用纳米粘土对普鲁兰多糖-乳清蛋白生物纳米复合膜功能特性的改性
Modification of functional properties of pullulan-whey protein bionanocomposite films with nanoclay.
作者信息
Hassannia-Kolaee Mahbobeh, Khodaiyan Faramarz, Shahabi-Ghahfarrokhi Iman
机构信息
Department of Food Science and Technology, Varamin-Pishva Branch, Islamic Azad University, Varamin, Iran.
Bioprocessing and Biodetection Laboratory (BBL), Department of Food Science, Engineering and Technology, Faculty of Agricultural Engineering and Technology, Campus of Agriculture and Natural Resources, University of Tehran, P.O. Box 4111, Karaj, 31587-77871 Iran.
出版信息
J Food Sci Technol. 2016 Feb;53(2):1294-302. doi: 10.1007/s13197-015-1778-3. Epub 2015 Nov 6.
In this study, biodegradable nanocomposite film composed of pullulan - whey protein isolate (WPI) - montmorillonite (MMT) were developed and characterized as a function of incorporating various amounts of MMT nanoparticles (0, 1, 3 and 5 % wt). Results showed that the water-vapor permeability, moisture content, moisture absorption and water solubility decreased when the nano-MMT content was increased. Tensile strength improved and elongation at break simultaneously decreased with increasing MMT content. The glass transition temperature (Tg(and melting-point temperature (Tm) increased with increasing nano-MMT content. Scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis revealed uniform distribution of MMT into the polymer matrix. Atomic force microscopy (AFM) showed enhancement of films' roughness with increasing MMT content.
在本研究中，开发了由普鲁兰多糖-乳清分离蛋白（WPI）-蒙脱石（MMT）组成的可生物降解纳米复合薄膜，并根据掺入不同量的MMT纳米颗粒（0、1、3和5 wt%）对其进行了表征。结果表明，随着纳米MMT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。随着MMT含量的增加，拉伸强度提高，断裂伸长率同时降低。玻璃化转变温度（Tg）和熔点温度（Tm）随纳米MMT含量的增加而升高。扫描电子显微镜（SEM）和X射线衍射（XRD）分析表明MMT在聚合物基体中分布均匀。原子力显微镜（AFM）显示，随着MMT含量的增加，薄膜的粗糙度增加。
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