The soy protein isolate-based films enhanced with quaternary ammonium salt lignin-cinnamaldehyde composite particles via multiple cross-linking of hydrogen and chemical bonding.

Soy protein isolate can be used as packaging material for fruit preservation. However, its application is limited because of poor antibacterial properties and mechanical properties. To solve this problem, the composite particles with multifunctional properties were prepared with quaternary ammonium lignin and cinnamaldehyde, which were added to soy protein isolate films.

Tough, antibacterial, and antioxidant chitosan-based composite films enhanced with proanthocyanidin and carvacrol essential oil for fruit preservation.

Post-harvest fruits are susceptible to microbial infections and spoilage, and the development of multifunctional green preservation films to extend the shelf-life of fruits is desirable. In this study, multifunctional antibacterial and antioxidant fruit preservation films were developed by incorporating natural plant actives of proanthocyanidins and carvacrol essential oils into chitosan-dialdehyde cellulose composite films. The composite film had good mechanical properties, with a tensile strength of 78.

Insights into the pH-dependent mechanism of peracetic acid activation by biochar-supported zero-valent iron/cobalt bimetallic nanoparticles: The shift of reactive sites and the dual role of hydrogen peroxide.

The peracetic acid (PAA)-based water purification process is often controlled by the solution pH. Herein, we explored the usage of biochar (BC) supported zero-valent iron/cobalt nanoparticles (Fe/Co@BC) for triggering PAA oxidation of sulfamethazine (SMT), and discovered the PAA activation mechanisms at different pHs. Fe/Co@BC exhibited extraordinary PAA activation efficiency over the pH range of 3.