中和的微观结构和物理特性 /凝混合可食涂料和薄膜
Yuanzheng Li1, Yungang Cao1, Tiantian Fan1
1School of Food Science and Engineering, Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi'an 710021, China.
International journal of biological macromolecules
|June 24, 2025
概括
这项研究开发了先进的食品包装膜,通过混合中和 (ANCUD) 和凝 (G). 最佳的 3:7 G/ANCUD比率显著改善了薄膜的性能,包括UV阻和机械强度.
科学领域:
- 材料科学 材料科学 材料科学
- 食品科学 食品科学 食品科学
- 聚合物科学 聚合物科学
背景情况:
- 基于凝 (G) 的薄膜为食品包装提供了潜力,但往往需要对产品进行增强.
- 中和 (ANCUD) 被探索为一种混合成分,以改善膜特性.
研究的目的:
- 开发混合涂层和包装薄膜,使用中和 (ANCUD) 和凝 (G).
- 研究不同ANCUD/G比对薄膜结构和功能的影响.
- 为了确定最佳的混合比,以提高薄膜的性能.
主要方法:
- 混合制备与不同的ANCUD/G比率.
- 同焦激光扫描显微镜 (CLSM) 用于兼容性评估.
- 流动性质的风学测量.
- 福里埃变换红外光谱 (FTIR) 和热重力测量分析 (TGA) 用于结构和热分析.
- 扫描电子显微镜 (SEM) 用于形态表征.
- 机械测试 (破裂时的延长) 和水溶性测定.
主要成果:
- 在混合系统中,ANCUD和G显示出良好的兼容性.
- 随着ANCUD含量增加,风病学特性显著改善.
- 3:7的G/ANCUD比率产生了出色的薄膜形成特性.
- 在G/ANCUD (3:7) 薄膜上显示了增强的紫外线阻,结晶性和热稳定性.
- 与G薄膜相比,G/ANCUD (3:7) 薄膜在断裂时的延长是3.33倍,水溶性低27.37%.
- 在G/ANCUD (3:7) 膜中,SEM揭示了一个紧密结合的纤维状交联结构.
- FTIR和TGA证实了G和ANCUD之间的强结合,ANCUD在凝中促进了β-sheet到α-helix过渡.
结论:
- G/ANCUD (3:7) 混合膜表现出优异的机械,热和紫外线阻断性能.
- 强烈的分子间相互作用 (键) 有助于增强膜的特性.
- 开发的G/ANCUD (3:7) 混合膜显示了作为功能性食品包装材料的重大前景.
相关概念视频
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According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or more types of...
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or more types of...
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Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...


