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中国精品科技期刊2020
向飞,李冲,夏玉婷,等. 纳米TiO2对魔芋葡甘聚糖/玉米醇溶蛋白复合膜结构和性能的影响[J]. 食品工业科技,2021,42(9):221−227. doi: 10.13386/j.issn1002-0306.2020070377.
引用本文: 向飞,李冲,夏玉婷,等. 纳米TiO2对魔芋葡甘聚糖/玉米醇溶蛋白复合膜结构和性能的影响[J]. 食品工业科技,2021,42(9):221−227. doi: 10.13386/j.issn1002-0306.2020070377.
XIANG Fei, LI Chong, XIA Yuting, et al. Effect of Nano Titanium Dioxide on the Structure and Properties of KGM/Zein Blend Films[J]. Science and Technology of Food Industry, 2021, 42(9): 221−227. (in Chinese with English abstract). doi: 10.13386/ j.issn1002-0306.2020070377.
Citation: XIANG Fei, LI Chong, XIA Yuting, et al. Effect of Nano Titanium Dioxide on the Structure and Properties of KGM/Zein Blend Films[J]. Science and Technology of Food Industry, 2021, 42(9): 221−227. (in Chinese with English abstract). doi: 10.13386/ j.issn1002-0306.2020070377.

纳米TiO2对魔芋葡甘聚糖/玉米醇溶蛋白复合膜结构和性能的影响

Effect of Nano Titanium Dioxide on the Structure and Properties of KGM/Zein Blend Films

  • 摘要: 本文以魔芋葡甘聚糖、玉米醇溶蛋白为成膜基质,添加不同含量(1%、2%、3%)的纳米TiO2,以流延方式制备纳米TiO2/魔芋葡甘聚糖/玉米醇溶蛋白复合膜,并对复合膜的微观结构、热性能、力学性能、疏水性、水蒸气透过率和抑菌性能进行了分析。结果表明,纳米TiO2与魔芋葡甘聚糖、玉米醇溶蛋白间发生相互作用,有良好的相容性;添加纳米TiO2使复合膜表面粗糙度增加,复合膜热稳定性和疏水性增强,力学性能降低;纳米TiO2添加量为1% wt时,复合膜的水蒸气透过率(5.7×10−13 g·cm/(cm2·s·Pa))和溶胀率(16.4%)最小,水接触角值(99.6 °)最大;复合膜对金黄色葡萄球菌和大肠杆菌有明显的抑制作用,对枯草芽孢杆菌的抑制作用不明显。本研究为纳米TiO2/魔芋葡甘聚糖/玉米醇溶蛋白复合膜作为包装材料的开发与应用提供一定参考依据。

     

    Abstract: In this paper, konjac glucomannan and zein were used as film-forming substrates, and nano-TiO2 under different contents (1%, 2%, 3%) were added to prepare nano-TiO2/konjac glucomannan/zein blend films by casting method.The microstructure, thermal, mechanical properties, hydrophobicity, water vapor permeability and antibacterial properties of the film were tested. The result showed that there were interactions and compatibilities between nano-TiO2 and konjac glucomannan/zein matrix. The roughness of surface was increased, the thermal stability and hydrophobicity were improved, but the mechanical properties were decreased. The amount of nano-TiO2 about 1% wt, water vapor permeability (5.7×10−13 g·cm/(cm2·s·Pa)) and swelling (16.4%) got the minimum values, and the water contact angle (99.6 °) had the max values. Nano-TiO2/konjac glucomannan/zein blend films obvious had inhibitory effect on Staphylococcus aureus and Escherichia coli., but not obvious on Bacillus subtilis. This study provided a reference basis for the development and application of konjac glucomannan/zein/nano-TiO2 as packaging materials.

     

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