College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510641, China.
Int J Biol Macromol. 2021 Jun 1;180:385-391. doi: 10.1016/j.ijbiomac.2021.02.185. Epub 2021 Feb 27.
Active composite films were developed by incorporating different concentration of dihydromyricetin (DMY) into konjac glucomannan (KGM)/gellan gum (GG) matrix. Physicochemical, mechanical, released behaviour, antioxidant and antimicrobial properties of composite films were investigated. The results from the Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) indicated that DMY which well-dispersed in the KGM/GG matrix interacted with matrix through hydrogen bonds. The obtained films presented predominant thermostability, good water resistance property, excellent ultraviolet light barrier ability and sustained controlled release behaviour. In particular, the incorporation of DMY remarkably enhanced the antioxidant and antimicrobial activities of the films. Overall, the fabricated KGM/GG-DMY composite films have a promising application in the fields of food packaging.
活性复合膜是通过将不同浓度的二氢杨梅素（DMY）掺入魔芋葡甘聚糖（KGM）/结冷胶（GG）基质中制备的。研究了复合膜的物理化学性质、力学性能、释放行为、抗氧化和抗菌性能。傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）的结果表明，DMY 很好地分散在 KGM/GG 基质中，通过氢键与基质相互作用。所得薄膜表现出优异的热稳定性、良好的耐水性、出色的紫外线阻隔能力和持续的控制释放行为。特别是，DMY 的掺入显著提高了薄膜的抗氧化和抗菌活性。总的来说，所制备的 KGM/GG-DMY 复合膜在食品包装领域具有广阔的应用前景。
