In the current study, a set of biodegradable soybean polysaccharide (SSPS) nanocomposites containing different ratios of TiO₂ nanoparticles was characterized as new packaging system. X-ray diffraction (XRD) measurement showed that the crystalline structure of the TiO₂ nanoparticles remained intact in the polysaccharide matrix and the surface of nanocomposites containing 1 to 3% TiO₂ was observed morphologically uniform under scanning electron microscopy (SEM). Dynamic mechanical thermal analysis revealed that the magnitude of storage modulus was 3.62-fold higher in SPSS/TiO₂ nanocomposites containing 7 wt. % of TiO₂ than control SSPS indicating improvement in the physical properties of the film supposed to be utilized for food packaging. With respect to the concern over the safety of these nanocomposites, inductively coupled plasma-optical emission spectroscopy (ICP-OES) showed that no TiO₂ was detected in bread samples covered by SSPS/TiO₂ film and stored for 6 months. Similarly, the nanocomposite films only released a minuscule amount (21.05 ± 0.054 ppm) of TiO₂ in water. TiO₂ nanoparticles were found in the plasma membrane of epithelial cell line after long-term exposure (10-day) of these cells to large amounts of the free nanoparticles. SSPS/TiO₂ nanocomposites showed excellent antimicrobial activity against Staphylococcus aureus PTCC 1431 (ATCC 25923), while neither anti-cancerous nor pro-cancerous activity was observed for these nanocomposites denoting their neutrality with respect to cancer suppression or progression in gastrointestinal tract. In conclusion, SSPS/TiO₂ nanocomposites could be a promising packaging system for food industries’ objective regarding their physical characteristics, low rate of Ti transition, and low health risk.

在当前的研究中，一组包含不同比例的TiO ₂纳米颗粒的可生物降解的大豆多糖（SSPS）纳米复合材料被表征为新的包装系统。X射线衍射（XRD）测量表明，TiO ₂纳米颗粒的晶体结构在多糖基质中保持完好无损，并且在扫描电子显微镜（SEM）下观察到含有1-3％TiO ₂的纳米复合材料的表面在形态上是均匀的。动态机械热分析表明，在包含7 wt。％的SPSS / TiO ₂纳米复合材料中，储能模量高3.62倍。TiO _2的百分比与对照SSPS相比，表明应该用于食品包装的薄膜的物理性能有所改善。相对于该关注在这些纳米复合材料的安全性，电感耦合等离子体-光学发射光谱法（ICP-OES）表明没有的TiO ₂通过SSPS /二氧化钛覆盖的面包样品中检测到₂膜和保存6个月。类似地，纳米复合膜仅在水中释放出微量的TiO ₂（21.05±0.054 ppm）。在将这些细胞长期（10天）暴露于大量的游离纳米颗粒后，在上皮细胞系的质膜中发现了TiO ₂纳米颗粒。SSPS / TiO ₂纳米复合材料显示出优异的抗微生物活性金黄色葡萄球菌PTCC 1431（ATCC 25923）虽然未观察到这些纳米复合材料的抗癌或抗癌活性，但表明它们在抑制癌症或胃肠道发展方面具有中立性。总之，SSPS / TiO ₂纳米复合材料由于其物理特性，低Ti转化率和低健康风险而成为食品工业目标的有前途的包装系统。