Han Yingying, Yan Wentao, Hou Yuping, Wang Dongmei, Yu Miao
College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
College of Forestry, Northwest A&F University, Yangling 712100, China.
Foods. 2023 Jul 27;12(15):2842. doi: 10.3390/foods12152842.
With the increasing awareness of ecological and environmental protection, the research on eco-friendly materials has experienced a considerable increase. The objective of our study was to explore a novel soy protein isolate (SPI) film functionalized with antioxidants extracted from husk (XSHE) as bio-based active packaging films. The films were evaluated in light of their structure, physical machinery, and antioxidant performance using advanced characterization techniques. The FTIR and microscopy results revealed the hydrogen-bond interaction between the SPI and XSHE and their good compatibility, which contributed to the improvement in various properties of the composite films, such as tensile strength (TS), UV blocking, and the water barrier property. As the XSHE content increased to 5%, the TS of the films dramatically increased up to 7.37 MPa with 47.7% and the water vapor permeability decreased to 1.13 × 10 g m m s Pa with 22.1%. Meanwhile, the introduction of XSHE caused further improvement in the antioxidant capacity of films, and the release of active agents from films was faster and higher in 10% ethanol than it was in a 50% ethanol food simulant. Overall, SPI-based films functionalized with XSHE demonstrated promising potential applications in food packaging.
随着生态环境保护意识的不断提高，对环保材料的研究有了显著增加。我们研究的目的是探索一种新型的大豆分离蛋白（SPI）薄膜，该薄膜用从稻壳中提取的抗氧化剂（XSHE）进行功能化处理，作为生物基活性包装薄膜。使用先进的表征技术，根据薄膜的结构、物理机械性能和抗氧化性能对其进行了评估。傅里叶变换红外光谱（FTIR）和显微镜结果揭示了SPI与XSHE之间的氢键相互作用及其良好的相容性，这有助于改善复合薄膜的各种性能，如拉伸强度（TS）、紫外线阻隔性能和阻水性能。当XSHE含量增加到5%时，薄膜的TS显著提高至7.37 MPa，增幅为47.7%，水蒸气透过率降至1.13×10 g m m s Pa，降幅为22.1%。同时，XSHE的引入使薄膜的抗氧化能力进一步提高，并且在10%乙醇中薄膜中活性剂的释放比在50%乙醇食品模拟物中更快、更高。总体而言，用XSHE功能化的基于SPI的薄膜在食品包装中显示出有前景的潜在应用。
