奇纳米晶作为天然凝修饰剂,以产生更强的酸诱导大豆蛋白隔离凝
Qin Zhang1, Ping Sun1, Zejian Xu1
1College of Food Science, Northeast Agricultural University, Harbin 150030, China.
Carbohydrate polymers
|November 8, 2023
概括
奇纳米晶显著提高了大豆蛋白隔离凝的特性. 添加这些天然纳米粒子增强了质学,热稳定性和凝网络结构,以获得更好的功能性食物.
科学领域:
- 食品科学与技术 食品科学与技术
- 材料科学 材料科学 材料科学
- 生物化学 生物化学
背景情况:
- 酸诱导大豆蛋白分离物 (SPI) 凝在功能性食品中广泛使用.
- 增强SPI凝的热学和热性质对于食品应用至关重要.
- 基纳米晶 (ChNCs) 是天然的纳米粒子,具有材料增强的潜力.
研究的目的:
- 为了提高酸诱导的SPI凝的风湿性质和热稳定性.
- 为了研究含有 ChNC 的 SPI 凝的凝机制.
- 探索自然来源的 ChNCs 的使用,以增强基于蛋白质的功能性食品.
主要方法:
- 在酸诱导的SPI凝中加入不同度的CNC.
- 风湿学测量 (G'值,恢复率) 以评估凝的特性.
- 里埃变换红外光谱法 (FTIR) 和循环二极化分析分子相互作用和二次结构变化.
- 颗粒大小分析和表面电荷测量.
主要成果:
- 增加CHNCs度 (0.00%至1.00%) 改善了G'值 (75.6Pa至1024.3Pa) 和恢复率 (80.27%至85.47%).
- 热稳定性增加,初始降解温度从261.5°C上升到275.8°C.
- ChNCs诱导了蛋白质展开,增加了β-sheet含量,并促进了有序聚合,形成了一个更密集的凝网络,具有更大的颗粒大小 (185.5nm到504.4nm).
- 证实了SPI和ChNC之间的静电和结合相互作用,疏水和静电力稳定了凝.
结论:
- 奇纳米晶有效地增强了酸诱导的SPI凝的热学和热性质.
- 纳入CHNC导致SPI凝网络的重大结构修改.
- 这项研究提出了一种实际的方法,用于利用自然衍生的CNC来改善基于蛋白质凝的功能性食品.
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