College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China.
College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China.
Int J Biol Macromol. 2018 Oct 15;118(Pt A):469-477. doi: 10.1016/j.ijbiomac.2018.06.090. Epub 2018 Jun 23.
In the present study, polysaccharides from chickpea hull (CHPS) were incorporated into carboxymethyl cellulose (CMC) for the development of CMC-based films. The physical and mechanical properties, color, transmittance, antioxidant and antimicrobial activities were investigated, and differential scanning calorimetry (DSC), Fourier transform-infrared (FT-IR) spectroscopy and thermogravimetric analysis (TGA) were applied to study the potential interaction, structure and thermal stabilization of the prepared films. The results revealed that some physical and mechanical properties of films, like moisture content, elongation at break and water vapor permeability, were decreased. While thickness, swelling ratio, water solubility and tensile strength were significantly increased (p < 0.05) compared with control film. Furthermore, the films exhibited potential antioxidant effects on DPPH and ABTS free radicals. The results of scanning electron microscopy showed rough and heterogeneous morphology for CMC-CHPS films while control film exhibited smooth, homogenous and compact structure. FT-IR results reflected good interaction of chemical groups and bonds between CMC and CHPS. DSC results showed that glass transition temperature increased significantly (p < 0.05) from 82.68 to 90.39 °C compared with control of 78.21 °C. Thermal stability of all films was improved, indicating that the films could be used as biocomposite materials for packaging of food products.
在本研究中，将鹰嘴豆壳多糖（CHPS）掺入羧甲基纤维素（CMC）中，以开发基于 CMC 的薄膜。研究了其物理和机械性能、颜色、透光率、抗氧化和抗菌活性，并应用差示扫描量热法（DSC）、傅里叶变换红外（FT-IR）光谱和热重分析（TGA）来研究潜在的相互作用、结构和热稳定性。结果表明，与对照薄膜相比，一些薄膜的物理和机械性能（如水分含量、断裂伸长率和水蒸气透过率）降低，而厚度、溶胀比、水溶性和拉伸强度显著增加（p < 0.05）。此外，薄膜对 DPPH 和 ABTS 自由基表现出潜在的抗氧化作用。扫描电子显微镜的结果表明，CMC-CHPS 薄膜呈现出粗糙和不均匀的形态，而对照薄膜则呈现出光滑、均匀和致密的结构。FT-IR 结果反映了 CMC 和 CHPS 之间化学基团和键的良好相互作用。DSC 结果表明，与对照的 78.21°C 相比，玻璃化转变温度从 82.68°C 显著提高到 90.39°C（p < 0.05）。所有薄膜的热稳定性都得到了提高，表明这些薄膜可用作食品包装的生物复合材料。
