开菲尔多糖-乳清分离蛋白-TiO₂纳米复合膜的研制与表征
Development and characterization of the kefiran-whey protein isolate-TiO2 nanocomposite films.
作者信息
Zolfi Mohsen, Khodaiyan Faramarz, Mousavi Mohammad, Hashemi Maryam
机构信息
Department of Food Science, Engineering & Technology, Faculty of Agricultural Engineering and Technology, University of Tehran, P.O. Box 4111, Karaj 31587-77871, Iran.
Department of Food Science, Engineering & Technology, Faculty of Agricultural Engineering and Technology, University of Tehran, P.O. Box 4111, Karaj 31587-77871, Iran.
出版信息
Int J Biol Macromol. 2014 Apr;65:340-5. doi: 10.1016/j.ijbiomac.2014.01.010. Epub 2014 Jan 10.
Biodegradable kefiran-whey protein isolate (WPI)-titanium dioxide (TiO2) blend films were developed and characterized as a function of incorporating amount of TiO2 nanoparticles (1, 3 and 5% wt.). Results showed that the water vapor permeability, moisture content, moisture absorption and water solubility decreased by increasing the nano-TiO2 content. Mechanical tests revealed the plasticizing effect of TiO2 nanoparticles on the kefiran-WPI-TiO2 film. Addition of TiO2 nanoparticles to kefiran-WPI films significantly decreased tensile strength and Young's modulus, while increased its elongation at break. Differential scanning calorimetry data indicated that the glass transition temperature significantly changed by adding nano-TiO2. X-ray diffraction analysis also demonstrated that crystal type in kefiran-WPI was not affected by incorporation of TiO2 nanoparticles. A uniform distribution at 1 and 3% wt. loading levels of TiO2 nanoparticles was observed using scanning electron microscopy (SEM) micrographs.
制备了可生物降解的开菲尔多糖-乳清蛋白分离物（WPI）-二氧化钛（TiO₂）共混膜，并根据TiO₂纳米颗粒的掺入量（1%、3%和5%重量）对其进行了表征。结果表明，随着纳米TiO₂含量的增加，水蒸气透过率、水分含量、吸湿率和水溶性均降低。力学测试揭示了TiO₂纳米颗粒对开菲尔多糖-WPI-TiO₂薄膜的增塑作用。向开菲尔多糖-WPI薄膜中添加TiO₂纳米颗粒显著降低了拉伸强度和杨氏模量，同时提高了其断裂伸长率。差示扫描量热法数据表明，添加纳米TiO₂会使玻璃化转变温度发生显著变化。X射线衍射分析还表明，开菲尔多糖-WPI中的晶体类型不受TiO₂纳米颗粒掺入的影响。使用扫描电子显微镜（SEM）显微照片观察到，在1%和3%重量的TiO₂纳米颗粒负载水平下分布均匀。
Zotero 插件