Valorization of Food Industry Waste for Bioactive Compounds
Summary
Globally, the food industry generates vast volumes of by-products—ranging from fruit pomace and vegetable peels to cereal brans and animal processing residues—which represent both an environmental challenge and a reservoir of high-value molecules. Valorisation seeks to recover bioactive compounds such as phenolic antioxidants, peptides, carotenoids and essential oils through increasingly efficient and green extraction and bioconversion processes. Advances in solvent-free techniques, enzyme-assisted extractions and integrated biorefinery schemes have broadened the spectrum of recoverable compounds while reducing energy consumption and secondary waste. Applications span nutraceuticals, functional foods, pharmaceuticals and value-added materials, demonstrating the potential to transform linear waste flows into circular economic value chains. Persistent challenges include feedstock heterogeneity, scale-up of laboratory protocols and ensuring regulatory compliance for food-grade extracts. A multidisciplinary strategy that integrates process engineering, analytical chemistry and life-cycle assessment is critical to unlock the full potential of industrial food waste streams, thereby enhancing sustainability, reducing carbon footprints and creating new revenue streams across global food networks.
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Valorization of Food Industry Waste for Bioactive Compounds publication trend
The graph below shows the total number of articles in valorization of food industry waste for bioactive compounds across all publications each year (not limited to Nature Index journals).
Technical terms
Valorisation: The process of converting waste materials into useful products with economic value.
Bioactive compound: A chemical constituent that exerts a beneficial effect on living tissues or organisms.
Side stream: A by-product or secondary output generated during food processing operations.
Nanoemulsion: A colloidal dispersion of nanoscale droplets used to improve solubility and bioavailability of hydrophobic agents.
Green extraction: Environmentally benign methods for isolating target compounds using minimal energy and eco-friendly solvents.
References
- Recycling food and agriculture by-products to mitigate climate change: a review. Environmental Chemistry Letters (2023).
- Valorisation potential and challenges of food side product streams for food applications: A review using the example of Switzerland. Future Foods (2024).
- Novel Approaches in the Valorization of Agricultural Wastes and Their Applications. Journal of Agricultural and Food Chemistry (2022).
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