食品科学 ›› 2020, Vol. 41 ›› Issue (17): 253-260.doi: 10.7506/spkx1002-6630-20190820-205

• 包装贮运 • 上一篇    下一篇

大豆分离蛋白/纳米纤维素/阿魏酸复合膜的制备及其包装性能

李彤,张宏,赵晓彤,张英龙,张华江,夏宁,刘纯哲,孙多文   

  1. (东北农业大学食品学院,黑龙江 哈尔滨 150030)
  • 出版日期:2020-09-15 发布日期:2020-09-16
  • 基金资助:
    黑龙江省自然科学基金项目(C2018026);黑龙江省博士后科研启动金项目(LBH-Q16019); 2016年东北农业大学学术骨干项目(16XG20);国家自然科学基金青年科学基金项目(31101386); “十三五”国家重点研发计划重点专项(2017YFD0101302); 辽宁省肉类加工与质量安全控制工程技术研究中心开放课题(2018001)

Preparation and Packaging Properties of Soybean Protein Isolate/Cellulose Nanofiber/Ferulic Acid Composite Film

LI Tong, ZHANG Hong, ZHAO Xiaotong, ZHANG Yinglong, ZHANG Huajiang, XIA Ning, LIU Chunzhe, SUN Duowen   

  1. (School of Food Science, Northeast Agricultural University, Harbin 150030, China)
  • Online:2020-09-15 Published:2020-09-16

摘要: 在大豆分离蛋白中添加纳米纤维素和阿魏酸,制备不同组分的大豆蛋白复合膜,研究纳米纤维素和阿魏酸的添加对复合膜的拉伸强度、断裂伸长率、水蒸气透过率、氧气透过率、吸湿性、透光率、接触角及抑菌率的影响。结果表明:当纳米纤维素添加量为20.0 g、阿魏酸添加量为0.4 g时,复合膜的性能最佳,与纯大豆分离蛋白膜相比,其拉伸强度和接触角分别提高116.19%和127.21%,吸湿性也有所提升,而断裂伸长率、水蒸气透过率以及氧气透过率分别降低59.76%、90.91%和77.55%,透光率也显著下降(P<0.05)。通过扫描电子显微镜、傅里叶变换红外光谱和X射线衍射分析可知,阿魏酸的交联作用使蛋白质分子结构变得致密,并使纳米纤维素分子与蛋白质分子间作用力加强,使其表面变得光滑,横截面变得平整,而阿魏酸的添加也使复合膜具有了一定的抑菌作用。本实验为大豆蛋白复合膜的进一步研究提供了技术参考,拓宽了大豆蛋白复合膜的应用范围。

关键词: 大豆分离蛋白;纳米纤维素;阿魏酸;扫描电子显微镜;傅里叶变换红外光谱;X射线衍射

Abstract: Soybe protein isolate (SPI) /cellulose nanofiber (CNF)/ferulic acid (FA) composite films were prepared with different compositions and evaluated for tensile strength, elongation at break, water vapor permeability, oxygen permeability, moisture absorption capacity, transmittance, contact angle and antibacterial efficacy. The results showed that the performance of the composite film with the addition of 20.0 g of CNF and 0.4 g of FA was the best. Compared with pure SPI film, the tensile strength and contact angle of the composite film increased by 116.19% and 127.21%, and the moisture absorption was also improved. The elongation at break, water vapor permeability and oxygen permeability decreased by 59.76%, 90.91% and 77.55%, respectively and the transmittance also decreased significantly (P < 0.05). Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analysis showed that cross-linking with FA made the molecular structure of the protein denser, and strengthened the interaction between the CNF and protein molecules, imparting smother surfaces and flatter cross-sections to the composite film. The addition of FA could also increase the antibacterial effect of the composite film. This study will provide a technical reference for further research on soybean protein films and expand its application range.

Key words: soybean protein isolate; cellulose nanofiber; ferulic acid; scanning electron microscopy; Fourier transform infrared spectroscopy; X-ray diffraction

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