Current trends to green food sample preparation. A review

Abstract

Food analysis plays an important role in preserving the integrity and quality of food. Despite these noble goals, most official methods for the analysis of nutrients (vitamins, carotenoids, etc.) antioxidants (polyphenols, etc.), and contaminants (pesticides, veterinary drugs, mycotoxins etc.) still rely on time-consuming, complex, and polluting procedures of sample preparation. To solve this discrepancy, the scientific community has frantically been working to make extraction procedures faster and safer, resorting to miniaturization, automation, low-energy consumption, and solvents/sorbents from renewable resources. This review provides an overview of the most sustainable extraction methods in food analysis, developed over the last ten years (2014–2024), including relevant examples of both liquid phase and sorbent-based techniques. Particular emphasis is placed on solutions aimed at improving the method sustainability such as smart devices, neoteric solvents, and composite sorbents, discussing the latest advancements and future trends in this sector.

Keywords

• Sample preparation
• Food analysis
• Green chemistry
• Solid-phase extraction
• Liquid-phase extraction