Luangapai Fakfan, Iwamoto Satoshi
Division of Science of Biological Resources, United Graduate School of Agricultural Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
Division of Science of Biological Resources, United Graduate School of Agricultural Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; Department of Applied Life Science, Faculty of Applied Biological Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
Int J Biol Macromol. 2023 Sep 30;249:126061. doi: 10.1016/j.ijbiomac.2023.126061. Epub 2023 Jul 29.
In this study, gelatin (GE) was composited with chitosan films (CH) and chitosan films incorporated with curcumin nanoemulsion (CH-CNE) through blending and layer-by-layer (LbL) assembly in order to overcome the physical limitations of the chitosan and its incorporated films. Furthermore, the distinctive effects of blending and LbL assembly on the physicochemical parameters of the composite films were assessed. The composite LbL films incorporated with GE exhibited improvement of water vapor barrier, tensile strength, solubility, which contributed to the enhanced antioxidant activity from the single components. By contrast, the composite films of the blending method exhibited greater elongation at break and increased swelling degree. Additionally, the films containing the nanoemulsion exhibited reduced light transmission and increased opacity. The thermal properties indicating the thermal stability and compatibility interactions of the composite films were examined by the glass transition temperature (T). Results revealed that the distinctive behavior of the T was affected by the compositing method. The LbL films exhibited substantially increased T, indicating enhanced thermal stability. The results indicated that the composited films formed via the LbL assembly attained better physicochemical properties and thermal stability, implying higher compatible film than the blending.
在本研究中，将明胶（GE）与壳聚糖膜（CH）以及掺入姜黄素纳米乳液的壳聚糖膜（CH-CNE）通过共混和层层（LbL）组装进行复合，以克服壳聚糖及其掺入膜的物理局限性。此外，评估了共混和LbL组装对复合膜物理化学参数的独特影响。掺入GE的复合LbL膜表现出水蒸气阻隔性、拉伸强度、溶解性的改善，这有助于增强单一组分的抗氧化活性。相比之下，共混法制备的复合膜表现出更大的断裂伸长率和增加的溶胀度。此外，含有纳米乳液的膜表现出透光率降低和不透明度增加。通过玻璃化转变温度（T）研究了表明复合膜热稳定性和相容性相互作用的热性能。结果表明，T的独特行为受复合方法的影响。LbL膜表现出显著提高的T，表明热稳定性增强。结果表明，通过LbL组装形成的复合膜具有更好的物理化学性能和热稳定性，这意味着比共混法具有更高的相容性膜。
