Recent advances in the construction of micro/nanofibres based on food-derived biopolymers using solution blown spinning technology: A review

To address the dual challenges of traditional plastic pollution and consumption upgrades confronting the food industry, developing biodegradable micro/nanofibre materials based on food-derived polymers has emerged as an effective solution. Solution blow spinning (SBS), as an efficient, safe and easily scalable emerging technology, provides an ideal platform for processing food-derived polymers and overcoming their inherent limitations. This paper systematically reviewed the principles of SBS technology and advanced spinning strategies. Specifically, the paper elaborated on the fibre formation mechanisms based on single or composite food-derived polymers and summarises the regulation patterns of fibres in terms of chemical structure, mechanical properties, barrier performance, and functional characteristics. Through composite modification and functional component loading, micro/nanofibres with outstanding performance can be successfully produced. These fibres have demonstrated significant application potential in food sectors such as active packaging, smart sensing, and controlled-release systems, effectively extending the shelf life of various food products. Despite promising prospects, current research requires further exploration in process optimization, large-scale production, and systematic validation within real food systems to advance the industrial application of this technology. This review established a holistic framework-integrating 'process-material-property-application' relationships-to provide a systematic roadmap for the precision design of micro/nanofibres based on food-derived biopolymers and facilitate their industrial transition in food packaging, smart sensing, and controlled release of active compounds.