Here, biogenic and multifunctional active food coatings and packaging with UV shielding and antimicrobial properties were structured from the aqueous dispersion of an industrial byproduct, suberin, which was stabilized with amphiphilic cellulose nanofibers (CNF). The dual-functioning CNF, synthesized in a deep eutectic solvent, functioned as an efficient suberin dispersant and reinforcing agent in the packaging design. The nanofibrillar percolation network of CNF provided a steric hindrance against the coalescence of the suberin particles. The low CNF dosage of 0.5 wt% resulted in dispersion with optimal viscosity (208.70 Pa.s), enhanced stability (instability index of <0.001), and reduced particle size (9.37 ± 2.43 μm). The dispersion of suberin and CNF was further converted into self-standing films with superior UV-blocking capability, good thermal stability, improved hydrophobicity (increase in water contact angle from 61° ± 0.15 to 83° ± 5.11), and antimicrobial properties against gram-negative bacteria. Finally, the synergistic bicomponent dispersions were demonstrated as fruit coatings for bananas and packaging for strawberries to promote their self-life. The coatings and packaging considerably mitigated fruit deterioration and improved their freshness by preventing moisture loss and microbial attack. This sustainable approach is expected to pave the way toward advanced, biogenic, and active food packaging based on widely available bioresources.

中文翻译：

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由木材木栓质和纤维素纳米纤维协同水分散体制成的多功能生物薄膜和涂层

在这里，具有紫外线屏蔽和抗菌特性的生物源和多功能活性食品涂料和包装是由工业副产品木栓质的水分散体构成的，木栓质是用两亲性纤维素纳米纤维（CNF）稳定的。在低共熔溶剂中合成的双功能 CNF 在包装设计中充当高效的木栓质分散剂和增强剂。 CNF 的纳米纤丝渗透网络提供了空间位阻，防止木栓质颗粒的聚结。 0.5 wt% 的低 CNF 剂量使分散体具有最佳粘度 (208.70 Pa.s)、增强的稳定性（不稳定指数 <0.001）和减小的粒径 (9.37 ± 2.43 μm)。木栓质和CNF的分散体进一步转化为自支撑薄膜，具有优异的紫外线阻挡能力、良好的热稳定性、改善的疏水性（水接触角从61°±0.15增加到83°±5.11）以及对克的抗菌性能- 阴性细菌。最后，协同双组分分散体被证明可以用作香蕉的水果涂层和草莓的包装，以促进其自身寿命。涂层和包装可防止水分流失和微生物侵袭，从而显着减轻水果变质并提高其新鲜度。这种可持续的方法预计将为基于广泛可用的生物资源的先进、生物和活性食品包装铺平道路。