A novel packaging material that integrates cushioning and antibacterial properties is of paramount importance for mitigating mechanical damage and microbial invasion during postharvest storage and transportation of grapes. Current packaging materials still demonstrate considerable scope for advancement in simultaneously satisfying multiple properties required for preservation. In this study, a zeolite imidazolate framework (ZIF-8) was in-situ grown on hydrophobically modified bacterial cellulose (BC) aerogel to form a synergistic construction system, obtaining a degradable BC/MOF composite aerogel with dual functions of mechanical cushioning and antibacterial activity for grapes preservation. The coordination interactions between Zn2+ in ZIF-8 and the hydroxyl moieties on silanol-functionalized BC confer upon the composite aerogel a robust spatial architecture and mechanical property, with a maximum compressive strength tolerance of 669.41 kPa. During the process of grape preservation for 15 days, the weight loss rate of grapes was only 1.3 %. Furthermore, the aerogels exhibited remarkable efficacy in mitigating membrane lipid peroxidation damage induced by biological stress, while also regulating the activities of stress-related enzymes including lipoxygenase and peroxidase. Aerogels significantly inhibit B. cinerea and other common grape spoilage microbes, combining with physical protection from their 3D network structure to form an antibacterial-cushioning dual preservation mechanism to achieve the fresh-keeping effect. This study systematically demonstrates the potential of the novel BC/MOF antibacterial cushioning material in postharvest preservation of fruits and vegetables, while providing new insights into the synergistic design and fabrication of multifunctional aerogel packaging systems.
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号