Qin Qingyu, Li Wenhu, Zhang Xinyan, Gao Bing, Han Lujia, Liu Xian
Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Beijing 100083, China.
National Engineering Laboratory for Reducing Emissions from Coal Combustion, School of Energy and Power Engineering, Shandong University, Jinan, Shandong 250061, China.
Food Chem. 2022 Sep 1;387:132769. doi: 10.1016/j.foodchem.2022.132769. Epub 2022 Mar 23.
In this study, the feasibility of fabricating protein-based bionanocomposite films (PBBFs) was analysed by applying capsicum leaf protein (CLP) and cellulose nanofiber (CNF) as raw materials. The effects of different amounts of CNF (solid content 2%) on physicochemical and material properties of PBBFs were investigated. The results showed nanoscale CNFs exhibited good interfacial compatibility with CLP. The hydroxyl groups on the CNF surface promoted the association of hydrogen bonds between CLP, glycerol and CNF, which improved the crystal structure and thermal stability of PBBFs. Concurrently, the mechanical properties and hydrophobicity of PBBFs are also enhanced. PBBFs with 60% CNF content have maximum flexibility and hydrophobicity. All PBBFs exhibited ultraviolet barrier performance, indicating that PBBFs had potential application prospects in the development of degradable food packaging materials. The results of the present study can provide a theoretical basis for the efficient utilisation of capsicum planting waste while improving the ecosystem.
在本研究中，以辣椒叶蛋白（CLP）和纤维素纳米纤维（CNF）为原料，分析了制备蛋白质基生物纳米复合薄膜（PBBFs）的可行性。研究了不同含量的CNF（固含量2%）对PBBFs物理化学和材料性能的影响。结果表明，纳米级CNF与CLP表现出良好的界面相容性。CNF表面的羟基促进了CLP、甘油和CNF之间氢键的缔合，改善了PBBFs的晶体结构和热稳定性。同时，PBBFs的机械性能和疏水性也得到增强。CNF含量为60%的PBBFs具有最大的柔韧性和疏水性。所有PBBFs均表现出紫外线阻隔性能，表明PBBFs在可降解食品包装材料开发方面具有潜在的应用前景。本研究结果可为辣椒种植废弃物的高效利用提供理论依据，同时改善生态系统。
