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Structural, physicochemical, and functional (antioxidant-antimicrobial) properties of 2-O-methyl-β-cyclodextrin inclusion with hexahydro-β-acids in chitosan films.
Colloids and Surfaces B: Biointerfaces ( IF 5.8 ) Pub Date : 2020-04-03 , DOI: 10.1016/j.colsurfb.2020.111002
Na Lu 1 , Yumei Liu 1
Affiliation  

The use of synthetic packaging films causes serious environmental problems due to difficulty in recycling and poor biodegradability. Therefore, the present study aimed to develop natural biopolymer-based packaging films. As natural materials, chitosan (CS)-based films containing various concentrations (0.05 %, 0.1 %, and 0.15 %) of the hexahydro-β-acid/2-O-methyl-β-cyclodextrin (HBA/M-β-CD) inclusion complex were prepared and evaluated for structural, physicochemical, antioxidant, and antimicrobial properties. Results of morphological analysis and Fourier transform infrared spectroscopy (FT-IR) demonstrated good compatibility between CS and the HBA/M-β-CD complex and indicated that intermolecular hydrogen bonds were probably formed. Moisture content of the films decreased, whereas water solubility, swelling ratio, and water vapor permeability increased after the addition of HBA/M-β-CD. Optical test showed that addition of the inclusion complex improved the UV light barrier property. The mechanical properties of the film were considerably increased after the incorporation of 0.1 % HBA/M-β-CD. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity of HBA/M-β-CD-CS films was ten times higher than that of the control CS film. Furthermore, the incorporation of HBA/M-β-CD conferred the films with good antimicrobial activity against various foodborne pathogens. In summary, our results indicated that encapsulation with M-β-CD was an effective way of introducing HBA into CS film. This film can be used as an active packaging material for food preservation.

中文翻译:

壳聚糖膜中2-O-甲基-β-环糊精与六氢-β-酸的包合物的结构,物理化学和功能(抗氧化剂-抗微生物)特性。

合成包装膜的使用由于难以回收和差的生物降解性而引起严重的环境问题。因此,本研究旨在开发基于天然生物聚合物的包装膜。作为天然材料,包含各种浓度(0.05%,0.1%和0.15%)的六氢-β-酸/ 2-O-甲基-β-环糊精(HBA /M-β-CD)的壳聚糖(CS)基薄膜制备了包合物,并对其结构,物理化学,抗氧化剂和抗菌性能进行了评估。形态分析和傅里叶变换红外光谱(FT-IR)结果表明CS与HBA /M-β-CD配合物之间具有良好的相容性,并表明可能形成了分子间氢键。薄膜的水分含量降低,而水溶性,溶胀率,加入HBA /M-β-CD后水蒸气渗透率增加。光学测试表明,加入包合物可以改善紫外光的阻隔性能。加入0.1%HBA /M-β-CD后,薄膜的机械性能大大提高。HBA /M-β-CD-CS薄膜的2,2-二苯基-1-吡啶并肼基(DPPH)清除自由基的活性比对照CS薄膜高十倍。此外,HBA /M-β-CD的掺入使薄膜具有对各种食源性病原体的良好抗菌活性。总之,我们的结果表明,用M-β-CD包封是将HBA引入CS膜的有效方法。该膜可以用作食品保鲜的活性包装材料。光学测试表明,加入包合物可以改善紫外光的阻隔性能。加入0.1%HBA /M-β-CD后,薄膜的机械性能大大提高。HBA /M-β-CD-CS薄膜的2,2-二苯基-1-吡啶并肼基(DPPH)清除自由基的活性比对照CS薄膜高十倍。此外,HBA /M-β-CD的掺入使薄膜具有对各种食源性病原体的良好抗菌活性。总之,我们的结果表明,用M-β-CD包封是将HBA引入CS膜的有效方法。该膜可以用作食品保鲜的活性包装材料。光学测试表明,加入包合物可以改善紫外光的阻隔性能。加入0.1%HBA /M-β-CD后,薄膜的机械性能大大提高。HBA /M-β-CD-CS薄膜的2,2-二苯基-1-吡啶并肼基(DPPH)清除自由基的活性比对照CS薄膜高十倍。此外,HBA /M-β-CD的掺入使薄膜具有对各种食源性病原体的良好抗菌活性。总之,我们的结果表明,用M-β-CD包封是将HBA引入CS膜的有效方法。该膜可以用作食品保鲜的活性包装材料。HBA /M-β-CD-CS薄膜的2-二苯基-1-吡啶并肼基(DPPH)清除自由基活性比对照CS薄膜高十倍。此外,HBA /M-β-CD的掺入使薄膜具有对各种食源性病原体的良好抗菌活性。总之,我们的结果表明,用M-β-CD包封是将HBA引入CS膜的有效方法。该膜可以用作食品保鲜的活性包装材料。HBA /M-β-CD-CS薄膜的2-二苯基-1-吡啶并肼基(DPPH)清除自由基活性比对照CS薄膜高十倍。此外,HBA /M-β-CD的掺入使薄膜具有对各种食源性病原体的良好抗菌活性。总之,我们的结果表明,用M-β-CD包封是将HBA引入CS膜的有效方法。该膜可以用作食品保鲜的活性包装材料。我们的结果表明,用M-β-CD包封是将HBA引入CS膜的有效方法。该膜可以用作食品保鲜的活性包装材料。我们的结果表明,用M-β-CD包封是将HBA引入CS膜的有效方法。该膜可以用作食品保鲜的活性包装材料。
更新日期:2020-04-03
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