for consumer safety and regulatory compliance.
• Traditional analytical methods can be time-consuming and require specialized laboratories.
• Emerging miniaturized and handheld technologies offer potential for on-site food analysis.

Purpose of the Study:

• To review miniaturized technologies and handheld devices for food authentication.
• To summarize their characteristics, including technology types, design, operation, and data handling.
• To analyze current applications across different food commodity types.

Main Methods:

• Literature review of commercially available handheld devices and their applications.
• Categorization of technologies (spectroscopy, imaging, sensor arrays) and applications by commodity type (plant and animal origin).
• Analysis of device characteristics and operational aspects.

Main Results:

• Over 150 applications of commercial handheld devices were identified, primarily for plant-based foods (~60%).
• A wide array of technologies are employed, but no single technology suits all authentication needs.
• Current practical implementation of these technologies is nascent.

Conclusions:

• Handheld technologies show significant promise for food authentication.
• The primary bottleneck for widespread adoption is the need for extensive, maintained spectral databases for each application.
• Facilitating data sharing and calibration transfer is essential to overcome implementation barriers.