含互叶白千层精油的壳聚糖易剥离抗氧化膜的评价
Evaluation of easy-removing antioxidant films of chitosan with Melaleuca alternifolia essential oil.
作者信息
Cazón Patricia, Antoniewska Agata, Rutkowska Jaroslawa, Vázquez Manuel
机构信息
Laboratory for Environmental and Life Sciences, Nova Gorica University, Slovenia.
Institute of Human Nutrition Sciences, Faculty of Human Nutrition, Warsaw University of Life Sciences, Nowoursynowska st.159c, 02-776 Warsaw, Poland.
出版信息
Int J Biol Macromol. 2021 Sep 1;186:365-376. doi: 10.1016/j.ijbiomac.2021.07.035. Epub 2021 Jul 8.
Chitosan - tea tree essential oil (TTEO) films were obtained as a new biodegradable material. Malic acid or lactic acid solvents were evaluated to obtain easy-removing films. The microstructure by SEM and FT-IR, the thermal properties by TGA/DSC, the mechanical properties, the water vapor permeability, the antioxidant (DPPH and ABTS) activity and the optical properties of the formulated films were evaluated. A complete dissolution of the film in water was obtained. The elongation to break was higher in the films with malic acid (145.88-317.33%), comparing with those with lactic acid (25.54-44.08%). Chitosan film obtained in malic acid with TTEO showed the highest antioxidant activity. The colour and transparency of the samples did not suffer significant variations by TTEO addition. Films showed good UV-barrier properties, with a slightly improvement by TTEO addition. The films obtained showed a great potential for food packaging applications.
壳聚糖-茶树精油（TTEO）薄膜作为一种新型可生物降解材料被制备出来。对苹果酸或乳酸溶剂进行了评估，以获得易于脱模的薄膜。通过扫描电子显微镜（SEM）和傅里叶变换红外光谱（FT-IR）对微观结构进行了评估，通过热重分析（TGA）/差示扫描量热法（DSC）对热性能进行了评估，还评估了所制备薄膜的机械性能、水蒸气透过率、抗氧化（DPPH和ABTS）活性以及光学性能。薄膜在水中完全溶解。与含有乳酸的薄膜（25.54-44.08%）相比，含有苹果酸的薄膜的断裂伸长率更高（145.88-317.33%）。在苹果酸中制备的含有TTEO的壳聚糖薄膜表现出最高的抗氧化活性。添加TTEO后，样品的颜色和透明度没有显著变化。薄膜具有良好的紫外线阻隔性能，添加TTEO后略有改善。所制备的薄膜在食品包装应用中显示出巨大的潜力。
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