Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan, ROC.
Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan, ROC; Advanced Membrane Materials Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan, ROC; R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan 320, Taiwan, ROC.
Int J Biol Macromol. 2023 Mar 31;232:123423. doi: 10.1016/j.ijbiomac.2023.123423. Epub 2023 Jan 27.
Hybrid eco-friendly nanocomposite films were fabricated by blending high-methoxyl pectin, gelatin, TiO, and curcumin through the solution casting method. Various concentrations (0-5 wt%) of TiO nanoparticles (TNPs) and curcumin as an organic filler were added to the blend solutions. A high TNP concentration affected the surface morphology, roughness, and compactness of the films. Additionally, 3D mapping revealed the nanoparticle distribution in the film layers. Moisture content, water solubility, and light transmittance reduced dramatically with increasing TNP content, in accordance with the water vapor and oxygen permeabilities. X-ray diffraction revealed that the films were semicrystalline nanocomposites, and the thermal properties of the films increased when 5 wt% of TNPs was incorporated into the blend solution. Fourier-transform infrared and Raman analyses revealed interactions among biopolymers, nanoparticles, and organic fillers through hydrogen bonding. The shelf life of fresh salmon fillets was prolonged to six days for all groups, revealed by total viable counts and psychrotrophic bacteria counts, and the pH of the salmon fillets could be extended until the sixth day for all groups. Biodegradation assays demonstrated a significant weight loss in the nanocomposite films. Therefore, a nanocomposite film with 5 wt% TNPs could potentially be cytotoxic to NIH 3T3 cells.
通过溶液浇铸法将高甲氧基果胶、明胶、TiO 和姜黄素混合，制备了混合生态友好型纳米复合膜。将不同浓度（0-5wt%）的 TiO 纳米粒子（TNPs）和姜黄素作为有机填料添加到共混溶液中。高 TNPs 浓度会影响薄膜的表面形貌、粗糙度和致密度。此外，3D 映射揭示了纳米颗粒在薄膜层中的分布。随着 TNPs 含量的增加，水分含量、水溶性和光透过率显著降低，符合水蒸气和氧气渗透率的要求。X 射线衍射表明，这些薄膜是半结晶纳米复合材料，当将 5wt%的 TNPs 掺入共混溶液中时，薄膜的热性能会提高。傅里叶变换红外和拉曼分析通过氢键揭示了生物聚合物、纳米粒子和有机填料之间的相互作用。通过总活菌计数和嗜冷菌计数，所有组的新鲜三文鱼鱼片的保质期延长到六天，所有组的三文鱼鱼片的 pH 值都可以延长到第六天。生物降解试验表明纳米复合膜的重量显著减轻。因此，含有 5wt%TNPs 的纳米复合膜可能对 NIH 3T3 细胞具有细胞毒性。
