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Nowadays, about 30% of food is damaged or wasted during the transport and preservation process. Therefore, there exists a big challenge to enhance the shelf-life and safety of perishable vegetables and fruits at a minimal cost. Herein, a highly scalable and innovative natural-derived bio-nanocomposites based on the available and low-cost materials (wood powder and wheat gluten) is designed for food preservation. Both the lignocellulose nanofibers (LCNF)-wheat gluten (WG) hybrid coatings on the surface of fruits and the hybrid packaging films show prominent preservation performance for six kinds of fruits with different respiratory metabolisms to prolong the shelf-life of fruits. The multifunctional LCNF-WG coating and packaging displayed excellent barrier properties to oxygen (15.9 cm3 μm m−2 day−1 kPa−1) and water vapour (10.3 g mm−1 m−2 day−1) and excellent antimicrobial, UV blocking, water-resistant, reusable and recoverability performance, making it a promising economic alternative in food preservation with the natural-derived material. Moreover, the low cost and degradation ability of this natural-derived bio-nanocomposite are beneficial for producers, consumers, and the environment. [Display omitted] • LCNF played an important role in the colloidal stability performance. • LCNF-WG coatings and films show prominent preservation performance. • LCNF-WG films displayed excellent barrier properties to oxygen and water vapour. • LCNF-WG films displayed excellent antimicrobial, UV blocking, reusable performance. [ABSTRACT FROM AUTHOR]

[Display omitted] • Phosphated lignocellulose nanofibrils were combined with MXene and gelatin; • The aerogel exhibited excellent fire retardancy with fire-warning performance; • Performance of electromagnetic interference shielding also achieved highly. Lightweight electromagnetic interference (EMI) shielding material with environment-friendly and high fire-safe has imperative practical significance in civil electronic devices. Herein, a distinct strategy was proposed to integrate phosphated lignocellulose nanofibrils (PLCNFs), gelatin, and MXene into a hybrid composite aerogel (PGM aerogel) with ultralight weight and high porosity. Due to the synergistic flame retardant effect of the ternary mixture, PGM aerogel exhibited excellent fire retardancy, whose dramatical changes in electronic resistance was supposed to achieve a short fire-warning signal (∼1 s). The limiting oxygen index (LOI) was as high as 32 % and the peak heat release rate (PHRR) was relatively as low as 30.1 W/g. Furthermore, the aerogel also displayed great specific EMI shielding effectiveness (SE) of SSE/t (14230 dB cm2 g−1) at 8.2 GHz. Therefore, this PGM aerogel can be a potential candidate in both EMI shielding and fire-warning fields. [ABSTRACT FROM AUTHOR]