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可持续生物粘合剂的分子设计:酸作为大豆蛋白-pectin复合系统的结构和功能的关键调节剂
Ziyang Zhang1, Shengnan Wang2, Yunfei Yu1
1College of Food Science and Technology, Bohai University, Jinzhou 121013, China.
Food chemistry
|August 24, 2025
概括
这项研究开发了一种植物性粘合剂,使用大豆蛋白分离物和素,增强了酸. 在植物性肉类应用中,最佳的酸度为1.0%显著提高了粘合性能.
科学领域:
- 食品科学
- 材料科学
- 生物化学
背景情况:
- 开发有效的食品级粘合剂对于植物性肉类替代品至关重要.
- 豆蛋白分离物 (SPI) 和乳酸是粘合剂配方的有前途的生物聚合物.
- 酸 (CA) 可能会增强生物聚合物基粘合剂的性能.
研究的目的:
- 使用SPI,pectin和不同度的CA开发和描述一种新的植物性粘合剂.
- 研究CA对粘合剂的热稳定性和分子结构的影响.
- 确定最佳的CA度,以最大限度地提高植物性肉类粘合性能.
主要方法:
- 植物性粘合剂的配方,含有不同的CA度 (0-2%).
- 测量流量和粘弹性.
- 热分析 (例如DSC,TGA) 来评估热稳定性.
- 分析分子结构和相互作用的光谱技术 (例如FTIR,CD光谱).
- 显微镜 (例如,SEM) 来检查微观结构.
主要成果:
- 增加CA度提高了SPI-pectin粘合剂的热稳定性.
- CA改变了SPI和pectin的二次结构,影响了α-螺旋,β-转和β-片.
- 最佳的CA度 (重量%) 导致了广泛的结合和均的紧微观结构.
- 涉及氨酸和氨酸残留物的共价分子间相互作用促进了稳定的粘合网络.
结论:
- 酸显著提高了基于大豆蛋白分离剂的粘合剂的性能.
- 确定1.0重%的CA为优质粘合性质的最佳度.
- 这项研究为植物性食品工业设计先进的食品级粘合剂提供了宝贵的见解.
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