一种新型豆蛋白-普卢兰水凝的特征,该水凝有效地加载和释放盐:微观结构,分子动力学和质性质
Kexin Zhang1, Yanhong Liang1, Zhifeng Tan1
1SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034 China.
小蛋白分离物 (CPI) 和普鲁兰 (PUL) 水凝显示了减少盐的食物中 (Na+) 分布的增强特性. 最佳的2%的PUL添加改善了保持水分,凝强度和负载能力.
科学领域:
- 食品科学 食品科学 食品科学
- 材料科学 材料科学 材料科学
- 生物化学 生化学
背景情况:
- 制定有效的减少食物中的策略对于公共卫生至关重要.
- 水凝具有控制离子释放的潜力,有助于减少的风味感知.
- 小蛋白分离物 (CPI) 和pullulan (PUL) 是具有食品应用潜力的生物相容聚合物.
研究的目的:
- 研究CPI-PUL水凝的凝性质,结构特征和Na+负载能力.
- 评估这些水凝在减少盐的食品系统中增强Na+分布和释放的潜力.
- 为了确定最佳的PUL度以提高水凝性能.
主要方法:
- 豆蛋白分离物 (CPI) 和pullulan (PUL) 水凝的合成和表征.
- 评估水容量和凝强度.
- 分子对接分析以了解CPI-PUL相互作用.
- 使用冷场扫描电子显微镜 (CFSEM) 评估水凝网络的稳定性.
- 使用光逆向显微镜和能量分散光谱 (EDS) 确认盐负载.
主要成果:
- 2%PUL的CPI-PUL水凝具有最高的水容量 (70.78%) 和凝强度 (493.06g·mm).
- 分子对接揭示了通过结,疏水性相互作用和CPI和PUL之间的范德瓦尔斯力之间的相互作用.
- 聚乙烯的结合导致了更密集,更稳定的水凝网络,增强了热和机械性能.
- CFSEM证实,在2%的PUL含量下,网络稳定.
- 在CPI-PUL水凝中,盐的负载稳定.
结论:
- 对于食品应用,CPI-PUL水凝,特别是2%的PUL,具有有利的凝特性和结构完整性.
- 这些水凝显示出控制 (Na+) 分布和释放的巨大潜力,支持低盐食品的开发.
- 该研究强调了CPI和PUL在创建功能性水凝以改善食品配方方面的协同效应.
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